TREADSTONE LAW · ONTARIO · DIGITAL LEGAL SERVICES · EST. MMXXI ·TSL
Case Studies

Tax case studies

150 illustrative scenarios showing how tax problems unfold across Ontario — from the first phone call to the resolution. Every scenario is fictional; the situations are the kind we see all the time.

№ 1

The Rental Property Tax Return Their Corporation Never Knew It Owed

A Waterloo couple ran a single rental property through a small corporation for years without knowing it owed an annual federal filing. Three missed returns surfaced just in time to fix them before CRA noticed on its own.

WaterlooUnderused housing tax
№ 2

Four Years of Crypto Gains, One Letter That Complicated Coming Clean

Adaeze and Antonio owed roughly $448,000 in tax on unreported cryptocurrency gains going back four years. A prior CRA letter almost cost them the penalty relief a voluntary disclosure was supposed to provide.

TorontoVoluntary disclosures
№ 3

Gifting a Cottage on Purpose Still Meant Defending Its Value

A Kingston-area couple knew gifting their cottage to their son would trigger capital gains tax and planned for it carefully. The dispute that followed wasn't about whether tax was owed, but how much.

KingstonFamily transfers and attribution
№ 4

Cleaning Up a Shareholder Loan Before It Became Income

A Milton retailer had been drawing cash from his own corporation all year without paperwork. A year-end review caught it in time to fix — before the balance turned into a personal tax bill.

MiltonShareholder loans
№ 5

Windsor Electrician Fights a Shareholder Benefit Reassessment

A CRA business audit tried to tax an electrician personally on roughly $118,000 moved through his corporation. Tracing every dollar back to its business purpose reversed the assessment.

WindsorBusiness audits
№ 6

The HST Risk Hiding Inside a Hamilton Restaurant Purchase

Retired business owners agreed to buy a well-known Hamilton restaurant through a share purchase. A close look at the seller's HST filings turned up a projection-based audit risk worth hundreds of thousands of dollars — before it became their problem.

HamiltonHST audits
№ 7

The Deposit Analysis That Missed Two Sets of Loan Records

A Collingwood physician's locum shifts and a spouse's business loans looked, on paper, like three-quarters of a million dollars in hidden income. It wasn't, and bank statements alone couldn't tell the difference.

CollingwoodAudit defence craft
№ 8

Catching a Lopsided Price Allocation Before a Business Sale Closed

A retiring couple selling their St. Catharines machine shop nearly signed a purchase agreement that shifted six figures of value into the most heavily taxed column on the schedule.

St. CatharinesSelling a business — tax
№ 9

Saving Half a New Housing Rebate After an Early Move

A Peterborough couple's assigned GST/HST new housing rebate was clawed back after a job posting forced them out early. Occupancy evidence cut the CRA's demand down to roughly a third of what was first sought.

PeterboroughNew housing rebates
№ 10

Paying an Adult Child Dividends: A Brampton Family's CRA Review

A physiotherapist's corporation paid dividends to her adult son alongside her own salary-dividend mix. When the Canada Revenue Agency questioned four years of those dividends, the family had to prove which years his work actually earned them.

BramptonOwner pay: salary vs dividends
№ 11

Retired Engineers Fight a CRA Employee Reclassification

After decades as employees, Thalia and Mai retired into contract work — then a CRA audit decided they had never really stopped being employees at all, and billed them accordingly.

ScarboroughWorker status disputes
№ 12

Recharacterizing a $760,000 Loss From Capital to Business

A Sault Ste. Marie landlord reported a large property loss the cautious way. That caution cost him hundreds of thousands of dollars in deductions — until the true nature of the transaction was put back in front of the Canada Revenue Agency.

Sault Ste. MarieLosses and timing
№ 13

Rebuilding Three Years of Crypto Trades After a CRA Letter

An Oshawa couple learned that a CRA reassessment for unreported cryptocurrency gains does not wait for tidy records — it forces you to reconstruct years of trading history from whatever survives.

OshawaCrypto taxation
№ 14

Moving Home to Colombia Triggered a Tax Bill Nobody Expected

Carlos and Amrit left Scarborough for good, sure their modest savings meant a clean tax exit. A departure return filed without the right proof of when residency actually ended left them owing more than it should have.

ScarboroughLeaving Canada
№ 15

A Change of Plans Turned a Housing Rebate Into a Tax Bill

Camila and Gabriela bought a new condo meaning to live in it, then rented it out instead. The rebate credited at closing had to be repaid — but claiming the right one back limited the damage.

Richmond HillNew housing rebates
№ 16

A CRA Delay Nearly Cost This Couple Their Sale Proceeds

Before listing their Kenora rental property, a couple asked for a routine pre-sale tax review. It uncovered a $28,000 CRA balance swollen by years of interest that had built up while CRA itself sat on their objection.

KenoraPre-sale planning
№ 17

The Shareholder Loan That Almost Became Taxable Income

A warehouse worker who ran his own logistics corporation used a loan from the company to help buy a home in Burlington. When the paperwork did not match the rules, CRA moved to tax the whole amount.

BurlingtonHomes and tax
№ 18

The RRSP Fix That Cost a Bracebridge Couple Their Tax Loss

A routine year-end stock sale should have offset a large capital gain. A payroll error correcting a spouse's RRSP overcontribution quietly bought the same shares back, and the Canada Revenue Agency noticed before the couple did.

