Disability Tax Credit for Mental Health: Eligibility and Form T2201

You can qualify for the Disability Tax Credit for mental health if a severe, prolonged impairment markedly restricts your everyday mental functioning, or if several smaller limitations combine to that same level. The credit focuses on how a condition affects your daily life, not on the diagnosis itself. For the 2025 tax year, the federal disability amount is $10,138, which produces roughly $1,521 in federal tax savings, with a provincial credit added on top.¹ Approval also opens the door to the Registered Disability Savings Plan, the Child Disability Benefit, and other linked programs, so the financial impact often runs far beyond the annual credit.

The Ten Mental Functions the CRA Recognizes

The CRA identifies ten categories of mental functions necessary for everyday life. You do not need to be impaired in all of them. A marked restriction in even one can qualify you, provided the impairment is severe and has lasted, or is expected to last, at least 12 continuous months.² The categories are:³

Adaptive functioning: personal care, routine tasks, going into the community, expressing basic needs.
Attention: awareness of danger and basic impulse control.
Concentration: focusing on a simple task and retaining short-term information.
Goal-setting: making and carrying out simple plans, or initiating everyday tasks.
Judgment: making decisions about your own welfare, recognizing risks of exploitation, understanding consequences.
Memory: remembering personal information, things of importance, or simple instructions.
Perception of reality: distinguishing reality from delusions or hallucinations.
Problem-solving: identifying everyday problems and carrying out solutions.
Regulating behaviour and emotions: responding appropriately for the situation, controlling mood to prevent harm.
Verbal and non-verbal comprehension: understanding spoken language, written language, or social cues.

Mental health conditions typically cross several of these. Severe depression often impairs concentration, goal-setting, and adaptive functioning at the same time. Schizophrenia frequently touches perception of reality, judgment, and behaviour regulation. The CRA looks at the functional impact across whichever categories apply to your situation.

What “Markedly Restricted” Actually Means

You are markedly restricted if you are unable to perform the mental function, or if it takes you an inordinate amount of time compared with someone your age without the impairment. That restriction must be present all or substantially all of the time, which the CRA interprets as at least 90%, even with therapy, medication, and any assistive supports.⁴

Complete inability is not required. If you can technically manage a task but need three times longer than a peer, or need constant supervision to do it safely, that counts. One detail applicants miss: the CRA measures your functioning after treatment. If medication controls your symptoms so well that you function normally most of the time, you likely will not qualify. If you still struggle significantly despite consistent treatment, the restriction is measured at that medicated baseline.

The Cumulative Effect Path

If no single mental function is markedly restricted on its own, you may still qualify through the cumulative effect rule. It applies when you have significant limitations in two or more categories that, taken together, equal the severity of a marked restriction in one.⁵ The combined limitations must still be present at least 90% of the time and last, or be expected to last, at least 12 months.

This path matters a great deal for mental health claims. Someone with moderate memory problems, moderate difficulty with goal-setting, and moderate trouble regulating emotions might not meet the marked threshold in any single category. The combined weight of those three can. The rule also allows mixing mental limitations with physical ones such as walking, dressing, and feeding, so mixed impairments can qualify here too.

How Much the Credit Is Worth

The DTC is non-refundable, meaning it reduces tax you owe but does not generate a refund on its own if you owe nothing.⁶ Your federal savings equal the disability amount multiplied by the lowest federal rate. For 2025, that is $10,138 at 15%, or about $1,521. For claimants under 18, an additional supplement of $5,914 brings the combined federal disability amount to $16,052.¹

Every province and territory adds its own disability credit calculated using provincial rates. Combined federal and provincial savings vary by where you live but often exceed $2,000 per year. If you do not owe enough tax to use the full credit, the unused portion can transfer to a supporting family member.

Who Can Certify Your Application

For mental functions, three types of practitioners are authorized to complete the medical portion of Form T2201: a medical doctor, a nurse practitioner, or a psychologist.⁷ A psychiatrist qualifies as a medical doctor. The practitioner must have direct knowledge of your condition and its effects on your daily life.

Choose carefully. A family doctor who has treated you for years and seen your struggles firsthand often produces stronger descriptions than a specialist working from a file. If a psychologist has conducted formal cognitive assessments, their data adds significant weight.

Filling Out Form T2201 So It Succeeds

Form T2201 is the only application document. Part A is filled out by the applicant with personal information, including your Social Insurance Number and, ideally, the name of any supporting family member who may claim the unused portion of your credit. Adding a family member later requires a separate written request to the CRA.⁸

Part B is where mental health applications succeed or fail. The practitioner must describe how your impairment specifically affects daily functioning using concrete examples. “Patient has major depressive disorder” tells the reviewer nothing about your limitations. A stronger description reads: “Patient cannot remember simple instructions given minutes earlier, requires daily prompting for basic hygiene, and is unable to initiate routine tasks like preparing meals without direct supervision.” That version maps directly onto the recognized categories of memory, adaptive functioning, and goal-setting.³

Your practitioner should specify the date the marked restriction began, confirm the restriction is present at least 90% of the time, and note that limitations persist despite treatment. If you use psychological interventions, live in a supervised setting, or rely on a caregiver, those details strengthen the claim. Bring your treatment history and any formal assessment results to the appointment so the practitioner has the raw material.

