Child disability benefit calculator
Enter your adjusted family net income and how many children are eligible for the disability tax credit. You get the monthly and yearly benefit.
Free · no signup Runs in your browser
Working with a different rate? Edit the rates this calculator uses
These are the figures we verified on 2026-10-23. Change them to work with a historic period, or with a new rate that has been announced but which we have not published yet.
How much is the child disability benefit?
For July 2026 to June 2027 it is up to $290 a month ($3,480 a year) for each child under 18 who is eligible for the disability tax credit. It is reduced when adjusted family net income is above $82,847: by 3.2% of the excess for one child and 5.7% for two or more. With one child and $115,000 of income you would get $204.26 a month.
Why we built this calculator
The child disability benefit is paid on top of the Canada Child Benefit for a child who qualifies for the disability tax credit, but it is easy to miss because the Canada Child Benefit calculators rarely include it. It is reduced separately, from a much higher income than most people expect, and the reduction rate is different for one child than for two or more.
If you receive the Canada Child Benefit for a child with an approved disability tax credit, you get it automatically. See the Canada Child Benefit calculator for the main benefit and the disability tax credit calculator for the credit.
It runs in your browser. Nothing you enter is sent anywhere, and there is no sign-up.
When to use it
- Estimating the extra benefit for a child with a disability
- Seeing how family income reduces the amount
- Checking the amount on your benefit notice
- Planning a budget for a family with more than one eligible child
Mistakes it helps you avoid
- Assuming the benefit stops at the same income as the Canada Child Benefit.
- Using the one-child reduction rate for two children.
- Forgetting that the child must be eligible for the disability tax credit.
- Using last year's income instead of the base year.
How the benefit is worked out
A full monthly amount for each eligible child, less a share of income above the threshold.
full benefit = $290 a month × number of eligible childrenreduction = rate × (adjusted family net income − $82,847) ÷ 12 a monthrate = 3.2% for one child, 5.7% for two or moremonthly benefit = full benefit − reduction, not less than zero
The CRA page gives the $290 maximum, the $82,847 threshold and the 3.2% and 5.7% rates. We turned them into a monthly formula and checked it against every row of the CRA's guideline table for one, two and three children, where it matches to within one cent. The CRA table covers up to three children, so the calculator does too. The benefit is recalculated each July using the prior year's tax return.
Worked example: one eligible child, $115,000 family income
You have one child eligible for the disability tax credit, and an adjusted family net income of $115,000 for 2025.
- Income over the threshold: $115,000 − $82,847$32,153
- Reduction per year at 3.2%$1,028.90
- Reduction per month: ÷ 12$85.74
- Monthly benefit: $290.00 − the reduction$204.26
The estimated benefit is $204.26 a month, $2,451.10 a year. The CRA table shows $204.25 for this income.
With two eligible children the same income gives $427.27 a month, because the 5.7% rate applies to a full benefit of $580.
Terms on this page
- Adjusted family net income
- The family income measure the benefit is reduced against.
- Disability tax credit
- A credit for people with a severe and prolonged impairment; a child must be eligible for it to qualify.
What has changed, and when
Rates on this page have not always been what they are today. If you are working on an earlier period, use the figure that applied at the time rather than the current one.
- July 2026 Maximum $290 a month per child; reduction from $82,847 at 3.2% or 5.7%.
Common questions
How much is the child disability benefit?
Up to $290.00 a month, or $3,480 a year, for each child under 18 eligible for the disability tax credit, for July 2026 to June 2027.
Do I have to apply?
If you already receive the Canada Child Benefit for a child with an approved disability tax credit, you get it automatically, according to the CRA.
When does the benefit start to be reduced?
When adjusted family net income is over $82,847, by 3.2% of the excess for one child and 5.7% for two or more.
Which year's income is used?
The prior year's: the July 2026 to June 2027 amounts are based on 2025 income, and the amount is recalculated each July.
Is the child disability benefit taxable?
The CRA describes it as a tax-free monthly payment.
Where these numbers come from
- Canada Revenue Agency — Child disability benefit The $290 maximum, the $82,847 threshold and the reduction rates; page dated June 15, 2026.
- Canada Revenue Agency — CDB guideline table effective July 2026 to June 2027 Monthly amounts by income for one to three eligible children (2025 base year).
Last verified 2026-10-23 Rates on this page are checked against the sources above at least once a year, and whenever the governing authority announces a change. Spotted something out of date? Tell us and we will fix it.
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