A practical, tick-the-box guide to the tax side of owning, selling, and passing on a second property.
Who this is for: Anyone who owns — or is about to own — a cottage, second home, or investment property in addition to their main residence. What you'll get: A checklist of the tax issues to think through, from capital gains on a sale to keeping the family cottage in the family.
⚖️ 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.
A note before you start: Treadstone Law is a law firm, not your accountant. The rules below involve figures and rates that change, and the right move depends on your numbers. Treat this as a planning checklist, then confirm your tax positions with a tax professional and the CRA.
Why a second property is a tax issue, not just a lifestyle one
Your principal residence can usually be sold tax-free thanks to the principal residence exemption (PRE). A second property generally can't — at least not automatically. When you sell, give away, or die owning it, the Canada Revenue Agency (CRA) may treat the growth in its value as a capital gain that gets taxed.
The good news: most of the pain is avoidable or reducible with planning while you own the property, not in a panic at the end. Work through the checklist below.
1. Understand the capital gain on a sale
- I understand that selling a second property can trigger a capital gain (the increase in value since I acquired it).
- I know a portion of that gain — the inclusion rate — is added to my taxable income.
- I understand the principal residence exemption can shelter a home's gain, but generally only one property per family per year can be designated as the principal residence.
- Why it matters: A "family unit" (you, your spouse or common-law partner, and minor children) gets one designation per year. You can't shelter both your house and your cottage for the same years.
- I've noted that a property must generally be "ordinarily inhabited" in the year to qualify for the exemption — a pure rental property usually won't.
⚠️ Watch out: The inclusion rate is set by tax law and can change. Confirm the current inclusion rate with the CRA before you estimate the tax on a sale.
2. Decide which property to designate
If you own two properties that both qualify (say, a house and a cottage you both use), you may get to choose which one to designate as your principal residence for each year of ownership — and the math isn't always obvious.
- I've considered which property has grown more in value per year of ownership.
- I understand that designating the cottage for some years means not sheltering the house for those same years.
- I plan to run the numbers (ideally with my accountant) before selling either one.
- I know the designation is generally made on my tax return in the year a property is sold, not years in advance.
Tip: The property that gained the most per year is often the better one to shelter — but only a year-by-year calculation tells you for sure. This is a classic "get advice before you sign" moment.
3. Keep adjusted-cost-base records (this saves real money)
Your adjusted cost base (ACB) is your tax cost in the property. The higher your ACB, the smaller your taxable gain. Many people overpay tax simply because they didn't keep receipts.
- I've recorded the original purchase price and closing costs (legal fees, land transfer tax).
- I'm keeping receipts for capital improvements — additions and upgrades that increase value or extend the property's life (a new roof, an addition, a dock, a new septic system).
- Why it matters: Capital improvements add to your ACB and shrink your eventual gain. Routine repairs and maintenance generally don't — but the line between them matters, so keep everything.
- I keep these records in one place that my family or estate trustee could find.
- I understand I may need these documents decades from now, so I'm not throwing them out.
Reminder: No receipt, no proof. Reconstructing 20 years of cottage improvements after the fact is painful and often costs you tax. Start a folder today.
4. Plan for the deemed disposition on death
When you die, the tax rules generally treat you as having sold your property at its fair market value immediately before death — a deemed disposition. The resulting capital gain is reported on the deceased's final ("terminal") return. There's no actual sale and no cash, but there can be a real tax bill.
- I understand my second property could trigger a capital gain on my death.
- I know a transfer to a surviving spouse or common-law partner can usually defer this (a "spousal rollover") until they sell or die.
- I've thought about where the cash will come from to pay the tax if the property passes to children instead of a spouse.
- Why it matters: A beloved cottage can force a sale if the estate can't fund the tax bill. Families sometimes use life insurance to cover it.
- My will and estate plan account for this property and the tax it may trigger.
⚠️ The deemed-disposition rule is the single biggest reason family cottages get sold against everyone's wishes. Plan for the tax before it's an emergency.
5. Think through succession of the family cottage
Keeping the cottage in the family across generations takes intention. The options each have trade-offs.
- I've identified who actually wants the property (not everyone does — and forcing it can cause conflict).
- I've considered how to handle fairness among children if only some want the cottage.
