RRSP deadline 2027 and how to calculate your refund

RRSP contributions made in the first 60 days of a year can be deducted on the previous year's return. The 60th day after December 31, 2026 is Monday, March 1, 2027: that is the deadline for deductible contributions for the 2026 tax year. In practice, any contribution made between January 1, 2026 and March 1, 2027 can be deducted from your 2026 income, within your available room. Your financial institution usually issues two receipts: one for March to December contributions and one for the first 60 days of the year. Watch processing times: a transfer made on the evening of March 1 may be recorded the next day. Aim a few days early, especially if you contribute through an employer or an advisor. Don't confuse it with the FHSA: the FHSA has no 60-day grace period. To use your 2026 room, the FHSA contribution must be made by December 31, 2026 (see FHSA vs HBP in 2026).

Your 2026 RRSP deduction limit is 18% of your 2025 earned income, up to a maximum of $33,810, minus your pension adjustment (PA) if you belong to an employer pension plan, plus unused room from previous years. The exact amount appears on your 2025 notice of assessment (RRSP deduction limit statement) and in your CRA My Account. • $60,000 of earned income in 2025 creates $10,800 of new room (18%). • You need about $187,833 of earned income to reach the $33,810 maximum. • Unused room carries forward indefinitely. An overcontribution of more than $2,000 above your room is subject to a tax of 1% per month on the excess until it is withdrawn or absorbed by new room.

An RRSP contribution is deducted from your taxable income both federally and in Quebec (line 20800 of the federal return, line 214 of the Quebec TP-1). Your tax saving is therefore roughly: Contribution × your combined marginal rate (Quebec + federal) For a Quebec resident, federal tax is reduced by the 16.5% Quebec abatement. Here are the 2026 combined marginal income tax rates (before other credits and reductions): • Up to $54,345: 25.69% (14% Quebec + 11.69% federal) • $54,345 to $58,523: 30.69% • $58,523 to $108,680: 36.12% • $108,680 to $117,045: 41.12% • $117,045 to $132,245: 45.71% • $132,245 to $181,440: 47.46% • $181,440 to $258,482: about 49.97% • Over $258,482: 53.31% These rates come from Revenu Québec's 2026 tables (TP-1015.F) and the CRA's T4127. If your contribution drops you into a lower bracket, part of the saving is calculated at each rate.

Estimated tax saving (federal + Quebec) for a contribution deducted in 2026, based on taxable income before the contribution: • $50,000 income, $5,000 contribution: about $1,285 • $60,000 income, $5,000 contribution: about $1,615 (part of the deduction falls below the $58,523 and $54,345 thresholds) • $85,000 income, $8,000 contribution: about $2,889 • $100,000 income, $10,000 contribution: about $3,612 • $150,000 income, $20,000 contribution: about $9,453 These amounts are not necessarily your "refund": that also depends on how much tax was already withheld from your pay. If your withholdings exactly matched your tax, the saving becomes a refund; if you owed tax, it reduces your balance. To model your situation, use our RRSP vs TFSA calculator, and to see the effect on your paycheque, the Quebec net pay calculator.

The RRSP gives you a deduction today, but withdrawals are taxed later. The TFSA gives no deduction, but withdrawals are tax-free. The general rule: • If your marginal rate today is higher than the one you expect in retirement, the RRSP wins. • If your rate is low today (for example under $54,345), the TFSA is often as good or better, and more flexible. • RRSP withdrawals can reduce some retirement benefits (the Guaranteed Income Supplement, for example), which favours the TFSA for modest incomes. A common strategy: contribute to the RRSP, then put the refund into a TFSA (2026 limit of $7,000, cumulative room of $109,000 for someone eligible since 2009).

• Contributing without checking your room: look at your notice of assessment or My Account before a large contribution. • Forgetting the pension adjustment: if you have a workplace pension plan, your room is reduced. • Contributing just before an HBP withdrawal: contributions made in the 89 days before a Home Buyers' Plan withdrawal may not be deductible. • Thinking you must deduct everything right away: you can contribute now and carry the deduction forward to a year when your income, and your marginal rate, is higher. • Borrowing to contribute without a repayment plan: an RRSP loan only makes sense if the refund is used to pay it down quickly.