The disability tax form a doctor fills out is Part B of Form T2201, the Disability Tax Credit Certificate, if you’re in Canada, or the physician’s statement in Part II of Schedule R (Form 1040) if you’re in the United States. Both forms ask the practitioner to describe how a physical or mental impairment limits daily functioning, and both require certification that the condition has lasted or will last at least 12 months. Vague clinical descriptions are the single most common reason these applications stall or get denied, so the detail your doctor writes matters more than the paperwork itself.
Canada: Part B of Form T2201
Form T2201 has two parts. You complete Part A with your personal information and authorization for the Canada Revenue Agency to review the medical details. Your practitioner completes Part B, describing the impairment and its effect on your daily life.1Canada Revenue Agency. Disability Tax Credit – How to Apply The CRA will not process the form unless both parts are done, and you cannot fill out Part B yourself under any circumstances.
The legal basis sits in section 118.3 of the Income Tax Act, which requires a medical practitioner to certify in a prescribed form that the individual has a severe and prolonged impairment whose effects markedly restrict at least one basic activity of daily living, or significantly restrict two or more with a cumulative effect equivalent to a marked restriction.2Justice Laws Website. Income Tax Act RSC 1985 c 1 (5th Supp) – Section 118.3
Which Practitioner Can Sign It
You don’t necessarily need a medical doctor. Several types of practitioners are authorized, each within their own scope:1Canada Revenue Agency. Disability Tax Credit – How to Apply
- Medical doctors and nurse practitioners can certify any impairment category.
- Optometrists certify vision.
- Audiologists certify hearing.
- Occupational therapists certify walking, feeding, and dressing.
- Physiotherapists certify walking.
- Psychologists certify mental functions.
- Speech-language pathologists certify speaking.
If your condition affects more than one area, a medical doctor or nurse practitioner is usually the practical choice because everything fits on a single form. Many practitioners charge a fee for completing the T2201 since the assessment takes time and isn’t covered by provincial health insurance. Ask about the cost before scheduling. You can later claim the fee as a medical expense on your return.1Canada Revenue Agency. Disability Tax Credit – How to Apply
What Part B Asks Your Doctor to Describe
Part B walks the practitioner through specific functional categories, and they address only the ones relevant to your condition:3Canada Revenue Agency. Who Is Eligible – Disability Tax Credit
- Vision (acuity and field of vision)
- Speaking
- Hearing
- Walking
- Eliminating (bowel or bladder functions)
- Feeding
- Dressing
- Mental functions necessary for everyday life
- Life-sustaining therapy
For each category, the practitioner explains how the impairment affects your ability to perform that activity independently, even with medication, therapy, or assistive devices.
The CRA distinguishes between two levels of impairment. A “marked restriction” means you are unable to perform an activity, or take roughly three times longer than someone of similar age without the impairment, all or substantially all of the time. Any single marked restriction qualifies you.3Canada Revenue Agency. Who Is Eligible – Disability Tax Credit A “significant limitation” is less severe on its own, but two or more together can qualify you if their combined effect is equivalent to a marked restriction and they exist together at least 90% of the time. This is why detailed clinical description across every affected area matters, even when no single area is catastrophic.
Life-sustaining therapy is its own category. It applies when you need ongoing therapy to sustain a vital function, such as dialysis, insulin therapy, or chest physiotherapy. The therapy must be required at least twice per week and must average at least 14 hours weekly once you count administering treatment, adjusting dosages, maintaining equipment, and managing therapy-related dietary restrictions. Time spent exercising, traveling to appointments, or recuperating afterward does not count.4Canada Revenue Agency. Life-Sustaining Therapy Eligibility – Disability Tax Credit
Whatever category applies, the practitioner must certify that the impairment has lasted, or is expected to last, for a continuous period of at least 12 months.3Canada Revenue Agency. Who Is Eligible – Disability Tax Credit They also indicate the year the disability began, which determines whether the CRA can apply the credit retroactively to prior tax years.
