Canada doesn’t have a joint tax return — every individual files their own return. But being in a married or common-law partnership unlocks a range of credits and strategies that can significantly reduce your combined tax bill. Here’s how to approach tax filing as a couple.
There is no “joint return” in Canada
Unlike the United States, Canadians do not have the option to file a joint return with a spouse or common-law partner. Each person files their own T1 General return separately. However, both returns must be coordinated because:
- You must disclose your spouse/partner’s net income on your return
- Many credits and deductions are calculated based on family net income (both partners combined)
- Several income-splitting opportunities exist that require claiming on the correct partner’s return
Disclosing your spouse’s income
When you file, you must report your spouse’s or common-law partner’s net income on your return (Line 23600 of your T1). This affects the calculation of several credits — most importantly the spousal amount (or “spouse or common-law partner amount”), which can reduce your federal tax if your partner’s income is low.
CRA cross-references both returns, so both partners’ returns should be filed to avoid delays.
Key credits for couples
Spousal amount (Line 30300)
If your spouse or common-law partner earned less than the basic personal amount (~$16,129 in 2026), you can claim the difference as a credit on your return. This effectively transfers unused basic personal amount to the higher earner.
Example: Your partner earned $5,000. Basic personal amount is $16,129. Spousal amount = $16,129 − $5,000 = $11,129. Federal credit value: ~$1,669 (at 15% base rate).
Age amount transfer
If your spouse is 65+ and their income is low enough that they can’t fully use the Age Amount ($8,396 in 2026), they can transfer the unused portion to you.
Disability tax credit transfer
If your spouse has an eligible disability but can’t use the full Disability Tax Credit due to low income, the unused credit can be transferred to you.
Medical expenses
You can claim combined medical expenses for both spouses on one return (whichever partner benefits most from the claim — usually the lower earner, since medical expenses must exceed 3% of net income or $2,635, whichever is less).
Charitable donations
Charitable donations made by both spouses can be combined and claimed by either partner. Because the federal donation credit rate increases to 33% for amounts above $200, combining donations often produces a better credit than claiming separately.
Income splitting opportunities
Spousal RRSP contributions
The higher-earning spouse contributes to an RRSP in the lower-earning spouse’s name. The contributor deducts at their rate; the annuitant withdraws and is taxed at their (lower) rate in retirement. See: Should I contribute to a spousal RRSP?
Pension income splitting
Eligible pension income (RRIF payments after 65, DB pension, certain annuities) can be split up to 50/50 on your tax returns. Use T1032 (Joint Election to Split Pension Income). Neither partner needs to actually transfer money — it’s a paper election only.
Capital gains splitting
Investment income from money gifted to a lower-income spouse is subject to attribution rules — gains are taxed to the higher earner. To legally shift investment income, the lower earner needs to earn money independently or the higher earner must loan money at the prescribed rate (1–5%, adjusted quarterly by CRA).
Rental income splitting
If rental property is jointly owned, income is split proportionally by ownership percentage. Ensure ownership is documented properly (title shows percentage or a co-tenancy agreement exists).
Who should claim specific credits
Claim on the higher-income partner’s return:
- RRSP deductions (at their higher marginal rate — saves more tax per dollar)
- Home office expenses (if both work from home, split by days worked from home)
- Child care expenses — these must be claimed by the lower-income partner (CRA rule), with exceptions for the higher earner in cases of incapacity or full-time student status
Claim on the lower-income partner’s return:
- Child care expenses (usually mandatory on lower earner’s return)
- Medical expenses (claim on the return where they exceed the 3% income threshold)
Common-law couples: when the rules apply
For federal tax purposes, you’re common-law partners if you’ve lived together in a conjugal relationship for 12 continuous months or have a child together. Once you’re considered common-law, all the above spousal credits and rules apply.
You must update your marital status with CRA in the year the relationship begins. Failure to do so can result in retroactive reassessment of benefit payments (GST/HST credit, CCB, etc.).
Frequently asked questions
Can we file our tax returns at different times? Yes. There’s no requirement for both partners to file simultaneously. However, several credits (spousal amount, pension splitting) require both partners’ information to be calculated correctly. Filing together or close together reduces the chance of errors.
We’re both high earners — are there any tax benefits to being a couple? Fewer, but still some. You can split pension income after 65 (which can meaningfully reduce tax if one partner has a DB pension). You can combine charitable donations. And whichever partner is higher on medical expenses in a given year gets a better credit result.
My partner doesn’’t have a SIN or isn’’t a Canadian resident — do I still have to disclose their income? CRA asks for your spouse’s net income even if they’re a non-resident or don’t have a SIN. Report what you know; CRA will process accordingly. If your partner has no Canadian income, their net income is typically zero.
What if we separated during the tax year? Use your marital status as of December 31. If you were separated for 90+ consecutive days by December 31, you file as “separated” for the full year. Credits are recalculated accordingly. If you reunited before December 31, you’re still considered married/common-law.