BracebridgeLosses and timing
№ 19

When a Silent Business Partner Left Two Directors Holding the Bill

A North York couple learned they were personally on the hook for hundreds of thousands in unremitted payroll deductions from a company they barely managed day to day — and had to prove, month by month, that they had done enough.

North YorkDirector liability for source deductions
№ 20

Purifying a Small Corporation Before Its Sarnia Share Sale

A rideshare driver and his co-owner had built a small transportation corporation over a decade. Selling the shares meant stripping out cash the company no longer needed to run its business, and that step drew a CRA reassessment.

SarniaPre-sale planning
№ 21

Renting Out the Family Home: The Election That Saved Six Figures

A North Bay couple rented their long-time home to their son and didn't realize the change triggered a tax bill on decades of growth — until a notice from the Canada Revenue Agency arrived.

North BayPrincipal residence issues
№ 22

The Tax They Reported Right, and the One Nobody Mentioned

Sana and Miriam did the hard part correctly — they reported their assignment sale profit as business income. The letter from the Canada Revenue Agency was about something else entirely.

PetawawaReal estate and CRA
№ 23

Pandemic Benefit Repayment Demand Cut From $12,800 to $4,100

A Chatham couple and their adult son each received CRA repayment letters tied to the same address. Sorting rental income from employment income reversed most of the claim.

ChathamPandemic benefit disputes
№ 24

Estate Wins Fight to Tax Crypto Gains as Capital, Not Business

When the Canada Revenue Agency reassessed a deceased technology executive's crypto trading as a business, his executor faced a tax bill that would have swallowed much of the estate. Here is how that reassessment was reversed.

GuelphCrypto taxation
№ 25

When Cash-Renting the Family Farm Broke the Rollover

An executor near Tillsonburg discovered that six years of renting out the home farm put its tax-free transfer to the next generation at serious risk — and only careful documentation limited the damage.

TillsonburgFarm rollovers
№ 26

Paying the Family Right: Salary, Dividends and a CRA Review

An electrician's corporation had been splitting income with his paramedic spouse for years on an accountant's old advice. A pre-emptive review caught the risk before CRA did, and the fix held up when the review actually came.

LindsayOwner pay: salary vs dividends
№ 27

Two Director Assessments, Two Different Statutes, One Outcome

A Burlington staffing corporation fell behind on payroll remittances and HST at the same time. The CRA assessed both directors personally under two different statutes — and treating the two assessments as one case would have cost them dearly.

BurlingtonAudit defence craft
№ 28

When a Bank-Deposit Review Turned Into a $91,000 HST Assessment

A Waterloo plumber who registered for HST a few months late faced a CRA reassessment treating years of revenue as tax owing. A closer look at the registration date cut the bill by nearly half.

WaterlooHST audits
№ 29

Winding Up a Forgotten Trust to Stop the Filings That Kept Coming

As executor of a small estate in Oakville, Rivka kept receiving notices about a trust nobody remembered using. Untangling it meant closing an inactive filing obligation before it grew into something worse.

OakvilleCompliance cleanup
№ 30

The Hidden Tax Bill Behind Adding a Child to a House Title

A London homeowner added her son to her house title to avoid probate. The move triggered a land transfer tax bill and a capital gains surprise nobody had warned her about.

LondonFamily transfers and attribution
№ 31

Two CRA Benefit Repayment Letters, Two Very Different Answers

A Hamilton couple got matching letters demanding repayment of pandemic income support. One claim didn't hold up. The other was real — and turned into a manageable plan instead of a lump-sum crisis.

HamiltonPandemic benefit disputes
№ 32

Contesting an $820,000 Worker Status Reassessment in Toronto

Two retired construction company owners faced a CRA audit that threatened to reclassify years of subcontractors as employees. A formal ruling request and careful evidence cut the exposure by more than 90 percent.

TorontoWorker status disputes
№ 33

A Kitchener Gig Worker's Costly Lesson From Tax Court

When the Canada Revenue Agency disallowed years of freelance deductions, a Kitchener IT support lead learned that a strong objection can shrink a tax bill — but sloppy records will always cost something.

KitchenerObjections and appeals
№ 34

Stolen Crypto, a Rushed Tax Claim, and What CRA Actually Allows

A Guelph corporation lost roughly $82,000 to a wallet hack and wrote the whole amount off as a business loss. The claim was wrong in a way that cost real money to fix.

GuelphLosses and timing
№ 35

Interest Relief After a Cancer Diagnosis Halted a Trucking Business

When a small corporation owner in Ottawa was sidelined by cancer treatment, his company's remittances stopped and interest piled up. A taxpayer relief request cut the damage — but could not undo all of it.

OttawaTaxpayer relief
№ 36

Settling a Mother's Unreported Rental Income From Abroad

Two brothers administering their mother's estate found years of Canadian rental income never reported to the CRA because she had been living overseas. Here is how they fixed it before distributing the estate.

GrimsbyNon-resident taxation
№ 37

A Landscaper's Undocumented Draws Trigger a CRA Reassessment

Raymond had been pulling money out of his landscaping corporation for two slow seasons with no paperwork behind it. When the Canada Revenue Agency reviewed the account, half the story was recoverable and half was not.

