Most pages answering this question lead with a large number. This one leads with the arithmetic, because the Disability Tax Credit does not work the way the large numbers imply.
The federal disability tax credit, or Canadian disability tax credit as people often call it, exists to recognize the additional costs of living with a prolonged physical or mental impairment. The tax agency decides who qualifies against its own eligibility criteria, and what you actually receive depends on your tax situation rather than on your diagnosis.
This page is for the person with the impairment and the family member working out whether it is worth applying. It covers the federal amount, the child supplement, the provincial share, retroactive claims, and what approval unlocks.
Canadian Benefits Association is a private company and is not affiliated with any government agency. You can apply for the Disability Tax Credit yourself, free of charge.
The short answer
For the 2026 tax year, the federal disability amount is $10,341. Non-refundable credits are calculated at the lowest federal tax rate, which is 14 percent in 2026, so the federal credit is worth about $1,448 in reduced tax for an adult.
Add the provincial or territorial credit and the combined value for an adult is often roughly $1,700 to $2,200 a year, if there is enough tax payable to use it. Provincial tax rates differ, so the provincial share swings more than the federal one.
For a child under 18, the supplemental amount pushes the federal side to about $2,292 a year, before the provincial credit.
Those are the annual figures. The larger numbers people see come from claiming previous tax returns, which is covered below.
What non-refundable means, and why it decides everything
The DTC is a non-refundable tax credit rather than a refundable tax credit. It reduces the income tax you owe. It does not pay you.
If you owe $4,000 in federal tax and the credit is worth $1,448, you now owe $2,552. If you owe $900, the credit wipes out the $900 and the rest is not paid out to you. Eligible individuals on a lower income often cannot use the maximum amount, and the unused portion is not paid out.
Put another way, the credit reduces tax liability against taxes paid. If you have no taxable income at all, the credit is worth nothing to you directly. It may still be worth something to a supporting family member, and it still matters because DTC approval is the gateway to other programs. But the credit itself produces no payment.
This is the difference between the DTC and a refundable tax credit, and it is where most of the confusion in this category comes from.
The federal disability amount for 2026
The base disability amount is indexed every year. For 2026 it is $10,341, up from $10,138 for 2025.
That figure is not the money. It is the amount you enter on line 31600 of your income tax return, and the credit is that amount multiplied by the lowest federal rate.
$10,341 at 14 percent is $1,447.74 in reduced federal tax for an adult who has at least that much tax payable.
The supplement for eligible individuals under 18
Where the person with the impairment was under 18 at the end of the tax year, there is a supplement on top of the base amount. The maximum amount for 2026 is $6,032.
Base plus supplement is $16,373, which at 14 percent is $2,292.22 in reduced federal tax.
One catch worth knowing before you count on it. The supplement is reduced when child care expenses or attendant care expenses were claimed for that child above a threshold, by you or by anyone else. Families paying for significant child care often receive less than the maximum, or none of the supplement at all.
Why the 2026 credit is worth slightly less than 2025
This one surprises people, and almost nobody publishes it.
For 2025, the disability amount was $10,138 and non-refundable credits were calculated at 14.5 percent, a transitional rate. That is $1,470.01.
For 2026, the amount rose to $10,341 but the rate dropped to 14 percent. That is $1,447.74.
The indexation went up. The credit rate came down further. The net result is that the federal DTC is worth about $22 less in 2026 than in 2025, even though the headline amount increased. Most people come out ahead overall because their income tax is lower too, but if you are comparing year to year on the credit alone, that is why the number moved the wrong way.
Provincial and territorial amounts
Every province and territory has its own disability amount and its own lowest tax rate, and the two get multiplied the same way.
How the provincial share is calculated
Ontario is the clearest example. The Ontario disability amount for 2025 was $10,298, and Ontario’s lowest rate is 5.05 percent, which works out to about $520 in reduced Ontario tax.
Why the provinces differ so much
Alberta sets a much higher amount, $17,219 for 2025, taxed at 8 percent, which is about $1,378. British Columbia sat at $9,699 with a rate of 5.06 percent in 2025, rising to 5.60 percent for 2026. Quebec administers its own credit entirely.
