HATC vs Medical Expense Tax Credit: When One Accessibility Renovation Can Support Both Claims

Assistance is where one renovation most often produces two different numbers. The credits treat outside money in opposite ways.

The Home Accessibility Tax Credit ignores government assistance

The HATC is not reduced by government assistance. Grants, forgivable loans and tax credits from the federal government or a province or territory leave the eligible amount intact. Reasonable rebates from a vendor or manufacturer generally do the same.

Other reimbursements are different. The Act excludes an expense from the HATC to the extent it can reasonably be considered to have been reimbursed, other than by federal or provincial government assistance. An insurance payment toward the work reduces the claim. So does a contribution from an employer plan.

The medical credit counts every reimbursement

The medical rule has no carve-out for government money. The CRA's instruction for eligible medical expenses is that "you can only claim the part of the expense that you or someone else have not been and will not be reimbursed for."

The statute is broader than most people expect. It removes an expense to the extent that the claimant, the patient or a related person is entitled to be reimbursed. Entitlement is the test, so an approved grant that has not yet been paid still counts. The one exception is a reimbursement that has to be included in income. Renovation costs claimed as medical expenses must also be reduced by related rebates, such as a goods and services tax or harmonized sales tax rebate.

On that wording, a provincial or municipal accessibility grant that pays back part of the cost of a ramp reduces the medical expense by the amount of the grant and leaves the HATC amount where it was. Programs differ in how they are structured, so confirm how yours is characterized before filing. The practical consequence holds either way: the starting figure for each credit must be built separately, and a single "amount paid" copied onto both lines is usually wrong for at least one of them.

Stacking rules are a recurring trap across renovation incentives generally. Homeowner.ca's guide to stacking renovation rebates in Ontario shows the same pattern on the energy side.

The following illustration uses invented figures to show the mechanics. It is not a prediction of anyone's result.

The facts. A homeowner aged 58 is approved for the disability tax credit and uses a wheelchair. Net income is $70,000 and there are no other medical expenses in the year. The renovation invoice, tax included, totals $18,000 and the contractor has itemized it into two groups: $15,000 for an exterior ramp, widened interior doorways and lowered kitchen counters, and $3,000 for a second stair handrail and permanent stairway lighting.

A provincial accessibility grant of $4,000 was paid toward the ramp. Assume the first group passes both tests, and the second group passes the HATC test as work that reduces the risk of harm but fails the medical filters as work of a type other households would normally undertake.

The 2025 return: reporting the same renovation under both provisions

Combined federal value for 2025: $3,900.50. The credit rate is the lowest federal tax rate, which Budget 2025 gives as 14.5% for 2025 and 14% for 2026 onward. The fixed threshold amounts come from the CRA's annual indexation table: $2,834 for 2025 and $2,890 for 2026.

Look at what happened to the $15,000 group. It was counted twice, once in each column, and that was permitted because each provision is a separate credit with its own test. This is the double claim. What would not be permitted, in any year, is counting an expense twice inside one credit: two family members each reporting the full ramp as a medical expense, or two owners each claiming the full $18,000 toward a HATC that is capped per person and per dwelling.

Notice also that the two columns never share a starting figure. The HATC began at $18,000. The medical claim began at $15,000 and fell to $11,000 before the threshold applied.

The 2026 return: the same facts, one claim per expense

Move the identical renovation into 2026. The rate is 14% and the $15,000 group can no longer sit in both columns.

Everything to the HATC. $18,000 at 14% produces $2,520. No medical claim is made for the renovation.

Medical first. The $15,000 group goes to the medical credit: $11,000 after the grant, $8,900 after the $2,100 threshold, for $1,246. Only the $3,000 handrail and lighting group remains for the HATC, producing $420. Total: $1,666.

On these facts the HATC route is worth $854 more, and the reasons generalize. The HATC has no threshold to absorb the first $2,100, and the grant does not reduce it. A different set of facts reverses the result, which is the subject of the next section.

For a 2026 renovation that passes both tests, the question is no longer "can I claim both?" It is "which credit should carry which expense?" Five conditions push the answer.

Total eligible cost against the $20,000 limit. Below the limit, the HATC usually produces more because nothing is subtracted first. Above it, HATC value stops and the medical credit is the only route for the excess. A project made up of several distinct expenses can place different items under different credits, since each item is its own expense.

Net income and other medical costs. The threshold is applied once to the year's total medical expenses. A household that has already cleared it with other costs loses nothing more by adding the renovation. A household with no other medical expenses gives up the threshold amount first.

Assistance received. Government grants favour the HATC for the expense they relate to, because the medical amount shrinks and the HATC amount does not.

Whether the HATC is available at all. If the person is under 65 and not approved for the disability tax credit, or the dwelling is not owned by the qualifying or eligible individual, the HATC is off the table and the medical credit is the whole analysis.