Submitting and Waiting

The CRA now processes applications largely through its digital portal. If you complete Part A online through CRA My Account, you receive a reference number your practitioner uses to submit Part B electronically.⁹ Without a reference number, your practitioner can still fill out Part B digitally, but they must print and sign it, and you mail the paper form to your regional tax centre.

Processing times vary. The CRA has historically aimed at about eight weeks for standard applications, with complex files running longer.¹⁰ During the review, the CRA may send your practitioner a questionnaire asking for more specific examples of restricted judgment, problem-solving, or other functions. A prompt response keeps the file moving. Once done, the CRA issues a notice of determination listing the tax years for which you’re approved. Keep copies of everything.

Claiming Back Years You Missed

If your impairment began well before you applied, you can claim the credit retroactively for up to ten previous tax years.¹ That window comes from subsection 152(4.2) of the Income Tax Act, which allows reassessment beyond the normal period when a taxpayer applies within ten calendar years after the end of the year in question.¹¹

The easiest route is to check the box on T2201 asking the CRA to automatically adjust your prior returns. If you missed that step, you can still request adjustments in writing or through the “Change my return” feature in My Account. A full ten-year retroactive claim can return over $15,000 once provincial amounts are included. The pivotal detail is the date your practitioner identifies as the onset of the marked restriction. If your practitioner is unsure, use the earliest date the clinical record supports.

Transferring the Credit If Your Income Is Low

Because the DTC is non-refundable, it only helps you directly if you owe income tax. If your income is too low, the unused portion can transfer to a supporting family member who does owe tax and who provides you with at least one basic necessity of life — food, shelter, or clothing.¹

The list of eligible relatives is broader than most people expect. It includes your spouse or common-law partner, parents, grandparents, children, grandchildren, siblings, aunts, uncles, nieces, and nephews, along with the same relatives of your spouse or common-law partner. If more than one supports you, they can split the credit, but the total cannot exceed the year’s maximum disability amount. Name the supporting family member in Part A when you first apply to avoid a later written request.

If the CRA Denies You

Mental health applications are denied at a higher rate than many physical impairments, largely because functional limitations are harder to describe in the concrete terms the CRA expects. You have three options after a denial.¹⁰

Request an informal review by sending new or updated medical information through My Account or by mail. A more detailed letter from your practitioner, with functional examples matched to the CRA’s categories, often changes the outcome.
File a formal income tax objection within 90 days of the notice of determination. This triggers a review by the CRA’s Appeals Division, which operates independently from the unit that made the initial decision.
Appeal to the Tax Court of Canada if the objection is also denied. Connecting with a disability advocacy organization or tax professional at this stage is worth the effort.

The most common reason mental health applications fail is vague medical language. If your practitioner wrote that you “have difficulty with daily activities” without specifying which categories are affected, how severely, and how often, a resubmission with sharper wording often succeeds where the original did not.

What DTC Approval Unlocks

The annual credit is not the whole picture. DTC approval is the qualifying step for several federal programs that can shift your finances well beyond the yearly tax reduction.

Registered Disability Savings Plan (RDSP): you must be DTC-approved to open one. This long-term savings vehicle receives federal grants and bonds that can add up to tens of thousands of dollars over time.¹²
Child Disability Benefit: if your child is DTC-approved, your family may qualify for this tax-free monthly payment, calculated as part of the Canada Child Benefit.¹³
Canada Workers Benefit disability supplement: low-income workers approved for the DTC may qualify for an enhanced refundable credit through the Canada Workers Benefit.

These linked programs are a strong reason to pursue the DTC even if your current tax bill is small. Losing DTC eligibility, for instance if a CRA review concludes the condition has improved, can affect these connected programs, so keep your medical documentation current and respond promptly to any CRA review letter.

1
Canada Revenue Agency. Claiming the Credit – Disability Tax Credit
2
Justice Laws Website. Income Tax Act – Section 118.4
3
Canada Revenue Agency. Mental Functions Eligibility – Disability Tax Credit
4
Canada Revenue Agency. Income Tax Folio S1-F1-C2, Disability Tax Credit
5
Canada Revenue Agency. Cumulative Effect Eligibility – Disability Tax Credit
6
Canada Revenue Agency. Disability Tax Credit
7
Canada Revenue Agency. Disability-Related Information 2025
8
Canada Revenue Agency. T2201 Disability Tax Credit Certificate
9
Canada Revenue Agency. Disability Tax Credit – How to Apply
10
Canada Revenue Agency. CRA’s Review and Decision – Disability Tax Credit
11
Justice Laws Website. Income Tax Act – Section 152
12
Canada Revenue Agency. Eligibility and Contributions – RDSP
13
Canada Revenue Agency. Child Disability Benefit