We publish the current figure for each province on the provincial pages rather than here, because provincial amounts are indexed on their own schedules and a single table goes stale fast.
A worked example
An adult in Ontario, approved for 2026, with enough taxable income to use the whole credit.
Federal: $10,341 at 14 percent equals $1,447.74
Ontario: roughly $10,300 at 5.05 percent equals about $520
Total reduction in tax payable: about $1,968 for the year
Not a cheque for $1,968. Tax payable reduced by about $1,968. If this person owed $1,200 in combined tax that year, the benefit stops at $1,200.
About the “$40,000 disability tax credit”
You will see this figure in ads. Here is where it comes from, and why it is not a forecast.
To get near $40,000 you need all of the following at once: approval that reaches back the full 10 years, a child claim carrying the under-18 supplement for most of those years, enough tax payable in every one of those years to absorb the credit, and a province at the higher end of the range.
Run the honest version. Ten years of the federal child figure is about $22,900 before any provincial credit. Add a provincial credit and you are in the high twenties. Getting to $40,000 requires the unusual case, not the normal one.
For a typical adult approved for the full 10 years, the total is lower again, because the under-18 supplement does not apply, and lower still if there were years with little or no tax payable.
A firm paid on contingency has an obvious reason to quote the ceiling. We would rather you plan against the middle.
Retroactive claims and the 10 year window
If eligibility is approved for earlier years, you can ask for those previous returns to be adjusted. The tax agency will generally consider adjustments for the 10 previous calendar years.
Approval does not adjust old returns on its own
Approval for previous years does not reopen those previous tax returns by itself. You have to ask, year by year.
This is where most of the money in these files sits, and it is also where people stop too early.
Each year is a separate request and a separate reassessment. Ten approved years means ten adjustments, and they are processed one at a time.
Approval alone does not change prior years. Either you consent on the application to have previous returns adjusted automatically, or you request a change for each year afterward through your online tax account or a T1 adjustment request.
Each retroactive year is valued using that year’s disability amount and that year’s credit rate, not today’s. Interest may also be applied to refunds for earlier years.
If there is no taxable income
Someone living on a provincial disability program with no taxable income gets nothing directly from the credit.
That is not a reason to skip the application. DTC approval is the entry requirement for several programs that do pay money, and the credit may transfer to someone who supports them.
Transferring the credit
If the person with the impairment cannot use all of the credit, the remaining amount may transfer to a supporting family member: a spouse or common law partner, a parent, grandparent, child, sibling, aunt, uncle, niece, or nephew who provided basic necessities such as food, shelter, or clothing.
Splitting a claim between supporters
The transfer is claimed on the supporter’s income tax return. Where more than one person supported the individual, the claim can be split, but the total claimed cannot exceed the amount available.
Putting the supporting family member’s information in Part A of Form T2201 at the start saves sorting this out later.
Benefits that require DTC approval
Approval is worth more than the credit for a lot of families, because it unlocks programs that pay directly.
Child disability benefit
The child disability benefit is a tax free monthly payment added to the Canada child benefit for each child approved for the DTC. For July 2026 to June 2027 it is up to $3,480 a year, or $290.00 per month, per eligible child.
It is reduced once adjusted family net income passes $82,847, at 3.2 percent of the excess for one eligible child and 5.7 percent for two or more.
Canada disability benefit
The Canada disability benefit requires an approved DTC certificate. For July 2026 to June 2027 the maximum is $204.20 per month, and payments land on the third Thursday of each month.
It is income tested, starting to reduce above $23,000 for a single person and $32,500 for a couple, with a working income exemption of up to $10,210 single or $14,294 combined. From Fall 2026 there is also a supplemental amount fixed at $150, paid once for each approved DTC certificate.
Related credits that are not the DTC
The DTC is one piece of the financial support the Canadian government offers people with a severe and prolonged impairment, and it is not always the largest piece. It is worth knowing what else sits alongside it before you judge the credit on its own.
Two are worth knowing because they run on their own rules. The medical expense tax credit covers eligible costs on your annual tax return whether or not you have DTC approval. The Home Accessibility Tax Credit helps cover renovation costs that make a home safer or easier to get around in.