The refundable supplement. Both credits are non-refundable: they reduce federal tax owing and cannot push it below zero. The medical credit, though, feeds a refundable amount. According to the CRA's refundable medical expense supplement rules, a working filer with adjusted family net income under $63,374 and at least $4,390 of employment or self-employment income may qualify, using 2025 figures. The maximum supplement is $1,504 for 2025 and $1,534 for 2026. A filer who owes little federal tax may get more from a medical claim than the headline rate suggests.

One cost belongs to neither credit. Interest and other financing charges on the renovation are excluded from the HATC and are not medical expenses. How the work is funded is a separate decision, covered in Homeowner.ca's comparison of a HELOC, a home equity loan and a refinance.

The order of work matters more than the forms. Establish the tax year, test each expense, build each amount, then enter the figures.

Go or no-go: is a second claim worth investigating?

Work through these in order. A "no" to the first question ends the double-claim inquiry and turns it into an allocation decision.

• Tax year. Was the work performed, and were the goods acquired, in 2025 or earlier? If the expenses fall in 2026 or later, each expense supports one claim.
• HATC person and dwelling. Is there someone aged 65 or older at year end, or eligible for the disability tax credit, who ordinarily lives in the home, and is the home owned, alone or jointly, by that person or by an eligible individual claiming for them?
• Medical patient and filters. Does the person have a severe and prolonged mobility impairment or lack normal physical development that can be shown with records, and is the expense of a type that would not typically add value to the home and that people without the impairment would not normally incur?
• Payment timing. Was the amount paid within a 12-month period ending in the year of the medical claim, and not claimed in an earlier year?
• Other claimants. Has anyone else in the family reported, or do they plan to report, the same expense?

All five satisfied for a 2025 or earlier expense means both claims merit a calculation. Any gap on the medical questions means the HATC stands alone.

Where the figures go

The HATC is calculated on the chart for line 31285 on the Federal Worksheet and entered on line 31285 of the return. Medical expenses for the filer, a spouse or common-law partner and children under 18 are entered on line 33099, where the threshold is based on the filer's net income. Medical expenses paid for other dependants, such as a parent, are calculated separately for each dependant on line 33199 using that dependant's net income.

Supporting documents are not sent with the return. They are kept in case the CRA asks.

For a past renovation where only one credit was claimed and both tests were met, the return can be adjusted. The CRA's page on changing a tax return notes that a refund cannot be issued for adjustment requests beyond 10 calendar years.

The documentation checklist

Build one file that supports both claims, with the medical evidence layered on top.

• Contract and itemized invoices describing the scope of work and the address where it was done, and identifying the contractor, their business address and their GST/HST registration number, with a description of each element and the date the work was performed or the goods delivered
• Proof of payment for every invoice: receipts marked paid in full, card slips or cancelled cheques
• Property details showing who owns the home and that the qualifying individual ordinarily lives there
• Disability tax credit approval (Form T2201) if the HATC claim relies on disability status
• Medical support showing the person's mobility impairment and how the alterations relate to access, mobility or function, plus any prescription for items the CRA lists as needing one
• Assistance records: grant approval letters, payment confirmations, insurance settlements and any GST/HST rebate
• A calculation worksheet showing, for each invoice line, which credit it was assigned to, what was deducted and why, and who claimed it where more than one family member is involved

If relatives did the work, keep proof of their GST/HST registration. Goods or services supplied by a related person are not eligible for the HATC unless that person is registered. A homeowner who does the work personally can claim materials, fixtures, equipment rentals, plans and permits, but in the CRA's words "the value of your labour or tools cannot be claimed."

Households still at the design stage have decisions to make before any of this applies. Homeowner.ca's guide to designing a smart home for aging in place looks at the planning side.

Most single-year, single-claimant renovations under $20,000 can be handled with the framework above. Several situations are different in kind, and they share a feature: the legislation is new and the published guidance has not caught up.

A project that straddles the change. The HATC follows the year the work was performed. The medical credit follows payment and lets the claimant pick a 12-month window, which can reach back into the previous calendar year. A renovation done in late 2025 and reported as a medical expense in a period ending in 2026 raises a transitional question that the new exclusion's "any taxation year" wording makes consequential. Get advice before filing either return.

One large invoice. The rule speaks of an expense included in a medical claim. Whether a single undivided expense can be apportioned between the two credits is not something the text settles. Separate line items are separate expenses. A lump sum is harder.

More than one potential claimant. Spouses, adult children and a parent can each have a route to one or both credits. From 2026, one person's medical claim removes the expense from everyone's HATC. The family needs one plan.

Assistance with unusual terms. Forgivable loans, insurance settlements and grants paid directly to a contractor do not all behave the same way under the reimbursement rule.

Business or rental use. Where part of the home earns income, only the personal-use share of an expense is eligible for the HATC, and shared items such as a ramp must be divided.

Practitioners are reading the change the same way the statute does. One Canadian accounting firm's summary for clients puts it this way: "Starting in the 2026 tax year, you will no longer be able to claim the same expense under both the HATC and the METC."

Provinces and territories run their own credits and grant programs for seniors and accessibility work. They are separate programs with their own conditions, and nothing in this guide should be read as describing them.