RRSP Contribution Room Calculator

Making the Most of Your RRSP Contribution Room

An RRSP contribution doesn't eliminate tax — it defers it. You get a deduction now (reducing your taxable income) and pay tax on withdrawals later. The strategy works best when your marginal rate today is higher than it will be in retirement. Someone in a 43% combined bracket contributing to an RRSP and expecting to withdraw at 28% effectively gets a 15-cent subsidy on every dollar contributed, compounding tax-free for decades.

The RRSP deadline and carry-forward

The contribution deadline for claiming a deduction on your 2025 tax return is March 2, 2026 (60 days after year-end). Contributions made after the deadline can still be made — your room never expires — but the deduction moves to a future return. Unused room accumulates indefinitely. If you've never maxed your RRSP, your carry-forward room could be substantial; the exact amount appears on your most recent Notice of Assessment (NOA) or in CRA My Account.

Over-contribution penalty

Exceeding your RRSP limit triggers a 1% per month penalty tax on the excess above a $2,000 buffer. This buffer is not a free contribution — withdrawing the excess doesn't generate a deduction and you still pay tax on it when withdrawn. If you believe you've over-contributed, file a T1-OVP return promptly to limit penalty accumulation.

Spousal RRSPs

You can direct contributions to a spousal RRSP using your own contribution room. You claim the deduction, but the funds are in your spouse's account and eventually taxed in their hands — useful if your spouse will be in a lower tax bracket at withdrawal. The attribution rules require the funds to remain in the spousal RRSP for three calendar years (not three years from contribution) before withdrawal to avoid income being attributed back to the contributing spouse.