Fort ErieShareholder loans
№ 38

The Foreign Account Nobody Had Reported for a Decade

A routine accountant handover in Stoney Creek turned up an unreported overseas account. Acting before the CRA ever came calling changed the entire outcome.

Stoney CreekVoluntary disclosures
№ 39

An Innisfil Consultant Fought a CRA Reassessment Down to Half

Mateo's incorporated consulting business had its vehicle and home office claims disallowed after an audit. An objection built on real numbers, not arguments, got the reassessment cut roughly in half at the appeals stage.

InnisfilObjections and appeals
№ 40

Net Worth Assessment Unravelled by a Rental Property Paper Trail

A Cambridge family who kept careful records for their rental property still landed in a net worth audit that assumed their spending outpaced their reported income — until the paperwork told a fuller story.

CambridgeBusiness audits
№ 41

When a Renovation Isn't a Renovation: An Etobicoke Flip Reassessed

A corporation that bought, renovated and sold a bungalow within a year expected a capital gain. The Canada Revenue Agency saw a builder who owed HST on top of business income tax.

EtobicokeReal estate and CRA
№ 42

Three Years of Unreported Rental Income, Brought Current

Tuan and Quang never reported the rent from their basement suite. By the time they came to fix it, one of those years was no longer eligible for full relief — and the numbers had to work anyway.

MississaugaCompliance cleanup
№ 43

Two Countries, One Tax Bill: Winning a Residency Tie-Breaker

The Canada Revenue Agency said a Mississauga couple never really left. A tax treaty's tie-breaker rules, applied carefully to years of travel and paperwork, said otherwise.

MississaugaResidency questions
№ 44

Catching a Bookkeeper's Failure Before CRA Ever Did

A retired sales director in Oakville found nearly two years of unremitted corporate tax hiding behind a bookkeeper's silence — and got ahead of it before CRA opened a file.

OakvilleTaxpayer relief
№ 45

Director Assessed for the Company's Unpaid HST — Defence That Worked

When the Canada Revenue Agency came after a Pickering pharmacist personally for his failed corporation's unremitted HST, the defence turned on a due diligence standard most directors have never heard of.

PickeringAudit defence craft
№ 46

Splitting a Plumber's Final Tax Bill Between Two Returns

When a self-employed tradesman died mid-project, his estate faced one large terminal tax bill. Two carefully chosen elections turned it into a manageable, negotiated result for his widow and his brother.

CornwallTax on death
№ 47

Structuring an Earn-Out Before Signing a Practice Sale

A Brantford physiotherapist nearly signed an earn-out clause that would have taxed most of it as income instead of capital gains. A pre-signing review changed the result, though not entirely in her favour.

BrantfordSelling a business — tax
№ 48

Leaving Canada Late: A Dentist's Departure Tax Reckoning

When a surgeon's job offer abroad meant the whole family had to move within months, the corporation behind an Oshawa dental practice turned out to carry a tax bill nobody had planned for.

OshawaLeaving Canada
№ 49

One Late Interest Payment Nearly Cost a Family Its Income Split

A Stratford consultant used a spousal loan to shift investment income to his lower-earning wife. A missed January deadline let the CRA attribute years of income to him — negotiation saved most of it.

StratfordFamily transfers and attribution
№ 50

The Donation Tax Shelter Pembroke Consultant Walked Away From

A strong year for his consulting corporation left Ngozi looking for a way to soften the tax bill. A promoter's inflated-receipt donation program almost took the decision out of his hands.

PembrokeDonation schemes
№ 51

One Sibling Buys The Family Home, The Estate Faces A Tax Bill

An estate trustee in Kanata had to sell her late mother's house to one of her own brothers at a fair price, while the estate quietly owed far more capital gains tax than anyone expected.

KanataHomes and tax
№ 52

Structuring a Business Sale to Protect a $1.25 Million Exemption

A Huntsville construction company owner had a signed letter of intent and ten months to close. The buyer's preferred structure would have taxed the sale twice — our projections found the fix before the purchase agreement was drafted.

HuntsvillePre-sale planning
№ 53

Saving the Farm Exemption Before a London Land Sale

A century farm outside London had never been worked by the family who owned it, only rented out. When a developer's offer arrived, the cash lease threatened to erase a valuable tax exemption before the ink was dry.

LondonPre-sale planning
№ 54

Keeping the New Housing Rebate After Adding a Co-Signer

A brother pair buying their first home in Niagara Falls needed their father on title to qualify for a mortgage — and nearly lost thousands in HST rebate because of it.

Niagara FallsHomes and tax
№ 55

The Building Inside the Company Almost Cost Them the Exemption

Arjun and Ines were eight months from selling their Markham construction company when a routine pre-sale review found a passive asset problem that could have blocked both of their capital gains exemptions.

MarkhamSelling a business — tax
№ 56

Personally Assessed for a Company's Payroll Debt Years After Leaving

An investment advisor stepped back from his old consulting corporation and thought that was the end of it. Two years later, the CRA sent him a personal bill for the company's unremitted payroll deductions.

VaughanDirector liability for source deductions
№ 57

Rebuilding a Dead Man's Receipts to Save an HST Refund

When the Canada Revenue Agency audited a deceased millwright's small business and denied a wave of input tax credits for missing paperwork, his executor had to reconstruct two years of records from bank statements alone.

