Deductions, Credits, and the Myths That Cost You Money
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Every tax season, Canadian homeowners ask the same question: what can I actually write off? The answer is more nuanced than most people expect — and it's changed recently. There are real deductions and credits available that many homeowners don't know about, but there's also a surprisingly long list of expenses that people assume are deductible and simply aren't.
The confusion is understandable. Canada's tax system treats homeowners very differently depending on whether they live in the property, rent it out, work from home, or have recently renovated. A mortgage payment that's completely invisible to the CRA when you're an owner-occupier suddenly becomes partially deductible the moment you rent out a basement suite. A kitchen renovation that offers zero tax benefit on your principal residence could qualify for a $7,500 refundable credit if it creates a secondary suite for an aging parent.
This guide separates what's real from what's myth. We'll walk through the deductions and credits you can legitimately claim, the provincial programs that vary across the country, and — just as importantly — the common expenses that aren't deductible no matter how many times you've heard otherwise.
Before we get into the details, here's a summary of the most common homeowner expenses and whether they're deductible. Keep in mind that "rental portion" means the expense is only deductible against rental income, proportional to the space being rented.
If you work from home, this section matters. The rules shifted meaningfully after the pandemic, and many homeowners haven't caught up.
During the pandemic, the CRA introduced a simplified flat-rate method that allowed employees to claim $2 per day worked from home, up to a maximum of $500 per year — no receipts, no calculations, no form from your employer. It was simple and widely used, but it was always temporary. The flat-rate method was available for the 2020 through 2022 tax years only and is no longer an option for 2023 and later.
If you're still expecting to claim a quick $500 deduction with no paperwork, that door has closed.
For the 2023 tax year and beyond, employees who work from home must use the detailed method. This requires your employer to complete a T2200 (Declaration of Conditions of Employment) confirming that you were required to work from home and that your employer did not reimburse your expenses.
Once you have the T2200, you can deduct a reasonable proportional share of eligible home expenses based on the size and use of your workspace. For salaried employees, eligible expenses include electricity, heating, water, internet, and home maintenance costs. If you're a commission employee with a T2200 that specifically authorizes it, you may also deduct a portion of home insurance and property taxes — but this is the exception, not the rule.
There's an important eligibility threshold: your home workspace must either be where you principally perform your duties (more than 50% of the time) or be used exclusively and regularly for meeting clients or customers. A kitchen table you occasionally work from does not qualify.
If you're self-employed or run an unincorporated business, the rules are more generous. The CRA allows self-employed individuals to deduct a reasonable share of home maintenance, insurance, property taxes, and mortgage interest against business income — expenses that salaried employees generally cannot claim.
For homeowners who rent out part of their property — whether it's a basement suite, a spare room, or a laneway house — the tax landscape shifts dramatically. Rental income is taxable, but it also unlocks a wide range of deductions that aren't available to owner-occupiers.
According to the CRA's Rental Income guide (T4036), landlords can deduct a proportional share of mortgage interest (not principal), property taxes, insurance premiums, utilities, advertising, and maintenance costs attributable to the rented portion of the property. If you rent out 30% of your home's square footage, roughly 30% of those shared expenses become deductible against your rental income.
This is where most new landlords make mistakes. The CRA draws a clear line between a current expense (fully deductible in the year you incur it) and a capital expense (not immediately deductible — instead added to the property's adjusted cost base and potentially depreciated over time through capital cost allowance).
The rule of thumb: a repair restores something to its original condition; an improvement enhances value, extends useful life, or adapts the property to a new purpose. Replacing a broken furnace with the same type is a repair. Upgrading to a high-efficiency system is a capital improvement. Patching a leaky roof is a repair. Replacing the entire roof with premium materials is likely a capital improvement.
Getting this wrong doesn't just mean an incorrect tax return — it can trigger a reassessment. When in doubt, talk to your accountant before filing.
Capital cost allowance (CCA) lets you depreciate the value of your rental property over time, which sounds appealing. But the CRA warns that claiming CCA on a property that is also your principal residence can reduce or eliminate your principal residence exemption when you sell. Most accountants advise caution here — the tax savings from CCA are often far smaller than the exemption you'd lose.
The principal residence exemption is the single most valuable tax benefit available to Canadian homeowners. Under paragraph 40(2)(b) of the Income Tax Act, the capital gain on the sale of your principal residence is fully exempt from tax. For most homeowners, this means the profit from selling their home is completely tax-free.
