The expense section is where a T776 is won or lost. It's the biggest part of the form, and the place landlords both overpay — by missing deductions — and get audited, by claiming the wrong ones. Getting rental property tax deductions in Ontario right comes down to fewer moving parts than it looks.
Most of the confusion traces back to two questions the CRA cares about far more than the dollar amount: was it a repair or an improvement, and did you use the money for the rental? Get those two right and the rest is a checklist. Get them wrong and you either leave money on the table or invite a reassessment.
This deep-dive walks every T776 expense line, the current-vs-capital rule that governs all of them, the mortgage and timing rules that trip people up, the personal-use split for a basement suite, and the list of things you can never deduct. It's general information, not tax advice — take your own numbers to a CPA and verify the details with the CRA.
The T776 Deduction Checklist & Cheat-Sheet
Every deductible line, the current-vs-capital rule, and what you can never claim — on one page.
Get Free PDF →The One Rule That Governs Everything: Current vs Capital
Before you sort a single receipt, understand the distinction the whole form turns on. A current expense is recurring and restores the property to its original condition — you deduct it in full the year you pay it. A capital expense provides a lasting benefit, improves the property beyond its original condition, or extends its useful life — it's added to the asset and deducted gradually over time through Capital Cost Allowance.
In practice the test is intuitive once you see it. Fixing the old furnace is a repair (current); replacing it with a new one is capital. A leaky faucet, broken window glass, and repainting are current; a new roof, a kitchen renovation, or adding a deck are capital. There's one trap worth flagging early — the "used property" rule: repairs to put a newly bought property into suitable condition for use can be treated as capital even if the same work would normally be current, which is why large repair claims right after a purchase often get reclassified. This one call decides whether you deduct $15,000 this year or a few hundred dollars a year through CCA, and it's the single area the CRA reclassifies most. (Helpfully, the repairs the RTA requires you to make are generally the current expenses you can deduct now.)
Every Expense Line, Explained
Here's the deductible side of the T776, line by line — the reference worth bookmarking.
You can deduct advertising to find tenants; insurance premiums for the current year (a prepaid multi-year policy is prorated to the current-year portion); interest and bank charges, meaning mortgage interest and loan/bank fees but not principal; professional fees for legal work on leases or rent collection and for accounting and bookkeeping — though legal fees to buy the property are capital, added to its cost; management and administration fees; repairs and maintenance that are current expenses; salaries and wages paid to others for services (including a tenant who, say, plows the lot in exchange for reduced rent, recorded at fair market value) — but never the value of your own labour; property taxes; travel and motor-vehicle costs for the business-use portion, where a log matters because these draw scrutiny; utilities when the lease makes you responsible; and other costs like condo fees (your share of common upkeep), landscaping, and office supplies — though a filing cabinet or desk is a capital item, not an office-supply expense.
Mechanically, the numbers flow down the form: gross rents on line 8299, minus total expenses on line 9369, minus CCA on line 9936, equals your net rental income or loss on line 9946, which carries to line 12600 of your T1 return. Report on the accrual basis — rent counts when it's earned, not when the cash lands. And a useful asymmetry: ordinary operating expenses can create a rental loss that offsets your other income, whereas CCA can't.
The Mortgage & Timing Rules
Two areas cause more errors than all the others combined: how the mortgage is treated, and when a cost gets deducted.
On the mortgage, the rule is simple to state and constantly broken: only the interest is deductible; the principal never is. Your principal repayment shrinks your loan balance — it isn't an expense of earning income — so check your mortgage statement for the interest/principal split rather than deducting the whole payment. Layered on top is the use-of-funds rule, which catches people after a refinance: interest is deductible based on what the borrowed money was used for, not what secures the loan. If you refinance your rental to fund a personal purchase — a down payment on your own home, for instance — that additional interest isn't deductible, because the funds went to personal use. Mixed-use loans have to be apportioned, and we go deeper on this in the refinancing guide.