LondonHST audits
№ 58

Fixing a TFSA Overcontribution Before It Grew Worse

A landlord couple in Ottawa moved savings into a tax-free account without checking their room first. The excess kept accruing tax until they caught it — and acted.

OttawaRRSP/TFSA overcontributions
№ 59

A Landscaper's Second Lot and a Tax Bill Solved in Advance

A self-employed landscaper in Leamington owned a small parcel of unused land alongside his home. A short estate review found the tax his death would trigger — and a modest insurance policy was set up to pay it before it ever became a crisis.

LeamingtonTax on death
№ 60

A Late Separation Agreement Cost A Brampton Family In Tax

Biniam and Hanna split up without signing anything for over a year. When Biniam sold the condo he'd bought after moving out, the gap in paperwork turned into a real tax bill.

BramptonHomes and tax
№ 61

Selling A Brampton Rental With One Non-Resident Owner

When Raymond took a two-year posting abroad, he and Wilson decided it was finally time to sell their Brampton rental property — not realizing his new non-resident status would tie up part of the sale proceeds for months.

BramptonNon-resident taxation
№ 62

Catching a Family Trust Before the New Filing Rules Bit

Two sisters running a small family trust for their late father's rental property had no idea the rules had changed. A routine estate check-in caught the gap with weeks to spare.

TimminsTrust reporting rules
№ 63

Why an Executor in Milton Held Back $28,000 From an Estate

Mateo was named executor of his mother's estate and wanted to pay everyone out. One beneficiary wanted her share immediately. Here's why waiting for a clearance certificate mattered more than speed.

MiltonTax on death
№ 64

An Executor's Objection Reversed a Six-Figure Estate Reassessment

The CRA denied the principal residence exemption on a Caledon estate property, leaving the executor facing a large shortfall. A properly built objection turned the reassessment around at the appeals stage.

CaledonObjections and appeals
№ 65

Catching a Self-Employment Timing Error Before It Cost Their Benefits

A landlord couple in Aurora, running a home daycare on the side, nearly reported a December deposit the wrong way — a mistake that would have swung their reported income and put their child benefit and GST/HST credit at risk.

AuroraLosses and timing
№ 66

A $460,000 RRSP Transfer Error, and the Case for Full Relief

A Cobourg franchise owner's retirement transfer was miscoded as a fresh contribution instead of a rollover. The excess sat there for over a year before anyone caught it — and CRA cancelled almost all of the resulting tax.

CobourgRRSP/TFSA overcontributions
№ 67

Reassessed as a House Flipper After a Forced Relocation

A couple sold their Ajax home ten months after buying it when a job relocation came through. The Canada Revenue Agency treated the sale as a flip and taxed the whole gain as income.

AjaxPrincipal residence issues
№ 68

Retired Professor's Consulting Firm Avoided a Costly CRA Reassessment

A Barrie consultant's vehicle and home-office claims looked routine until a pre-filing review found the paper trail would not survive an audit. Fixing it before CRA ever asked kept a six-figure reassessment from happening at all.

BarrieBusiness audits
№ 69

A Consulting Contract That Didn't Match How the Work Was Done

A retired business owner's incorporated consulting practice looked independent on paper. The Canada Revenue Agency read the actual working relationship differently, and the reassessment reached deep into six figures.

MidlandCompliance cleanup
№ 70

Two Homes, One Exemption: A Separation-Era Tax Surprise

A retired farm worker sold the rural property she'd inherited years earlier, expecting the gain to be tax-free. A CRA review over her marriage and her ex-spouse's home in Mississauga said otherwise.

MississaugaPrincipal residence issues
№ 71

Missed Objection Deadline, Corporate Tax Bill Averted in Kingston

A construction consultant's corporation faced a reassessment of roughly $310,000 after the 90-day window to object had already closed. An extension request, filed in time, kept the door open.

KingstonAudit defence craft
№ 72

Three Pre-Construction Losses, Two Kinds of Deduction

Ji-ho and Arjun claimed a business loss on three pre-construction assignment sales gone wrong. The CRA said all three were investments, not a business. The real answer split down the middle.

OttawaReal estate and CRA
№ 73

The Rental Property That Was Never Fully His Father's

Sorting a Brantford estate, two co-executors found their late father had quietly held part of a property in trust for his brother for thirty years — and that the arrangement now had to be reported, or unwound, before it triggered a filing obligation neither of them knew existed.

BrantfordTrust reporting rules
№ 74

The Family Trust Nobody Told the Tax Filer About

A Markham couple held their daughter's home in a family trust for good reasons. Nobody realized the trust itself had a federal housing tax return due — until a routine check caught it in time.

MarkhamUnderused housing tax
№ 75

Payroll Remittances Fell Behind. One Year Was Already Too Late

A Welland dentist discovered nearly two years of unremitted payroll deductions buried in the practice's books. A voluntary disclosure fixed most of it — but the most recent period had already caught the CRA's attention.

WellandVoluntary disclosures
№ 76

Leaving Canada Without Selling Everything First

A Sault Ste. Marie surgeon and her partner faced a six-figure tax bill the moment they moved abroad — not because they sold anything, but because Canadian tax law assumed they had.