But the rules are more specific than many people realize.
For any tax year after 1981, only one property per "family unit" — which includes you, your spouse or common-law partner, and your minor children — can be designated as a principal residence. If you own both a house and a cottage, you can designate only one of them for each year you own both. The CRA's principal residence folio explains this in detail and is worth bookmarking if you own more than one property.
The exemption uses a "plus-one" formula (sometimes called the 1+n rule) that allows a property owned for n years to be designated for n+1 years, offering some flexibility during transitions. This can be especially useful if you buy a new home before selling your old one.
A "change of use" occurs when you start using your home — or part of it — to earn income. Converting your principal residence into a full rental, for example, triggers a deemed disposition at fair market value. This means the CRA treats you as if you sold and immediately repurchased the property, potentially creating a taxable capital gain on any appreciation up to that point.
However, a subsection 45(2) election is available that allows you to defer this deemed disposition for up to four years, provided you don't claim CCA on the property during that period. This can be a valuable tool if you're temporarily renting out your home and plan to move back.
If you rent out a portion of your home — say, a basement suite — while continuing to live upstairs, the change-of-use rules still apply to the rented portion. Understanding how property tax assessments interact with rental use can also help you manage the financial picture of becoming a part-time landlord.
Canada offers several tax credits for specific types of home renovations. These aren't deductions (which reduce taxable income) — they're credits (which directly reduce the tax you owe). Understanding the difference matters: a $1,000 deduction saves you tax at your marginal rate, while a $1,000 credit saves you $1,000 regardless of your income.
The MHRTC is a federal refundable credit designed for homeowners who build a secondary suite for a senior family member (65 or older) or a family member eligible for the disability tax credit. The credit is equal to 15% of up to $50,000 in qualifying renovation expenses, meaning the maximum benefit is $7,500 per qualifying renovation.
Because it's refundable, the MHRTC can generate an actual refund even if you owe no tax. Eligible expenses include the cost of labour, building materials, fixtures, permits, and professional services related to creating a self-contained living unit — typically a suite with its own entrance, kitchen, and bathroom. The suite must be intended as a primary residence for the qualifying individual.
The HATC is a non-refundable credit equal to 15% of up to $20,000 in eligible accessibility expenses, for a maximum credit of $3,000. It covers renovations that improve accessibility or reduce the risk of harm for a qualifying individual — someone who is 65 or older or who is eligible for the disability tax credit.
Eligible projects include ramps, stairlifts, walk-in showers or tubs, grab bars, doorway widening, lowered countertops, and hands-free faucets. If you're making your home more accessible for an aging parent or a family member with a disability, this credit is worth claiming.
Several provinces offer their own home renovation tax credits on top of the federal programs. These vary significantly, and not every province has one.
British Columbia offers a Home Renovation Tax Credit for Seniors and Persons with Disabilities — a refundable credit equal to 10% of up to $10,000 in eligible expenses, for a maximum credit of $1,000.
Saskatchewan reinstated its Home Renovation Tax Credit for 2025 and later taxation years, providing a non-refundable credit of 10.5% on up to $20,000 in eligible renovation expenses, for a maximum credit of $2,100.
New Brunswick has a Seniors' Home Renovation Tax Credit designed to help seniors with the cost of age-related home modifications.
Ontario doesn't have a standalone renovation credit, but the Ontario Trillium Benefit combines three provincial credits, including the Ontario Energy and Property Tax Credit, which helps offset property tax and energy costs for lower-income homeowners.
Ontario also runs the Home Renovation Savings Program, which provides rebates — not tax credits — for eligible renovation projects.
Quebec does not currently have an active general home renovation tax credit. Earlier programs like LogiRénov (2014–2015) and RénoVert (2016–2019) have expired. Quebec homeowners may still qualify for a GST/QST rebate if they substantially renovate their home, but this applies only to major renovations, not general improvements.
Tax credits and programs change frequently. If your province isn't listed here, check your provincial government's tax credit page before filing — new programs can appear (and expire) with little fanfare.
While these programs are primarily aimed at first-time buyers, existing homeowners often wonder whether they can use them — especially after a separation or when purchasing a second property.
The First Home Savings Account (FHSA) allows eligible first-time home buyers to contribute up to $8,000 per year, with a lifetime limit of $40,000. Contributions are tax-deductible (like an RRSP), and withdrawals for a qualifying home purchase are tax-free (like a TFSA). It's the best of both worlds, but it's only available to people who have not owned a home in the current or previous four calendar years.
