Child Disability Tax Credit: What Families Can Get in 2025

What is the child disability tax credit and what is it worth?

The child disability tax credit is the Disability Tax Credit, or DTC, claimed for an eligible child. For the 2025 tax year, the federal disability amount is $10,138 and the supplement for a child under 18 is up to $5,914, for a combined amount of up to $16,052.

That $16,052 is not a cheque. It is the amount used to calculate a non-refundable federal tax credit. The credit can reduce federal income tax that would otherwise be payable, but any unused portion is not paid to the family. Provincial or territorial disability amounts may also apply, and they vary by province.

Parents often use “child disability tax credit” as a broad label for several programs. That creates expensive confusion. The DTC, the child disability benefit and the Canada Disability Benefit have different rules, payment methods and amounts.

The table is a starting point, not a personal estimate. The actual result depends on the program. Tax payable matters for the DTC. Adjusted family net income affects the child disability benefit. The Canada Disability Benefit follows a separate calculation. Eligibility for one amount does not turn every maximum into money your family will receive.

Which child disability payments can your family receive?

A family may benefit from the DTC, the child disability benefit and, where the separate rules are met, the Canada Disability Benefit. The DTC reduces tax. The child disability benefit is tax-free and monthly. The Canada Disability Benefit is a different monthly program and should not be called the CDB.

The DTC reduces tax otherwise payable

The DTC is a non-refundable credit. For 2025, the disability amount is $10,138. The federal non-refundable rate is about 15%, so the disability amount alone can reduce federal tax by roughly $1,500 when enough tax is otherwise payable. The under-18 supplement can increase the amount used in the credit calculation.

If the child cannot use the disability amount, a supporting family member may be able to claim a transferred amount on line 31800. A claim still depends on the CRA approving the child for the DTC and on the tax situation of the person making the claim.

The child disability benefit is a tax-free monthly payment

The child disability benefit is for families eligible for both the Canada child benefit and the DTC. From July 2026 to June 2027, it pays up to $3,480 per year, or $290.00 per month, for each eligible child. It is reduced above the verified family-income threshold described below.

This payment is not the cash value of the DTC. It is a separate benefit. A family can therefore have a DTC tax claim and a child disability benefit payment, but each result must be determined under its own rules.

The Canada Disability Benefit is another program

The Canada Disability Benefit is newer and distinct from the child disability benefit. Its maximum is $204.20 per month from July 2026 to June 2027, based on the 2025 return. For July 2025 to June 2026, the maximum is $200 per month, based on the 2024 return.

A fixed $150 supplemental payment is scheduled to start in Fall 2026 to help offset the cost of obtaining the DTC. No application is needed for that supplemental payment. Do not add the three program maximums together as a promised household total. Their eligibility tests and calculations are different.

The age milestone matters because the supplement applies to children under 18. The base disability amount remains a tax amount, while the child disability benefit has its own monthly schedule. Keeping the child’s tax year and the benefit payment period separate prevents a common reading error.

How is the DTC amount for a child calculated?

For a child under 18 in the 2025 tax year, start with the $10,138 disability amount and add a supplement of up to $5,914. The combined amount is up to $16,052. A non-refundable rate is then applied, and the usable credit cannot exceed the federal tax otherwise payable.

The word “amount” causes much of the confusion. The amounts below are bases used in a tax-credit calculation. They are not refunds and they are not monthly benefits. The under-18 supplement can also be reduced when specified care expenses are claimed for the child.

These historical figures matter when the CRA recognizes eligibility for earlier years. The retroactive window can reach up to 10 years, but a table of tax amounts still cannot tell you the family’s refund. The person claiming the amount must have tax otherwise payable, and previous returns may need to be adjusted.

What reduces the DTC supplement for a child under 18?

The under-18 supplement is reduced when child care or attendant care expenses for the child are claimed on specified tax-return lines. The rule can apply when someone else claims expenses for the child or when the child claims attendant care expenses. The base disability amount is separate from this supplement reduction.

This is the detail that is easy to miss. The supplement is not automatically the full $5,914 merely because a child is under 18 and approved for the DTC. Check who claimed the expense, what kind of care it covered and which line was used.

Keep the expense claim and the DTC claim side by side when preparing the return. A child care deduction or attendant care claim may still be appropriate, but it changes how the under-18 supplement is calculated. The right comparison is the family’s complete return, not one credit viewed alone.

For 2025, the visual separates the $10,138 disability amount from the supplement of up to $5,914. That distinction lets a parent see why the published combined amount is a ceiling, not an automatic credit base in every return.

