RRSP Contribution Deadline and Limit in Canada 2026: What You Need to Know

The RRSP deadline for the 2025 tax year was March 2, 2026, and that window has closed. Contributions you make now count toward your 2026 tax year, with a deadline of March 2, 2027. Your personal contribution limit is 18% of your prior year's earned income up to the CRA's annual ceiling of $33,810 for 2026, plus any unused room carried forward from past years — and the exact figure is printed on your Notice of Assessment.

That's the short version. The longer version matters because the deadline is the easiest part of the RRSP to get right, and the limit is the easiest part to get wrong.

The RRSP Contribution Deadline, Plainly

The RRSP contribution year doesn't end on December 31 the way most tax items do. You get an extra 60 days into the following calendar year to make contributions that still count against the prior year's income.

For the 2025 tax year, that deadline landed on March 2, 2026 — the 60-day mark fell on Sunday, March 1, so the Canada Revenue Agency moved it to the next business day. That window is now closed. Anything you put into an RRSP after that date is a 2026 contribution.

For the 2026 tax year — the return you file in spring 2027 — the deadline is March 2, 2027, again because March 1 falls on a Sunday. The CRA publishes the current year's date each fall on its RRSP contributions page, and it's worth confirming rather than assuming.

There's no requirement to wait for the deadline. Contributions made in January 2026 and contributions made on March 2, 2027 are both deductible against 2026 income, but the January dollars have fourteen extra months of tax-sheltered growth behind them. The late-February rush is a habit, not a rule.

Why so many people file in the last two weeks

Statistics Canada's data on registered savings shows roughly 6.2 million Canadians contributed to an RRSP in a recent contribution year, with a median contribution of about $3,800 — a figure that has stayed remarkably flat for a decade. The pattern behind that median is familiar: money gets found in February, not budgeted in June. Spreading contributions monthly through a pre-authorized transfer removes the scramble entirely and smooths out the price you pay for whatever you're buying inside the plan.

How Your Personal Limit Is Calculated

Your RRSP deduction limit is built from three pieces:

Eighteen percent of last year's earned income. Earned income for RRSP purposes includes employment income, net self-employment income, net rental income, and certain support payments. It does not include investment income — dividends, interest, and capital gains build no RRSP room at all.

Capped by the CRA's annual dollar ceiling. For 2026 that ceiling is $33,810, up from $32,490 in 2025 and $31,560 in 2024. The CRA indexes this figure annually to the growth in the average industrial wage, which is why it climbs a little each year. Reaching the 2026 ceiling required roughly $187,800 of 2025 earned income.

Minus your pension adjustment, plus unused room. If you belong to a registered pension plan — common across London's hospital network, the school boards, the city, and Western University — a pension adjustment reported in box 52 of your T4 reduces the following year's RRSP room. Someone in a strong defined benefit plan can see their new room fall to a few thousand dollars, which surprises people who assumed the 18% figure applied to them.

The number that governs you is the "RRSP deduction limit" line on your most recent Notice of Assessment, or the same figure inside My CRA Account. That line already reflects your pension adjustment and your carry-forward. It is the only number worth acting on.

Unused Room Never Expires

Contribution room you don't use rolls forward indefinitely. There is no deadline on it and no penalty for leaving it idle.

This matters more than it sounds. Statistics Canada has reported that Canadians collectively hold well over $1 trillion in unused RRSP room, with the median tax filer carrying tens of thousands of dollars in available space. Someone who has worked steadily for twenty years while contributing modestly can easily have $80,000 or more sitting available.

Room sitting idle isn't a failure — it's an asset with a timing question attached. A deduction claimed in a year when your marginal rate is 29.65% is worth roughly half as much as the same deduction claimed at Ontario's top combined rate of 53.53%.

A related lever gets overlooked: you don't have to claim the deduction in the year you contribute. You can put money in this year, let it grow, and carry the deduction forward to a year when your income is higher. That's genuinely useful for someone with variable income, a business owner deciding between salary and dividends, or an employee expecting a promotion.

"The deadline is the easy part — it's on the calendar. What I see cost people real money is contributing in a year when they're in a low bracket, when the same dollars would have been worth far more claimed two years later."