The Home Buyers' Plan (HBP) allows a first-time buyer to withdraw up to $60,000 from their RRSPs on a tax-deferred basis to purchase a qualifying home. The withdrawal must be repaid over 15 years, starting the second year after the withdrawal. If you've used the HBP before, you can use it again — but only if you've fully repaid the previous balance and meet the first-time buyer definition again.
If you're planning a home purchase, understanding the full picture of upfront costs — including land transfer tax — can help you decide how much to withdraw and how to budget.
This may be the most important section of the article, because the myths here are persistent and widespread. If you live in your home and don't rent any part of it out, the list of things you cannot deduct or claim is long.
Mortgage principal payments are never deductible for Canadian individual taxpayers, under any circumstances. Even mortgage interest on an owner-occupied home is not deductible — a notable difference from the United States, and one that catches Canadian-American transplants off guard.
Property taxes on your principal residence have no federal deduction. Ontario homeowners may receive partial relief through the Ontario Trillium Benefit, but this is an income-tested credit, not a deduction.
Home insurance premiums on an owner-occupied home are not deductible. They become partially deductible only when you earn rental income — and only for the portion attributable to the rented space. Understanding what your home insurance actually covers is a separate but equally important question.
General repairs, maintenance, and renovations — repainting, new flooring, kitchen upgrades, landscaping, appliances, furniture — offer no tax benefit on an owner-occupied home unless they qualify under a specific credit program like the MHRTC or HATC. The belief that "renovations are tax-deductible" is one of the most common and costly misunderstandings among Canadian homeowners.
Condo fees are not deductible for owner-occupied units. Like insurance and property taxes, they become partially deductible only when the unit generates rental income.
This article is a guide, not a substitute for professional tax advice. Tax rules change, individual situations vary, and the CRA interprets provisions on a case-by-case basis. If you're claiming rental income, home office expenses, or navigating a change of use, working with a qualified accountant or tax professional is well worth the cost. Canada also recently eliminated the Underused Housing Tax starting in 2025 — one less filing obligation for most homeowners.
No. The simplified flat-rate method was available only for the 2020 through 2022 tax years. For 2023 and later, you must use the detailed method, which requires a T2200 form from your employer and involves calculating your eligible expenses based on the size and use of your workspace.
Mortgage principal is never deductible. Mortgage interest is deductible only against rental income (for the rental portion of your property) or in limited cases for commission employees with home offices. Owner-occupied mortgage interest is not deductible — unlike in the United States.
Generally, no — not for an owner-occupied home. However, specific federal credits exist for renovations that create a secondary suite for a senior or disabled family member (MHRTC, up to $7,500) or that improve accessibility (HATC, up to $3,000). Some provinces also offer renovation credits.
A deduction reduces your taxable income, saving you tax at your marginal rate. A credit directly reduces the tax you owe, dollar for dollar. Most homeowner-related tax benefits in Canada are credits, not deductions. Some credits are refundable (they can generate a refund even if you owe no tax) and some are non-refundable (they can only reduce your tax to zero).
Not for an owner-occupied home. Home insurance premiums become partially deductible only if you rent out part of your property, and only for the portion of the premium attributable to the rental space.
A repair restores something to its original condition and is fully deductible as a current expense. A capital improvement enhances value, extends useful life, or changes the property's use — it's added to the adjusted cost base and depreciated over time. Replacing a broken furnace with the same model is a repair; upgrading to a high-efficiency system is a capital improvement.
Not in the same year. For tax years after 1981, only one property per family unit can be designated as a principal residence per year. However, the "plus-one" formula in the exemption calculation provides some flexibility during transitions.
Converting your principal residence to a rental triggers a "change of use," which the CRA treats as a deemed disposition at fair market value. This can create a taxable capital gain. However, a subsection 45(2) election lets you defer this deemed disposition for up to four years, provided you don't claim capital cost allowance during that period.
The MHRTC is a federal refundable credit of up to $7,500 (15% of up to $50,000 in eligible expenses) for creating a self-contained secondary suite for a senior family member (65+) or someone eligible for the disability tax credit. The suite needs its own entrance, kitchen, and bathroom.
There is no federal deduction for property taxes on a principal residence. Ontario residents may qualify for partial relief through the Ontario Trillium Benefit, which includes the Ontario Energy and Property Tax Credit. Property taxes are, however, deductible against rental income for the rental portion of a property.
