10 Years of Missed DTC Credits: How Caregivers Can Recover Them
The Disability Tax Credit has a provision that surprises many people when they first learn about it: if you or a family member has been eligible for the credit for prior years but never claimed it, you can file T1 adjustment requests to recover those credits going back up to 10 years. For caregivers who have been supporting a family member with a disability for years without ever applying for the DTC, this retroactive window can represent a substantial one-time refund.
Why So Many Caregivers Miss the DTC
The most common reason caregivers miss the DTC is simply not knowing it exists. The credit is not well-publicized, and the connection between a family member's disability and a tax benefit for the caregiver is not intuitive. Many people assume the DTC is only for the person with the disability — not for the family members who support them.
Others are aware of the DTC but assume their family member does not qualify, often because they associate the credit with physical disabilities and do not realize it also applies to mental health conditions, cognitive impairments, diabetes, and many other conditions. Still others have tried to apply in the past and were denied — often because the T2201 was not completed using CRA-aligned functional language, not because the person genuinely did not qualify.
How the 10-Year Retroactive Calculation Works
The 10-year window is calculated from the date of the T1 adjustment request — not from the date of diagnosis or the date the DTC application is approved. This means that if you file adjustment requests in 2026, you can potentially recover credits back to 2016, provided the person with the disability was eligible during those years.
The process works in two stages. First, the DTC application must be approved by the CRA, with the Notice of Determination specifying the years of eligibility. Second, T1 adjustment requests are filed for each eligible year within the retroactive window. The CRA reassesses those returns and issues refunds for any years where the credit was not previously claimed.
Every year you wait to apply is potentially a year of credits you can no longer recover. If the person with the disability has been eligible since 2014, filing in 2026 recovers 2016–2025. Waiting until 2027 means 2016 is permanently lost.
What the Retroactive Refund Could Be Worth
The federal DTC credit is worth approximately $1,400 per year in tax savings. Combined with provincial credits, the annual value typically ranges from $1,900 to $2,600 depending on the province. For a 10-year retroactive claim, the total refund could be between $19,000 and $26,000 or more. If the credit was transferred to a supporting person in a higher tax bracket, the value may be higher.
These figures are illustrative estimates only. Actual retroactive refund amounts depend on the individual tax situation, province of residence, and years of eligibility. We provide a more specific estimate during our free eligibility assessment.
What If the DTC Was Previously Denied?
A previous denial does not prevent a new application. Many DTC denials are the result of a T2201 that was not completed using CRA-aligned functional language — not because the person genuinely did not qualify. At My Benefits Canada, we review denied applications at no additional cost, identify what went wrong, and reapply using proper documentation. Many of our clients were previously denied before being approved with our support.
How My Benefits Canada Manages the Retroactive Process
At My Benefits Canada, retroactive tax adjustments are included as part of our standard service. After your DTC application is approved, we file T1 adjustment requests for all eligible previous tax years. The CRA then reassesses those returns and issues any refunds directly to you. Our fee is 25% of the retroactive refund only, collected after approval. If your application is not approved, you pay nothing.
Start Your Assessment
Start your free eligibility assessment to find out how much you may be entitled to recover retroactively — and how many years of credits may be available to you.