Sault Ste. MarieResidency questions
№ 77

Defending a Family Dividend Structure Against a TOSI Reassessment

A Newmarket surgeon paid dividends to her spouse and daughter from two family corporations. When the Canada Revenue Agency proposed taxing every dollar at the top rate, the paper trail she had kept made the difference.

NewmarketOwner pay: salary vs dividends
№ 78

Two Property Sales, One Consistent Story for the CRA

A retired physiotherapist and her husband had sold one property at a gain and lost money assigning a pre-construction unit. Filed the ordinary way, the mismatch would have invited exactly the kind of scrutiny the new property flipping rule was built to catch.

Thunder BayReal estate and CRA
№ 79

When Stolen Crypto Meets a Capital Loss Claim in Georgina

A retired construction company owner lost roughly $760,000 in cryptocurrency to a collapsed trading platform. The tax question was never whether the loss was real — it was when and how much of it the law would recognize.

GeorginaLosses and timing
№ 80

The Wrong Rebate on a New Fourplex Cost Them, Then Saved Them

A pharmacist and a construction project manager built a new rental fourplex in Orleans and claimed the rebate meant for homeowners. The unwind cost real money, but most of it came back the right way.

OrleansNew housing rebates
№ 81

Selling a Non-Resident's Property: Getting the Withholding Right

An executor sold her late father's Orillia rental property, facing a CRA rule that could have withheld a quarter of the price for months. A timely clearance certificate kept the estate's money moving instead.

OrilliaNon-resident taxation
№ 82

Rebuilding the Paper Trail: An HST Audit Reversed in Vaughan

A Vaughan bookkeeper and landscaper was told her HST input tax credits didn't count because her paperwork wasn't good enough. Rebuilding the records after the fact turned the assessment around.

VaughanHST audits
№ 83

The Corporate Filing Their Accountant Never Knew Existed

A retirement portfolio of Toronto rental units, held through a private corporation, sat outside a tax rule neither the university professor who owned it nor her accountant had ever heard of. Catching it before the returns came due avoided a six-figure penalty.

TorontoUnderused housing tax
№ 84

Selling a Family Home to an Heir Without a Tax Surprise

When an executor's sister wanted to buy their late mother's Belleville home instead of listing it, a hidden capital gains bill threatened to stall the whole estate until the sale itself was structured to pay for it.

BellevilleHomes and tax
№ 85

One Notice, Two Different Debts: A Director Assessment Untangled

A small staffing company fell behind on its remittances, and the Canada Revenue Agency assessed its director personally for both unpaid payroll deductions and HST. The two debts turned out to rest on different rules entirely.

St. CatharinesAudit defence craft
№ 86

Turning a Sudbury Crypto Reassessment From Business Back to Capital

A small corporation's cryptocurrency trading gains were reassessed as fully taxable business income. A close look at how the trading actually happened brought the file back to capital gains treatment.

SudburyCrypto taxation
№ 87

Five Years of Rental Income the CRA Found Before They Fixed It

Alejandro ran his nursing consulting corporation cleanly, but the rental condo he and Mateo owned personally never made it onto either of their tax returns. By the time they called, the CRA had already opened a file.

EtobicokeCompliance cleanup
№ 88

When a Fast Move Triggered the New Flipped-Property Tax Rule

A retired couple sold their Ancaster bungalow nine months after buying it to move Piotr closer to care. The Canada Revenue Agency's flipped-property rule turned their tax-free sale into a taxable one.

AncasterPrincipal residence issues
№ 89

The Brockville Flip: When a Loss Is Real, and When It Isn't Yet

A retired couple's holding company wrote off a property loss the year the market turned, then again the year it finally sold. The Canada Revenue Agency disagreed with both.

BrockvilleLosses and timing
№ 90

Beating a New Housing Rebate Clawback in North York

A North York couple who bought a new home while renting out their old one saw the Canada Revenue Agency try to claw back their GST/HST new housing rebate. Occupancy evidence turned the assessment around.

North YorkNew housing rebates
№ 91

Foreign Savings, Years of Silence: A Disclosure Made in Time

An air traffic controller in St. Thomas carried an unreported foreign account from her years working abroad. Coming forward before the Canada Revenue Agency came looking made all the difference.

St. ThomasVoluntary disclosures
№ 92

Renting Out the Family Home Without Triggering a Tax Bill

When Marcia's new job meant leaving Smiths Falls, she and Kajan planned to rent out the house rather than sell it - not realizing the switch alone could create a tax bill on a gain they hadn't actually collected.

Smiths FallsPrincipal residence issues
№ 93

Missing the Objection Deadline Didn't End This Tax Fight

Harpreet and Jing thought a missed 90-day window had closed the door on disputing a roughly $62,000 CRA reassessment of their rental property — until an overlooked extension option reopened it.

Thunder BayAudit defence craft
№ 94

Why an Estate Waited on a Clearance Certificate Before Paying Out

Two co-executors were ready to distribute their mother's estate to a waiting sibling — until the terminal tax return turned up a bill neither of them expected, and a decision about timing that protected them both.

KitchenerTax on death
№ 95

The Co-Signer Who Nearly Cost a $27,000 New Home Rebate

Anne needed her father on title to qualify for a mortgage on her new build. The Canada Revenue Agency read his name on the deed as a reason to claw back her housing rebate entirely.

