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The RRSP dollar limit is $33,810 for 2026, up from $32,490 for 2025, but hardly anyone’s own rrsp deduction limit lands exactly there. Yours is 18% of last year’s earned income (capped at the dollar limit), plus any unused room, minus any pension adjustment. The next RRSP deadline is early in March 2027.
How is your RRSP deduction limit worked out?
Room comes from earned income, which mostly means pay from a job and profit from self-employment. Every year adds the smaller of two numbers: 18% of the previous year’s earned income, or that year’s dollar limit. Room you didn’t use doesn’t expire. It just piles up, year after year, until you use it.
Then there’s the pension adjustment. If you belong to a workplace pension or a deferred profit sharing plan, the value of what you earned in it comes off your new room, dollar for dollar. So two people on the same salary can end up with very different limits, and the one with the good pension usually has less room.
Don’t calculate this from memory. The number that counts is on your latest notice of assessment, and it’s in your CRA account too. The CRA builds it from your past returns, which is a good reason to file every year on time and to check that its figure matches yours. The CRA’s own page on contributing to an RRSP links to where limits are found and how excess contributions are handled.
The numbers in one place
| Item | Value |
|---|---|
| Dollar limit, 2025 | $32,490 |
| Dollar limit, 2026 | $33,810 |
| Share of earned income | 18% |
| Deadline for the 2025 tax year | March 2, 2026 |
| Deadline rule for later years | 60 days after December 31 |
| Over-contribution buffer | $2,000 |
| Penalty above the buffer | 1% a month |
| Last year to contribute | The year you turn 71 |
Is contribution room the same as the deduction?
No, and this trips up a lot of people. Room is how much you’re allowed to put in. The deduction is the amount you choose to claim on your return, and the two don’t have to happen in the same year. If your income is low this year and you expect a jump, contribute now and hold the claim back. Whatever you don’t claim carries forward.
Picture Priya, a new nurse in Winnipeg, who puts $5,000 into her RRSP in a year when she’s still earning a student-ish wage. If she claims it right away, the refund is small. If she waits until she’s in a higher bracket two years later, the same $5,000 deduction knocks off more tax. Same cash in, bigger payoff.
The saving is the deduction times your marginal rate, so the same $10,000 is worth more to someone in a higher bracket. The marginal tax rate calculator shows what your next dollar of pay is taxed at.
What does a $10,000 contribution save?
Say you earned $90,000 last year, with no pension adjustment and no old room. Eighteen per cent is $16,200, well under the dollar limit, so $16,200 is your room.
Put in $10,000 and claim all of it. The RRSP calculator has income tax dropping from $17,034 to $14,069. That’s $2,965 saved, or 29.6% of what you put in, so the money really cost you $7,035.
Now change one thing. Give the same person a $3,000 pension adjustment and room falls to $13,200. A $20,000 contribution would then sit $6,800 over room. The first $2,000 of that is tolerated, which leaves $4,800 exposed to the 1% monthly charge, or $48 a month until it’s fixed. The tax saving is real, and so is the penalty.
When is the RRSP deadline?
It’s the 60th day of the new year. For the 2025 tax year that was March 2, 2026, so it has gone. For 2026, counting 60 days from January 1, 2027 lands on March 1, 2027, though you should still check the date on the CRA’s important dates page before leaving it to the last afternoon. Money paid in that window can be claimed on either year’s return.
Age sets the other limit. Your own RRSP takes contributions until the end of the year you turn 71. After that you close it, convert it to a RRIF or buy an annuity. If you’re planning that stage, the retirement calculator is a decent place to start.
What if you’ve put in too much?
First, don’t panic. Going over your room by up to $2,000 draws no penalty, though you can’t deduct that slice. Beyond the buffer, the monthly charge starts, so the fix is to take the extra out or to let new room catch up with you. Many people only find out at tax time, when the notice of assessment shows a limit lower than they assumed. A few minutes checking the number before you contribute is cheaper than a few bucks of penalty every month.
Where people go wrong
- They trust an old article for the dollar limit. The figure changes every year, and some sites print numbers before the CRA does.
- They forget that withdrawals are taxed as income. The RRSP withdrawal tax calculator shows the withholding on a lump sum.
- They skip the TFSA. If your income is low today it may suit you better, and the TFSA calculator lets you compare.
- They treat our results as exact. The calculators here don’t model every credit, so read them as estimates.
Where the numbers come from
The dollar limits, the 18% rule, the $2,000 buffer, the penalty rate and the age rule come from Canada Revenue Agency pages on RRSP limits and important dates, read in September 2026. The calculator results use 2026 federal and Ontario tax data. We aren’t a government service and we don’t speak for one.
Frequently asked questions
What is the RRSP limit for 2026?
The dollar limit is $33,810. Your own limit starts with the lesser of that and 18% of last year's earned income, then adds unused room and subtracts any pension adjustment.
Where do I find my personal limit?
On your latest notice of assessment, and in your CRA account online.
What was the deadline for the 2025 tax year?
March 2, 2026. Contributions made from March 4, 2025 up to that date counted for the 2025 return.
What happens if I put in too much?
The CRA tolerates $2,000 over. Above that it charges 1% a month on the excess until you take it out.
Do I have to claim the whole contribution this year?
No. An unclaimed amount carries forward, so you can use it in a year when your tax rate is higher.