On timing, several costs can't be deducted all at once. Prepaid insurance is deducted only for the current-year slice. Financing fees to get the mortgage — application, appraisal, and legal fees for the loan itself — are deducted over five years at 20% a year, regardless of the loan's term (though if you repay the loan early, you can deduct the remainder then). A lump-sum fee to buy down your interest rate, or a penalty to pay off the mortgage early, is prorated over the remaining term of the loan. And a payment to a tenant to cancel a lease is prorated over the days remaining on that lease — in the CRA's own example, a landlord who pays $1,000 to end a lease with 500 days left, 135 of them falling in the current year, deducts just $270 this year.
Personal Use, and What You Can Never Deduct
If you live in part of the property, you can't deduct all of it. You deduct 100% of the expenses that relate only to the rented area — advertising the suite, repairs inside it — plus a reasonable share of whole-building costs like property tax, insurance, mortgage interest, and utilities, based on rooms or square footage. An 800-square-foot basement suite in a 2,000-square-foot home works out to 40% of those shared costs. On the form, you enter the full amount under "Total expenses" and the non-deductible slice under "Personal portion." Claiming 100% of shared costs while living in the property is one of the most reliable ways to trigger an audit. (A related caution: claiming CCA on the rented portion of your home can jeopardize your Principal Residence Exemption — see the CCA guide.)
Finally, four things never qualify, no matter how you file them. Mortgage principal — you're repaying a loan, not incurring an expense. The value of your own labour — a Saturday spent painting is worth nothing to the CRA, though the paint itself may be claimable. Land transfer tax — it's added to the property's adjusted cost base and matters when you sell, not on the T776. And fines and penalties — parking tickets at the property, municipal bylaw fines, mortgage late fees, and CRA penalties are all non-deductible. A few housekeeping rules round it out: co-owners each report their share consistently (mismatched co-owner returns invite review), you keep receipts and records for six years (no receipt, no deduction), and since January 1, 2024, short-term rentals operating against municipal licensing or zoning rules lose the ability to deduct expenses at all.
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Key Takeaways
- Two questions place almost every expense: repair or improvement, and rental or personal use of funds.
- Current expenses come off in full this year; capital ones are claimed over time through CCA.
- Mortgage interest is deductible; principal never is — and interest follows the use of the funds.
- Prepaid, financing, and lease-cancellation costs get spread out, not deducted all at once.
- If you live in the property, prorate; and principal, your own labour, land transfer tax, and fines never qualify.
Conclusion
The T776 expense section rewards two judgments above all: repair versus improvement, and rental versus personal use of funds. Current expenses come off in full this year; capital ones go through CCA. Mortgage interest is deductible but principal never is, prepaid and financing costs get spread out, and if you live in part of the property you prorate. A short list — principal, your own labour, land transfer tax, fines — never qualifies at all.
It looks like a maze, but it's really a checklist wrapped around two questions, and clean, categorized records kept all year make it painless. This is general information, not tax advice — take the grey-area calls to a CPA and verify the current rules with the CRA at canada.ca.
Frequently Asked Questions
What expenses can I deduct on my rental property in Ontario?
Reasonable expenses to earn rental income: advertising, insurance, mortgage interest, property taxes, repairs and maintenance, management and legal/accounting fees, utilities you pay, travel, and more — reported on Form T776. Improvements aren't deducted in full; they're claimed over time through CCA.
Is mortgage interest deductible on a rental property in Canada?
Yes — the interest portion of your mortgage payment is deductible, but the principal repayment is not. And after a refinance, interest is only deductible on the portion of the loan actually used for the rental.
Is a new roof a repair or a capital expense?
A new roof is generally a capital expense, because it improves the property and provides a lasting benefit — so it's claimed over time through CCA, not deducted in full. Repairing a section of the existing roof is usually a current expense.
Can I deduct renovations on my rental?
Usually not all at once. Renovations that improve the property beyond its original condition are capital and go through CCA. Routine repairs that restore it to original condition are current expenses you can deduct this year.
How do I deduct expenses for a basement apartment I rent out?
Deduct 100% of costs that relate only to the rented unit, plus a reasonable share of whole-home expenses based on rooms or square footage — for example, an 800 sq ft suite in a 2,000 sq ft home is 40%. Claiming 100% of shared costs is an audit red flag.
What rental expenses are not deductible in Canada?
Mortgage principal, the value of your own labour, land transfer tax (it's added to your cost base), and fines or penalties are never deductible on the T776.