How does family income affect the child disability benefit?

From July 2026 to June 2027, the child disability benefit is reduced when adjusted family net income exceeds $82,847. The reduction is 3.2% of the excess for one eligible child and 5.7% for two or more eligible children. Below that threshold, other eligibility rules still apply.

The reduction applies to the child disability benefit, not to the DTC tax amount. Families sometimes read the income threshold as a DTC cutoff. It is not. The family must first be eligible for both the Canada child benefit and the DTC, and then the child disability benefit amount is calculated.

If you want a practical estimate before reviewing the return, use the REEI.ca calculator as a planning tool. An estimate cannot replace the CRA’s determination, and it should not be treated as a promise of approval or payment.

How do you apply for the DTC for a child?

The DTC process has two distinct stages. First, apply to the CRA and have a medical practitioner certify the effects of the impairment. After the CRA approves eligibility, claim the disability amount on the tax return. Approval is also required to open and maintain a Registered Disability Savings Plan, or RDSP.

Apply online or use the current paper form

The CRA says its online DTC application form in a CRA account is processed faster than paper. A paper applicant must download the latest Form T2201, have the required sections completed and mail it to the tax centre. There is no verified processing-time figure in this guide because the timeline depends on the file and CRA review.

Since July 14, 2026, the “submit documents” section of a CRA account can no longer be used to send a DTC application unless the CRA specifically requested more information. Use the DTC application route in the account, or the current paper process, rather than treating general document upload as a substitute.

Use a current T2201 before the cutoff

As of September 8, 2026, the CRA will no longer accept versions of Form T2201 from before 2023. If a family or practitioner has an older copy in progress, replace it with the latest version before submission. The official T2201 page is the right place to download the current paper form.

The application comes before the tax claim. A detailed medical certification supports the CRA’s eligibility decision, but neither the form nor professional help can guarantee approval. Keep a copy of what was submitted and use the CRA decision when preparing current or adjusted returns.

Which tax-return lines matter for a child DTC claim?

Once the CRA approves eligibility, the relevant line depends on who is claiming the amount. Line 31800 covers a disability amount transferred from a dependant. Other lines track a person’s own disability amount, spouse transfers and expenses that can affect the child supplement. Do not place every disability-related item on one line.

A practitioner’s fee for completing Form T2201 may be included as a medical expense on line 33099 or 33199. Attendant care on those lines can also trigger the supplement reduction rule. The label on the receipt matters less than how the expense is actually claimed on the return.

Can the child disability tax credit be claimed for past years?

Yes. The DTC can be claimed retroactively for up to 10 years when the CRA recognizes eligibility for those years. Each year uses its own disability amount and under-18 supplement. A retroactive adjustment may reduce tax previously paid, but the result depends on the approved years and tax otherwise payable.

The historical table above lists the verified federal amounts from 2016 through 2025. Do not multiply those amounts by the federal rate and call the result a guaranteed refund. The child may not have been under 18 in every approved year, care-expense claims may reduce supplements, and the transferred amount depends on the supporting person’s return.

A useful review gathers the CRA eligibility period, the child’s age in each tax year, prior child care or attendant care claims, and the supporting person’s returns. REEI.ca can help families review the DTC application path, but the CRA makes the eligibility decision.

What does DTC approval mean for an RDSP?

DTC approval is required to open and maintain an RDSP. The RDSP is separate from the DTC tax credit and the monthly disability benefits in this guide. Approval creates access to the plan, but opening an account is a separate action with its own documents, decisions and long-term savings purpose.

Families who have an approval decision and want to move to the savings step can review how to open an RDSP. Do not wait until tax filing to separate the two tasks. The DTC establishes eligibility; the RDSP holds long-term savings under a different set of rules.

What should Quebec families do next?

Start by identifying the program you are trying to access, then use the correct application or tax-return route. For the DTC, confirm the current T2201 process and the tax claimant. For the child disability benefit, verify CCB and DTC eligibility. Treat the Canada Disability Benefit as a separate program.

Quebec families may also encounter provincial tax measures, but provincial and territorial amounts vary and are not quoted here. This guide stays with verified federal figures. A careful review should connect the CRA decision, the correct tax year, the care-expense lines and the family-income rules without collapsing them into one “child disability payment.”

The practical takeaway is simple. The 2025 child DTC amount can reach $16,052 before the non-refundable rate is applied, the child disability benefit can pay up to $290.00 per month in its current payment period, and the Canada Disability Benefit has a separate maximum of $204.20 per month. Each figure answers a different question.