Elliot LakeHomes and tax
№ 96

The Estate Tax Filing No One Told the Family About

An executor and her siblings assumed a federal tax on 'underused housing' was a rule for foreign investors. It caught their late father's Wasaga Beach property instead, and two years of missed returns turned into a penalty bill before anyone claimed the exemption they were entitled to.

Wasaga BeachUnderused housing tax
№ 97

Rebuilding Five Years of Crypto Records After a CRA Letter

Chantal retired from paramedic work and traded cryptocurrency across four exchanges for years without keeping records. When the CRA came asking, rebuilding the trail contained the damage — but it did not erase it.

Richmond HillCrypto taxation
№ 98

Loan Records That Turned a CRA Bank-Deposit Audit Around

A grocery clerk running a small weekend repair business was reassessed after the CRA treated family loan deposits as unreported income. Documentation, not argument, closed the file at zero.

Niagara FallsAudit defence craft
№ 99

Adding Her Son to the House Title Cost More Than She Expected

Cherise wanted her son on title so the Cambridge house would pass to him without probate. A well-meant transfer instead triggered a capital gain, and a lesson about what 'joint ownership' really means at tax time.

CambridgeFamily transfers and attribution
№ 100

When an Earn-Out Turns a Business Sale Into a Tax Dispute

A Peterborough retiree sold his multi-unit franchise business on an earn-out that was never structured for tax purposes. Two years later, the CRA disagreed with how the payments should be taxed.

PeterboroughSelling a business — tax
№ 101

Fighting a Pandemic Benefit Repayment Demand in Sudbury

Years after collecting emergency income support, a Sudbury couple were told to pay thousands back. A close look at the weeks in dispute cut what they owed and turned a lump-sum demand into a plan they could manage.

SudburyPandemic benefit disputes
№ 102

Splitting Investment Income the Right Way in Owen Sound

A self-employed tradesperson wanted his lower-earning spouse to hold their new investment account. A prescribed-rate spousal loan, set up properly, kept the income taxed in the right hands instead of being pulled back to him.

Owen SoundFamily transfers and attribution
№ 103

A Barrie Dental Practice's Wage Subsidy Bill, Cut by Documentation

A CRA audit demanded repayment of nearly every pandemic wage subsidy a Barrie dental practice had received. Careful record rebuilding reversed most of it — but not all.

BarriePandemic benefit disputes
№ 104

Contractor or Employee? A Hamilton Retiree's CRA Fight

After years of being paid as a self-employed contractor, a retired Hamilton cleaner asked the CRA to rule on her real working status — and recovered part of the pension and benefit contributions she had been missing.

HamiltonWorker status disputes
№ 105

Cleaning Up a Business Balance Sheet Before Any Buyer Appeared

A Parry Sound corporation had years of accumulated cash and a rental property sitting on its books, quietly threatening the tax exemption its owners would need on a future sale. Fixing it early made all the difference.

Parry SoundSelling a business — tax
№ 106

Documenting a Clean Break: Winning a Windsor Departure Tax Review

After retiring and moving abroad, a Windsor dentist and her spouse faced a residency challenge that threatened to tax the same income twice. Careful documentation from day one made the difference.

WindsorLeaving Canada
№ 107

Uncollected Invoices, a Reassessment, and One Estate in Whitby

When a self-employed landscaper died leaving unpaid invoices and two years of undeclared cash jobs, his executor learned that a terminal tax return has more moving parts than most people expect.

WhitbyTax on death
№ 108

Gifting the Family Cabin: Planning the Capital Gain in Advance

Hanna's father wanted to give her the family cabin instead of leaving it in his will. The gift itself was simple. Working out — and correctly reporting — the tax bill it triggered was not.

KitchenerFamily transfers and attribution
№ 109

The Bare Trust Nobody Knew They Had Created

A Woodstock couple added to their daughter's mortgage years earlier discovered, only after the rules changed, that the arrangement was a trust the Canada Revenue Agency now expected them to report.

WoodstockTrust reporting rules
№ 110

A Rented Farm, Two Leases, and One Costly Tax Surprise

When an executor near Waterloo went to sell his father's rented farmland, he learned that not all leases are equal in the eyes of the Income Tax Act — and that the difference had already cost the estate money before anyone noticed.

WaterlooPre-sale planning
№ 111

CRA Called It A Flip. The Paper Trail Said Otherwise

A retired nurse sold a Toronto property she had held for less than two years and received a reassessment treating the gain as fully taxable business income. The documents she had kept from day one told a different story.

TorontoReal estate and CRA
№ 112

Posting Security Instead of Paying Departure Tax in Full

A Kingston security contractor leaving Canada to care for a parent overseas faced an immediate tax bill on gains she hadn't realized. Electing to post security instead of paying up front kept her move affordable.

KingstonResidency questions
№ 113

How Proof of Resignation Erased a $41,000 CRA Assessment

A Milton landscaper who had stepped back from her incorporated business years earlier was personally billed for source deductions the company failed to remit after she left. The resignation paperwork made the difference.

MiltonDirector liability for source deductions
№ 114

Cancelling Interest After Illness Derailed a Small Windsor Corporation

A serious diagnosis pulled a Windsor couple away from their small consulting corporation's books for the better part of a year. When CRA's interest bill arrived, a taxpayer relief request told the whole story.

