What you can deduct against rental income — and the traps that turn a deduction into a tax bill.
Who this is for & what you'll get. This is for Ontario landlords — from one basement unit to a portfolio — who want a clear list of what can be deducted against rental income, plus the warnings that catch people out. Tick each box you can support with a receipt. Done right, deductions turn a frightening rental tax bill into a fair one; done carelessly, a deduction (especially depreciation) can create tax later.
⚖️ This is a general guide, not legal advice. It can't account for your specific situation. Use it to get oriented, then confirm the details with a licensed Ontario lawyer.
🧾 Important: Treadstone Law is your lawyer, not your accountant. Rental deductions are a tax matter under the federal Income Tax Act, reported on your return to the Canada Revenue Agency (CRA). We can help with leases, ownership structure, and property law — but what's deductible, and how, should be confirmed with a tax professional and the CRA. Verify every rule here as of the date you file.
How to use this checklist
Rent you receive is taxable income, reported on the standard rental form (commonly Form T776 — verify the current form with the CRA). Against that rent, you can deduct reasonable expenses incurred to earn it. The whole game is:
- Earn rent → it's income.
- Deduct eligible expenses → they reduce the taxable amount.
- Keep every receipt → no receipt, no deduction if reviewed.
Two ideas decide almost everything below and deserve a flag up front:
- Current expense vs. capital improvement — a current expense is generally deducted this year; a capital improvement is deducted over time (and may involve Capital Cost Allowance). Getting this wrong is the most common rental tax mistake.
- Personal-use portion — if part of the property is personal, or you rent only part of the year, you generally deduct only the rental share.
🧾 Golden rule: keep all receipts, invoices, and statements — paper or digital — for every line you claim. Organize them by property and by year as you go, not in a panic at tax time.
Section 1 — Operating expenses you can generally deduct
These are typical current expenses incurred to earn rent. Tick the ones you pay.
- Mortgage interest — not the principal. You can deduct the interest portion of your mortgage payments, but not the part that repays the loan (principal).
- Why it matters: This trips up nearly every new landlord. Your bank's annual statement splits interest from principal — deduct the interest only.
- Property tax (municipal property taxes on the rental).
- Insurance (the rental property's insurance premiums).
- Utilities you pay — heat, hydro, water, gas — to the extent the landlord pays them. If the tenant pays a utility directly, you can't deduct it.
- Repairs and maintenance — fixing what's there to keep it in working order (a leaky tap, a furnace repair, repainting after a tenant). See the current-vs-capital warning below.
- Property management / superintendent fees.
- Advertising — listing the unit, signage, online ads.
- Condo / common-element fees (for a rented condo unit).
- Accounting and legal fees related to the rental — e.g., bookkeeping for the rental, or legal costs to prepare a lease or pursue rent. (Legal fees to buy the property are usually capital — they go into the cost base, not this year's deductions.)
- Office and supplies reasonably tied to running the rental.
- Travel to collect rent, supervise repairs, or manage the property — within the CRA's rules. This is an area the CRA scrutinizes; keep a log and be reasonable.
- Salaries / wages paid to others for services on the property (e.g., a person you pay to clean or do repairs).
⚠️ Reasonable and incurred-to-earn-rent. Every deduction must be a genuine expense of earning the rent and must be reasonable. Lavish or personal costs dressed up as rental expenses invite trouble. When in doubt, ask your accountant.
Section 2 — The big distinction: current expense vs. capital improvement
This one decision changes how you deduct — and getting it wrong is the classic audit flag.
- Decide whether each cost is a current expense or a capital improvement.
- A current expense generally restores the property to its original condition — a repair. It's usually deductible in the year you incur it.
- A capital improvement generally betters the property, makes it last longer, or adds something new — a renovation, an addition, replacing something with a materially better version. It's added to the property's cost and deducted over time, typically through Capital Cost Allowance (CCA).
| Question to ask | Points toward |
|---|---|
| Does it just fix or maintain what was already there? | Current expense (deduct now) |
| Does it improve the property beyond its original condition, or add something new? | Capital improvement (capitalize / CCA) |
| Will the benefit last many years? | Capital improvement |
| Is it a recurring upkeep cost? | Current expense |
💡 Example. Repainting a wall after a tenant leaves is usually a current repair. Gutting and rebuilding the kitchen with higher-end finishes is usually a capital improvement. The line isn't always obvious — borderline jobs (like replacing all the windows) are exactly where you want your accountant's read.