Getting the Completed Form to the CRA
There are two paths. Digitally, you sign in to CRA My Account, go to “Benefits and credits,” and select “Apply for DTC.” After finishing Part A you receive a reference number to give to your practitioner, who completes Part B through the CRA’s digital portal for medical practitioners. When they submit, the form goes straight to the CRA.1Canada Revenue Agency. Disability Tax Credit – How to Apply On paper, download the current T2201 PDF, open it in Adobe Acrobat Reader 10 or later, complete Part A, give the form to your practitioner for Part B, then mail the finished document to the tax centre listed in the form’s instructions.5Canada Revenue Agency. T2201 Disability Tax Credit Certificate
As of 2025, the CRA’s average processing time for T2201 applications is approximately 14 months, and it runs longer when the medical description is thin and the CRA has to send a supplemental questionnaire.6Canada Revenue Agency. Check CRA Processing Times A practitioner who writes “patient has difficulty walking” instead of explaining the specific limitation and how long each activity takes is practically guaranteeing a delay.
If the CRA Denies Your Application
A denial is not the end. You can call the CRA to discuss the decision, request a review with new or updated medical reports that better describe your functional limitations, or file a formal income tax objection within 90 days of the date on the notice of determination.7Canada Revenue Agency. CRA Review and Decision – Disability Tax Credit Many initially denied applications succeed on review when the practitioner supplies a more detailed description of the functional impact.
United States: The Physician’s Statement on Schedule R
There is no U.S. counterpart as detailed as the T2201. The primary disability tax form a doctor fills out is the physician’s statement in Part II of Schedule R (Form 1040), which supports the Credit for the Elderly or the Disabled under 26 U.S.C. ยง 22.8Office of the Law Revision Counsel. 26 USC 22 – Credit for the Elderly and the Permanently and Totally Disabled
Only one group of filers needs the physician’s statement: people under 65 who retired on permanent and total disability and received taxable disability income during the tax year. Filers 65 or older qualify by age alone. The credit must be claimed on Form 1040 or Form 1040-SR; you cannot use Form 1040-NR.9Internal Revenue Service. Instructions for Schedule R (Form 1040)
What the Physician Certifies
The doctor confirms two things. First, that you cannot engage in any substantial gainful activity because of a physical or mental condition. The IRS treats substantial gainful activity as performing significant duties over a reasonable period for pay, and full-time work at minimum wage or above is considered conclusive proof someone can engage in it. Second, that the disability has lasted or is expected to last continuously for at least 12 months, or is expected to result in death.9Internal Revenue Service. Instructions for Schedule R (Form 1040)
The physician signs on one of two lines. Line A covers a disability that has lasted or is expected to last at least a year. Line B covers a condition with no reasonable probability of improvement. Once signed, the statement generally does not have to be refiled in future years unless the IRS specifically asks for an update.
Other Doctor-Signed Forms You Might Be Thinking Of
A few other U.S. items involve medical documentation but are not the disability tax form itself. The medical expense deduction on Schedule A requires no separate doctor’s form. You claim unreimbursed medical and dental costs above 7.5% of adjusted gross income yourself and keep records in case of audit.10Internal Revenue Service. Publication 502 – Medical and Dental Expenses
ABLE (Achieving a Better Life Experience) accounts, which allow tax-advantaged savings for disability-related expenses, require a licensed physician to certify marked and severe functional limitations if you want to open an account without receiving SSI or SSDI. Starting January 1, 2026, ABLE eligibility expands to individuals whose disability began before age 46, up from the previous threshold of age 26. Enrollment programs generally have you confirm the documentation is on file rather than upload it.
Form SSA-827 is written authorization for the Social Security Administration to collect your medical records for a Social Security Disability Insurance claim. It is not a tax form, but many people encounter it during the same period they’re handling the T2201 or Schedule R. The authorization is valid for 12 months from the date you sign it.11Social Security Administration. Information on Form SSA-827