WindsorTaxpayer relief
№ 115

When a Consulting Contract Didn't Match the Work Being Done

A Hamilton consultant's corporation was reassessed as a personal services business after two years of work that looked, in practice, like employment. Fixing the contract came just in time to save one of the two years.

HamiltonCompliance cleanup
№ 116

Executor Fights a $12,000 Capital Gain on a Collingwood Cottage

When the Canada Revenue Agency reassessed her late father's final tax return over a cottage sale, an executor had to learn the objection and appeal process from scratch — and settle for a compromise instead of a clean win.

CollingwoodObjections and appeals
№ 117

Rental Withholding Tax Catches Up With a Non-Resident Owner

A couple who left Canada for a consulting contract abroad kept their St. Catharines rental and trusted a property manager to handle the tax side. The manager didn't, and the bill arrived years later.

St. CatharinesNon-resident taxation
№ 118

Negotiating Asset Allocation Before Signing a Business Sale

A Peterborough landlord selling her commercial rental corporation nearly accepted a purchase agreement that would have taxed most of the sale as ordinary income. Renegotiating the allocation clause changed the outcome.

PeterboroughSelling a business — tax
№ 119

Selling a Rental Property Without Nine Months of CRA Interest

A Brampton couple planned to sell their long-time rental property and let a large tax bill sit until filing season. A pre-sale review caught the instalment trap before closing day arrived.

BramptonPre-sale planning
№ 120

Bookkeeper Missed Two Filings. CRA Relief Cut the Bill in Half

A Scarborough gig worker was hit with thousands in penalties and interest after her bookkeeper quietly stopped filing. A taxpayer relief request didn't erase the debt, but it made the number survivable.

ScarboroughTaxpayer relief
№ 121

When Two Principal Residences Collide After a Separation

A Sault Ste. Marie couple sold two homes years after separating, each expecting the full tax-free exemption. A new relationship in between turned one clean sale into an overlapping claim CRA was bound to catch.

Sault Ste. MariePrincipal residence issues
№ 122

When a Trucking Corporation's Books Got Audited in Oshawa

A CRA audit alleged that a small trucking corporation had been quietly funding its owners' personal life. Untangling which dollars were whose took most of a year and ended in a negotiated middle ground.

OshawaBusiness audits
№ 123

How Real Records Overturned a CRA Net Worth Assessment

A Scarborough personal support worker's small corporation was reassessed after a CRA net worth audit assumed her bank deposits were hidden income. Bank records and receipts told a different story.

ScarboroughBusiness audits
№ 124

The Donation Receipt Was Five Times What They Paid

A Richmond Hill couple joined a leveraged giving program that promised an oversized charitable receipt for a modest cash outlay. Years later, the Canada Revenue Agency reassessed everything — and the fight came down to proving what they actually paid.

Richmond HillDonation schemes
№ 125

Four Years of Crypto Trades, One CRA Letter They Wanted to Avoid

A Kenora couple renewing their rental unit's mortgage realized four years of crypto trading gains had never been reported. Filing before CRA came looking made the difference between a bill and an investigation.

KenoraVoluntary disclosures
№ 126

Selling the Clinic: How Two Retiring Owners Kept Their Exemption

Andriy and Vivian built a physiotherapy clinic over three decades. Selling it the wrong way would have taxed the proceeds twice — selling it the right way used two lifetime exemptions instead of one.

BurlingtonPre-sale planning
№ 127

Beating a Director Liability Assessment Over Unremitted Payroll Tax

When a Bracebridge insurance adjuster's small corporation fell behind on payroll remittances, the Canada Revenue Agency came after him personally. A due diligence defence, built from paper he almost didn't keep, turned the assessment back.

BracebridgeDirector liability for source deductions
№ 128

Structuring a Shareholder Home Loan Without a Tax Bill

A consultant wanted her own corporation to lend her the money to buy a house. Done the wrong way, that loan becomes taxable income the moment it lands in her account.

North YorkHomes and tax
№ 129

When a Farm Rollover to the Kids Only Partly Qualified

A retired Sarnia-area farmer transferred his land to his two children to defer tax on the transfer. The Canada Revenue Agency later decided part of the property didn't count as farmland, and a reassessment followed.

SarniaFarm rollovers
№ 130

Cleaning Up a Pharmacy Corporation Before It Was Sold

A North Bay couple built up cash, investments and a rental property inside their pharmacy's corporation. Selling the business meant untangling all three before closing — and not everything could be untangled in time.

North BayPre-sale planning
№ 131

Trucking Expenses, Missing Receipts: A Petawawa Reassessment

A long-haul driver's employment expense claim triggered a five-figure reassessment. A Notice of Objection and a principled settlement at appeals cut the bill — but did not erase it.

PetawawaObjections and appeals
№ 132

A Chatham Estate's Tax Bill the Insurance No Longer Covered

Tesfay left a Chatham rental property directly to his daughter, triggering an immediate tax bill on his death. The insurance meant to pay it hadn't kept pace with the property's growth.

ChathamTax on death
№ 133

The HST Assessment That Named the Director, Not Just the Company

When a Guelph software company fell behind on HST remittances, the Canada Revenue Agency looked past the corporation and assessed its director personally. Careful preparation kept the assessment from standing.