- I understand that simply leaving it "to the kids jointly" can create future disputes over costs, use, and selling.
- I've looked into a co-ownership agreement to set rules for sharing costs and use.
- I've considered whether a trust fits my goals (see section 7).
Tip: The legal and tax structure is only half of it — the family conversation is the other half. The smoothest successions start with a frank talk about who wants what.
6. Understand gifting to children (it's a deemed sale)
Many people assume giving a property to their children is tax-free. It usually isn't.
- I understand that gifting a property to a child is generally treated as a deemed disposition at fair market value — as if I sold it at market price — so I may owe tax on the gain even though I received nothing.
- I know the child's cost base generally becomes that fair market value, which affects their future tax.
- I understand a sale to a child at a bargain price can create a double-tax trap (taxed on full FMV for me, but the child's cost base may not reflect what they paid).
- I've considered the loss of control and exposure to a child's creditors or divorce once the property is in their name.
⚠️ Watch out: "I'll just put the kids on title" is one of the costliest casual decisions in tax. It can trigger tax now, expose the property to a child's marriage breakdown or creditors, and complicate the principal residence exemption. Get advice first. (See our related guides on estate planning and the family cottage.)
7. Weigh a trust or joint ownership
Two common structures — each with real pros and cons.
Putting the property in a trust
- Pro: Can set rules for use, keep the property out of a future estate's probate process, and centralize decisions.
- Pro: Can help manage succession across generations.
- Con: Trusts have their own tax rules, filing obligations, and a periodic deemed disposition — under the 21-year rule, most trusts are treated as having sold their capital property at fair market value every 21 years (confirm how this applies to your trust with the CRA or your accountant).
- Con: Setup and ongoing administration cost money.
Adding a child as a joint owner
- Pro: The property can pass to the surviving owner outside the estate.
- Con: Adding a child to title can itself be a partial deemed disposition (a transfer of part of the property at FMV) — triggering tax now.
- Con: The property becomes exposed to that child's creditors, lawsuits, or divorce, and courts sometimes question whether a "gift" was truly intended.
Neither structure is automatically "the smart move." The right answer depends entirely on your family, your numbers, and your goals — and the tax rules around trusts change. Confirm the current treatment with the CRA and get tailored advice.
8. Don't forget non-resident and rental considerations
- If I rent out the property, I'm reporting the rental income and keeping expense records.
- I understand that claiming depreciation (Capital Cost Allowance) on a rental can create recapture (extra income) when I sell — so I'm getting advice before claiming it.
- If I (or a co-owner) am or become a non-resident of Canada, I understand special withholding and reporting rules apply to rental income and to any sale.
- I've checked whether annual filings like the federal Underused Housing Tax could apply to my ownership — the UHT was eliminated for the 2025 and later calendar years, but returns (and penalties for not filing) can still apply for 2022 to 2024, even where no tax was owed. Confirm with the CRA.
- If a foreign buyer is involved in a purchase, I've checked Ontario's Non-Resident Speculation Tax.
⚠️ Cross-border ownership multiplies the rules. If any owner lives outside Canada, get advice before renting or selling — the withholding and filing obligations are strict and easy to miss.
What's next
- Start (or update) your ACB folder today — purchase docs plus every capital improvement receipt.
- Run a rough gain estimate with your accountant so there are no surprises.
- Have the family conversation about who wants the cottage.
- Review your will and estate plan so the tax on this property is funded and the property goes where you intend.
- Before any sale, gift, or transfer to family, get legal and tax advice first — this is where the costly mistakes happen.
Bottom line: A second property is a wonderful thing and a real tax planning project. The owners who plan early — records, designation strategy, succession, and funding the eventual tax — keep far more of its value in the family.
How Treadstone Law can help
A cottage or investment property sits at the crossroads of real estate, estate planning, and tax. Treadstone Law can help you structure ownership, prepare or update the legal documents (wills, co-ownership agreements, transfers), and coordinate with your accountant so the tax side is handled — not discovered too late.
- Flat, transparent fees — know the cost up front.
- Fully online intake — start from anywhere in Ontario.
- Talk to a person — call 1-844-900-1070.
Learn more on our Tax page, see Pricing, or Start a File Online.
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.