Section 3 — Capital Cost Allowance (CCA): handle with care
CCA lets you deduct part of the cost of capital property (like the building) over time as a form of depreciation. It can lower this year's rental income — but it comes with serious strings.
- Understand that CCA is optional, and often best left alone. Many landlords are advised not to claim CCA on the building. Here's why:
- ⚠️ Recapture on sale. If you claim CCA over the years and later sell for more than the depreciated value, the CRA can "recapture" the deductions — adding them back to your income in the year of sale. The deduction you enjoyed earlier can come roaring back as a tax bill later.
- ⚠️ It can affect the principal residence exemption. If the property is (or becomes) your home, claiming CCA can disqualify you from treating a change in use favourably and can undermine the principal residence exemption. This matters a lot if you might move into the property or rent out part of your own home.
- ⚠️ CCA generally can't create or increase a rental loss. You usually can't use CCA to push your rental income below zero. So it doesn't help in a year you're already at a loss.
🧭 Bottom line on CCA: it is a timing tool with a long tail. Don't claim it reflexively to shave a bit off this year's tax — model what it does to your eventual sale and to any principal residence claim first, with your accountant.
Section 4 — Personal use and partial rentals
If the property isn't 100% rental, 100% of the year, your deductions are prorated.
- Renting part of your home (e.g., a basement unit)? Deduct only the portion of shared costs (mortgage interest, property tax, utilities, insurance) reasonably attributable to the rented space — often by square footage or number of rooms. Keep your method consistent and documented.
- Renting only part of the year (e.g., a seasonal cottage)? Deduct only the expenses tied to the rental period; personal-use periods don't qualify.
- Renting to family below market rent? Special rules can limit or deny losses where you aren't charging a commercial rent. Confirm with your accountant.
- Document your split. Note the basis for your percentage (square footage, days rented) so you can explain it if asked.
Section 5 — Reporting and records
- Report all rental income — every dollar of rent, including from family or short-term guests.
- File the rental schedule for each property (commonly Form T776 — verify the current form). Co-owners generally report their share.
- Report gross rent and your expenses so the form shows your net rental income (or loss).
- Keep all receipts and statements behind every claim — mortgage statements (showing interest vs. principal), property tax bills, insurance, utility bills, repair invoices, management fees, advertising, condo statements, and professional fees.
- Keep records for years after you sell — the CRA can review well after the fact, and your cost records also feed any future capital gains calculation.
- Track capital improvements separately — they don't just reduce income now; they raise your cost base for when you eventually sell.
📦 Scenario. You rent out the basement of your Mississauga home. You deduct the basement's share of mortgage interest, property tax, hydro, and insurance (by square footage), plus the full cost of repairs to the basement unit. You decide not to claim CCA — because you don't want to jeopardize the principal residence exemption on your own home. Your accountant confirms the split. That's the pattern this checklist is built to support.
Mini-FAQ
Can I deduct my whole mortgage payment? No — only the interest portion. The principal repayment is not deductible. Your lender's annual statement separates the two.
Should I claim CCA to lower my tax this year? Maybe not. CCA can trigger recapture when you sell and can harm a principal residence claim. Treat it as a strategic decision to make with your accountant, not a default.
Is a renovation deductible this year? A genuine repair usually is; a capital improvement usually isn't — it's capitalized and deducted over time. Borderline jobs need a professional read.
Do I report rent from a family member? Yes, all rent is reportable. And if you charge below-market rent, special rules may limit your losses. Confirm with the CRA.
What's next
Tick every box you can back with a receipt, keep your documents organized by property and year, and bring the two big judgment calls — current vs. capital and whether to claim CCA — to your accountant before you file. Those two decisions affect not just this year's tax but what you'll owe when you eventually sell.
How Treadstone Law can help
Treadstone Law is a digital-first Ontario law firm built for clear pricing and online convenience. We help landlords with leases, purchases, ownership structure, and the property-law side of being a landlord in Ontario — and we'll tell you plainly when a deduction question belongs with your accountant.
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This is not legal advice
This guide is general information, not legal advice. Reading it does not create a lawyer-client relationship. Ontario laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a licensed Ontario lawyer. Treadstone Law is licensed by the Law Society of Ontario — reach us at 1-844-900-1070 or start a file online.