GuelphAudit defence craft
№ 134

When Paying Your Spouse a Salary Draws CRA Scrutiny

A Tillsonburg landscaper built a salary-and-dividend mix to grow his RRSP room and pay his spouse for real evening bookkeeping work. A CRA review of the corporation's payroll turned that plan into a $32,000 argument over what "reasonable" pay actually means.

TillsonburgOwner pay: salary vs dividends
№ 135

Leaving Canada: Getting Ahead of the Departure Tax in Lindsay

A self-employed electrician planning a multi-year move abroad learned her incorporated business would be treated as sold the day she left Canada. Planning ahead turned a large, avoidable tax bill into a manageable one.

LindsayLeaving Canada
№ 136

Surviving a CRA Business Audit Over Vehicle and Home-Office Costs

A Burlington security staffing corporation faced a reassessment that would have added back tens of thousands in denied vehicle and home-office expenses. Rebuilt records turned the audit around.

BurlingtonBusiness audits
№ 137

Fixing a Deceased Mother's TFSA and RRSP Overcontributions

As executor of her mother's estate in Waterloo, Rania found years of quiet overcontribution errors sitting in two accounts — and a penalty tax clock that kept running even after death.

WaterlooRRSP/TFSA overcontributions
№ 138

When a Sales Projection Assumed a Restaurant No One Was Running

Anh and Tuan rented out a vacant storefront to themselves for a few slow months and filed HST on what the till actually took in. The CRA's audit assumed a full restaurant instead, and the gap became a dispute worth fighting.

OakvilleHST audits
№ 139

When a Mortgage Broker's Advice Collided With Rental Loss Timing

A London couple smoothed their self-employment numbers to satisfy a lender's income test, then found the same numbers didn't match what the tax rules required for their rental losses.

LondonLosses and timing
№ 140

Splitting a Home and a Rental Property Without a Tax Surprise

A Hamilton couple separating after years of co-owning a house and a rental unit learned that timing their principal residence designation around the separation date could save them tens of thousands in capital gains tax.

HamiltonHomes and tax
№ 141

When a Side Hustle Triggers a $92,000 CRA Reassessment

A Toronto teacher who drove rideshare and tutored on weekends kept her gig income in her head, not a ledger. The CRA reassessed three years at once, and good records after the fact could only go so far to undo the gaps.

TorontoObjections and appeals
№ 142

The Registration Date That Was Off by a Year

A Kitchener contract administrative assistant was assessed roughly $48,000 in unremitted HST after the CRA assumed she should have registered the moment she started freelancing. The rolling revenue test said otherwise.

KitchenerHST audits
№ 143

A Guelph Clinic's Contractors Were Ruled Employees After All

Heather built her physiotherapy clinic around independent contractors who set their own hours. A payroll audit disagreed, and the retroactive CPP and EI bill reached into six figures before it was brought under control.

GuelphWorker status disputes
№ 144

Ottawa Couple Beat a CRA Flipping Reassessment They Didn't Owe

Hyun-woo and Nikhil had already reported their condo assignment profit correctly. A CRA matching letter still proposed nearly $20,000 in extra tax — until their own closing paperwork proved the number wrong.

OttawaReal estate and CRA
№ 145

Payroll Remittances Fell Behind for Years. A Disclosure Fixed It.

A Grimsby engineering consultant fell three years behind on payroll source deductions during a cash crunch. Coming forward first, before CRA came looking, changed how the debt was resolved.

GrimsbyVoluntary disclosures
№ 146

Catching Up a Family Trust Before CRA Came Looking

A Fort Erie couple's discretionary family trust had never filed a trust return. New disclosure rules made that silence risky — here is how it was fixed before it became a problem.

Fort ErieTrust reporting rules
№ 147

When a Shareholder Loan Account Grows Faster Than It Shrinks

A Stoney Creek couple cleared most of their corporation's shareholder loan balance in time, but two draws slipped past the deadline and turned into a six-figure income dispute with the CRA.

Stoney CreekShareholder loans
№ 148

How Loan Paperwork Cut an Estate's CRA Tax Bill in Half

When CRA moved to tax a deceased shareholder's unrepaid company loan as income on her final return, her son had to prove years-old paperwork still counted as a genuine loan.

InnisfilShareholder loans
№ 149

A Payroll Glitch Nearly Cost a Cambridge Family Their RRSP

A duplicate payroll deduction quietly overfunded a paramedic's RRSP for more than two years. Fixing it meant untangling the error at its source before the tax on the excess kept compounding.

CambridgeLosses and timing
№ 150

Retired to Portugal, Reassessed by CRA: Winning a Residency Fight

A retired investment advisor and his surgeon wife kept their Etobicoke house while building a new life abroad. CRA decided they were still Canadian residents on paper — and taxed their worldwide income to prove it.

EtobicokeResidency questions
The case studies in this section are entirely fictional. They do not describe any real client, file, or matter handled by Treadstone Law, and they are not real files with details changed. All names, people, properties, businesses, dollar amounts, dates, and events are invented, and any resemblance to a real person, business, or situation is coincidental. Fictional scenarios like these illustrate the kinds of legal issues people in Ontario commonly face and how a lawyer can help. They are general information, not legal advice — no two matters unfold the same way, and nothing here predicts the outcome of any real case. Reading a case study does not create a lawyer-client relationship. If you are facing something similar, speak with a lawyer about your specific circumstances.

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