— Marc Pineault, retirement planner in London, Ontario

A Worked Example: Catching Up on $60,000 of Room

Consider a London couple in their late fifties with a combined portfolio of about $850,000 — roughly $520,000 in RRSPs, $180,000 in TFSAs, and $150,000 in a non-registered account. One spouse sells a rental property and reports $95,000 of taxable capital gain, pushing their taxable income for the year to about $210,000. They have $60,000 of unused RRSP room built up over fifteen years.

Here's the arithmetic on using $60,000 of that room in the high-income year:

• Income before the deduction: $210,000. In Ontario, income above roughly $180,000 sits in a combined federal-provincial bracket near 48.29%, and above $253,414 the top rate of 53.53% applies.
• Deduction claimed: $60,000, pulling taxable income down to $150,000.
• Tax relief at the brackets crossed: the top $30,000 of the deduction comes off income taxed near 48.29%, and the next $30,000 comes off income taxed near 43.41%. That's roughly $14,487 plus $13,023, or about $27,510 in combined tax reduced.
• Effective rate of relief: about 45.9% on the $60,000.

Now the comparison. Had the same $60,000 been contributed evenly across earlier years when taxable income sat near $70,000 — a bracket of roughly 29.65% — the relief would have been about $17,790. The difference in favour of waiting is roughly $9,700, purely from timing.

The arithmetic doesn't run one direction forever. That $580,000 in RRSPs keeps compounding, and at 71 it converts to a RRIF with mandatory minimum withdrawals that start at 5.28% of the balance and climb every year after. A large RRSP built by deferring aggressively can push retirement income high enough to trigger the Old Age Security recovery tax, which begins at $95,323 of net income for the 2026 tax year. Whether to front-load deductions or defer them is a question about your whole income curve, not just this year's bracket — which is the reasoning behind both the RRSP meltdown guide and the RRIF withdrawal strategy guide. You can also run your own numbers using the free retirement planning calculators.

These figures are illustrative arithmetic on assumed brackets, not a projection of any particular person's result.

Overcontributions and the $2,000 Cushion

The CRA allows a lifetime overcontribution buffer of $2,000 before penalties apply. Past that point, the excess attracts a 1% per month penalty tax for every month it stays in the plan, and you're expected to file a T1-OVP return reporting it.

Overcontributions are more common than the rules suggest, usually for three reasons:

Multiple accounts, no running total. Contributions to a group RRSP at work, a spousal RRSP, and an individual plan all draw on the same limit. The plans don't talk to each other.

A pension adjustment that went unread. The T4 box 52 figure reduces next year's room, and someone contributing 18% of salary out of habit can drift over without noticing.

Employer matching counted as free. Employer contributions to a group RRSP use your room, the same as your own.

If you suspect you've gone over, the fix is to check your Notice of Assessment against your actual contribution records before the calendar year ends, rather than discovering it when the CRA writes.

The Age 71 Deadline

One RRSP deadline has no extension: you cannot contribute to your own RRSP after December 31 of the year you turn 71. By that date the plan must be converted to a RRIF, used to buy an annuity, or collapsed and taken as cash — with the cash option taxed in full in one year, which is almost always the least appealing of the three.

Two details around that date are worth knowing. If you still have room and you're turning 71, the contribution must be made by December 31 of that year, not by the following March. And if you have a younger spouse, you can keep contributing to a spousal RRSP until the end of the year they turn 71, provided you still have deduction room — one of the few ways RRSP contributions continue past your own cutoff.

The age 71 conversion also interacts with government benefits. Once RRIF minimums begin, that income counts toward the OAS clawback threshold, and it stacks on top of whatever CPP and OAS you're already drawing. Deciding when to start those benefits is a separate but connected question, covered in the CPP timing guide. The federal government's public pensions pages set out the current CPP and OAS rules and payment amounts.

Where the Real Decision Sits

Meeting the deadline is administration. The question with money attached is which year your deduction belongs in, how much room to leave for later, and what your RRSP will look like at 71 when withdrawals stop being optional.

For an Ontarian earning a steady $75,000 with no pension, the answer is usually simple: contribute regularly, claim the deduction, move on. For a business owner with lumpy income, a professional approaching peak earnings, or a couple with $500,000-plus already inside registered accounts, the timing question is worth genuine thought — because the same $60,000 of room can be worth $17,800 or $27,500 depending only on when it's claimed.

Marc Pineault, a retirement planner in London, Ontario, works with people across southwestern Ontario on exactly this kind of sequencing — how contributions, withdrawals, CPP, OAS and RRIF minimums fit together across a whole retirement rather than a single tax year.