The disability supplement to the Canada Workers Benefit is for low income workers, and the Canada caregiver credit can be claimed by a family member supporting the same dependant. Between them, these related benefits often outweigh the credit itself for a household on a modest income.
Other federal programs
A registered disability savings plan (RDSP) requires DTC eligibility, and the federal grant and bond that come with it are usually the strongest route to long term financial security in this whole picture. For families caring for a child with a disability, the RDSP and the child disability benefit together are worth considerably more than the credit itself. The Canada workers benefit disability supplement also requires DTC approval. Various provincial and territorial programs and other disability programs use it as a gate as well.
Payment amounts for these support programs change every benefit year, so check the current published figure rather than trusting a number you read last year.
How to apply
The application process starts with Form T2201, the Disability Tax Credit Certificate. Part A is yours. A qualified medical practitioner completes Part B, and eligibility depends on what that health professional certifies: a medical professional confirming a severe and prolonged impairment in physical or mental functions that markedly restricts daily living, or that you require life sustaining therapy.
What is actually being tested
The eligibility criteria are about effect. The tax agency is looking for a marked restriction in one of the basic activities of daily living, or significant limitations in two or more that combine to the same level, present at least 90 percent of the time for at least 12 months. What matters is how the impairment affects an ordinary day.
How long approval takes
Approval may take up to 8 weeks after submission. That is the tax agency’s own service standard, and it aims to meet it 95 percent of the time, measured from when the completed form arrives.
Digital or paper
On the digital form, you complete Part A first and receive a reference number that your practitioner uses to open Part B. A legal representative can do this on someone else’s behalf. Once the medical practitioner certifies the file, the tax agency determines eligibility and sends a notice of determination stating which years are approved.
You can apply through your online tax account or on the paper form, and both parts have to travel the same route. As of July 14, 2026 you cannot send DTC applications through the submit documents section of your online tax account.
Applying is free. Your practitioner may charge to complete Part B, and that fee may be claimable as a medical expense.
When paid help is worth it
Canadian Benefits Association prepares Disability Tax Credit paperwork and nothing else. Thirteen years, 100 percent DTC practice, nothing to pay upfront, and you pay only if a refund is issued. Our registrations are public: representative ID GPF6SB, EFILE number K7112, Ontario Corporation 002381754, Business Name Registration 1001179177. We are a BBB accredited business.
When it is worth paying someone
Paid help earns its keep on complicated files: several impairments combining under the cumulative effect rule, a claim that should reach back years, a previous denial, or an applicant who is not well enough to manage the correspondence.
It earns nothing on a straightforward file where the medical practitioner completes a thorough Part B. Anyone can apply themselves, free.
Nothing on this page is professional advice about your own tax position. It is the arithmetic and the rules, so you can work out whether applying is worth your time.
The life-sustaining therapy route
One category is measured in hours instead of restrictions. Life-sustaining therapy must be required for at least 14 hours weekly, at least twice a week, to support a vital function. Dialysis and insulin therapy are the tax agency’s examples, and the disability tax credit DTC amount is exactly the same whichever category gets you there.
What the credit will not do
It will not arrive as a monthly cheque. It will not pay you if you owe no tax. It will not backdate itself without a request for each year. And it will not carry forward to a future year if you cannot use it now.
Those four points account for most of the disappointment people feel after approval, and all four are knowable before you apply.
Common questions
How much is the credit actually worth? Multiply the disability amount by the credit rate, federal and provincial, then cap it at the tax you owe. For an adult in 2026 that is about $1,448 federally plus your province’s share.
Is the DTC a monthly payment? No. It is a non-refundable credit claimed on your income tax return. The child disability benefit and the Canada disability benefit are the monthly payments, and both require DTC approval.
Do I get cash if I pay no tax? No. The credit reduces tax payable. With no tax payable there is nothing to reduce, though the credit may transfer to a supporting family member.
How far back can I claim? Adjustments are generally considered for the 10 previous calendar years, if your approval covers them.
Can I apply myself? Yes. The T2201 disability tax credit certificate is free to download, and you can apply yourself at no cost.
Figures on this page are the federal amounts published by the tax agency for the 2025 and 2026 tax years, and the benefit amounts published for July 2026 to June 2027. Verified September 15, 2026.
