CRA Medical Expenses Carry Forward in Canada: What You Can (and Cannot) Claim
If you are searching for "CRA medical expenses carry forward," the key point is this: CRA does not offer an open-ended carry-forward rule for the Medical Expense Tax Credit (METC).
Instead, you can claim eligible medical expenses paid in any continuous 12-month period ending in the tax year you are filing, as long as those same expenses were not already claimed by you or anyone else for a previous year. That timing choice is where most taxpayers create better results.
Quick Answer: Can You Carry Forward Medical Expenses?
For the METC, you generally cannot keep carrying expenses forward year after year like a loss pool.
What you can do is:
- choose a 12-month claim period ending in the current tax year
- include eligible expenses paid in that selected 12-month window
- make sure those same expenses were not already claimed by you or anyone else for a previous year
- claim on line 33099 for yourself, your spouse or common-law partner, and children under 18, or line 33199 for certain other dependants, where applicable
The governing framework comes from:
How the 12-Month Window Actually Works
You can select any continuous 12-month period, as long as it ends in the tax year you are filing and the expenses were not already used in a previous year's claim.
Example for a 2026 return:
- valid period: July 1, 2025 to June 30, 2026
- also valid: January 1, 2026 to December 31, 2026
- not valid: a period ending in 2025 for the 2026 return
This is why people often describe METC timing as a "carry forward" even though it is really a claim-period selection rule.
What You Cannot Carry Forward
Common misconception: "I will save this receipt for a future year if my current claim is too small."
What actually happens:
- if an expense falls outside your chosen 12-month period, it is not included in that return
- if an expense has already been used in a prior METC claim period, you cannot claim it again
- if an expense was reimbursed or reimbursable through a PHSP/HSA, you generally cannot also claim that amount for METC
Choosing the Best 12-Month Period
Because the METC threshold depends on net income, period selection can materially change your claim value.
For line 33099, the threshold is based on the claimant's net income. For line 33199, the threshold is based on the dependant's net income.
The threshold is the lesser of:
- 3% of net income
- CRA's annual fixed threshold amount for the year
A practical approach is to compare two or three possible 12-month windows before filing.
| Option | 12-Month Period | Eligible Expenses | Estimated Threshold | Amount Above Threshold |
|---|---|---|---|---|
| A | Jan 1, 2026 - Dec 31, 2026 | $4,200 | $2,600 | $1,600 |
| B | Jul 1, 2025 - Jun 30, 2026 | $5,150 | $2,600 | $2,550 |
In this simplified example, Option B produces a larger claim base.
PHSP/HSA Interaction: No Double Claims
If you are incorporated and also using a Health Spending Account, this rule matters:
- amounts reimbursed or reimbursable through a PHSP/HSA are generally not claimable again under METC
So for each receipt, decide one path:
- corporate reimbursement through PHSP/HSA, or
- personal METC claim (if not reimbursed)
The fuller CRA rule is narrower than a blanket ban: a reimbursed amount is generally excluded unless the reimbursement must be included in income and is not deductible in computing taxable income. That exception does not usually change the result for ordinary PHSP reimbursements, but it is part of the legal rule.
For a side-by-side savings framework, see METC vs health spending account.
Example: Incorporated Owner With Mixed Claims
An incorporated owner has $4,800 of eligible expenses in the year:
- $2,900 reimbursed through PHSP
- $1,900 paid personally and not reimbursed
Only the unreimbursed $1,900 can be tested against the METC threshold. The reimbursed $2,900 is already handled through the corporate health plan route.
If you need a rules-first PHSP overview, see CRA rules for health spending accounts.
Common Filing Mistakes
- assuming METC uses an unlimited carry-forward model
- mixing reimbursed PHSP expenses into METC totals
- choosing a 12-month period without comparing alternatives
- forgetting to keep clear date-paid records for each receipt
Final Note
For many incorporated business owners, the "carry forward" question is really a planning question: should this expense be handled personally via METC or corporately via a compliant PHSP.
When expenses are recurring or material, that decision can change your after-tax outcome significantly. A simple year-end worksheet that flags date paid, reimbursement status, and claim path can prevent costly double-claim and timing errors.