How This DTC Calculator Works
Our Disability Tax Credit calculator uses CRA-indexed 2026 federal and provincial rates to estimate how much credit you may receive. All calculations happen instantly in your browser, no data is sent to any server.
Federal DTC Calculation (2026)
- Base federal disability amount: $10,341
- Federal tax rate: 14%
- Federal credit value: $10,341 × 14% = $1,448
- Child supplement (under 18): $6,032; combined federal base and supplement × 14% = $2,292
Provincial DTC Calculation
Each province sets its own disability amount and lowest marginal tax rate. Provincial credit = provincial disability amount × provincial rate. The illustrated adult provincial base credit ranges from $530 (Ontario) to $1,498 (Saskatchewan), excluding Québec. Provincial child supplements and other return adjustments are not included.
Retroactive Calculation
If you were eligible in prior years but didn't claim, you may file T1-ADJ adjustments for up to 10 years. The calculator multiplies the 2026 annual illustration by the years selected for comparison only. Actual retroactive amounts require each prior year's rates, approved eligibility and tax payable.
ℹ Non-Refundable Credit Note
The DTC is non-refundable, meaning it reduces your tax payable to zero but cannot generate a cash refund on its own. However, unused credit can be transferred to a supporting person. Retroactive claims apply the credit against taxes paid in each prior year.
2026 DTC Rates by Province
*Amounts use official 2026 federal and provincial sources. The adult federal base illustration is $1,448 before any applicable Quebec abatement. Québec has separate provincial rules; see its guide. Provincial child supplements and other return adjustments are excluded.
Check Eligibility Before Using an Estimate
The condition guides explain how daily-function limitations can relate to DTC criteria, including ADHD and mental functions and autism and daily-function evidence. Use them to prepare a discussion with your practitioner, not to self-certify eligibility.
A DTC refund estimate is separate from monthly benefit payments. Parents can read the Child Disability Benefit guide; working-age adults can check the Canada Disability Benefit requirements. Approved applicants can also explore RDSP savings options.
Next Steps After Calculating
- Check the DTC functional eligibility requirements. A diagnosis alone usually does not establish eligibility.
- Read our T2201 application guide, then complete the official Form T2201 with an authorized practitioner.
- Submit to CRA and check its current processing information. A processing estimate is not an approval guarantee.
- Claim the credit on line 31600 of your federal return.
- For retroactive claims, file T1-ADJ adjustments for eligible prior years.