How RRSP Contributions Save You Tax
When you contribute to an RRSP, you receive a deduction from your taxable income equal to the amount you contributed. This reduces your tax bill at your marginal rate — the rate you pay on the last dollars you earn. If you are in a 43% combined federal and provincial tax bracket, every $1,000 you contribute to your RRSP reduces your taxes by approximately $430. That refund comes back to you when you file your tax return.
The key insight is that the tax savings are not a bonus — they are a deferral. You will eventually pay tax when you withdraw from your RRSP in retirement. The strategy works because most Canadians are in a lower tax bracket in retirement than during their peak earning years. Contributing at 43% and withdrawing at 26% means you permanently keep the difference.
How Your RRSP Contribution Limit Is Calculated
Your RRSP contribution limit for 2026 is the lesser of 18% of your 2025 earned income or the 2026 dollar limit of $32,490, plus any unused RRSP room carried forward from prior years, minus any pension adjustment reported by your employer. The CRA tracks your available room and shows your current limit on your Notice of Assessment and in your CRA My Account. Always verify your exact limit with the CRA before contributing, especially if you have unused room from previous years.
The RRSP Contribution Deadline
The RRSP contribution deadline for the 2025 tax year is March 3, 2026. Contributions made between January 1, 2026 and March 3, 2026 can be applied to either your 2025 or 2026 tax return — your choice. Most Canadians apply them to 2025 to get the refund sooner. Missing this deadline means you cannot claim the deduction for the 2025 tax year, though unused room continues to carry forward indefinitely.
Frequently Asked Questions
Should I contribute to an RRSP or TFSA first?
The general rule: if you expect your income in retirement to be lower than your income now, prioritize the RRSP — you get the deduction at a high rate and withdraw at a lower rate. If you expect similar or higher income in retirement (pension, rental income, CPP/OAS), the TFSA is often better since withdrawals are completely tax-free and do not affect income-tested benefits. For most middle-income Canadians earning $60,000–$120,000, a combination of both is the optimal strategy. Our RRSP vs TFSA comparison page goes deeper on this decision.
What is a spousal RRSP and how does it save tax?
A spousal RRSP allows a higher-income spouse to contribute to an RRSP in their partner's name. The contributor gets the tax deduction (reducing their higher tax bill), while the account grows in the lower-income spouse's name. When funds are withdrawn in retirement, they are taxed as the lower-income spouse's income, which is typically taxed at a lower rate. This strategy is especially valuable when one spouse earns significantly more than the other, as it reduces the couple's combined tax bill in retirement by equalizing retirement income between them.
What is the Home Buyers' Plan and how much can I withdraw?
The Home Buyers' Plan (HBP) allows first-time home buyers to withdraw up to $60,000 from their RRSP tax-free to put toward the purchase of a qualifying home. If you and your spouse are both first-time buyers, you can each withdraw $60,000 for a combined total of $120,000. The withdrawn funds must be repaid to your RRSP over 15 years beginning two years after the withdrawal year. If you miss a repayment installment in any year, that installment is added to your taxable income for that year. The FHSA is now available as another option for first-time buyers and may be more advantageous in some cases.
Can I over-contribute to my RRSP?
Yes, but there is a lifetime over-contribution buffer of $2,000 that the CRA permits without penalty. Any over-contribution beyond $2,000 is subject to a 1% per month penalty tax on the excess amount. If you accidentally over-contribute, you should withdraw the excess as soon as possible to stop the penalty from accumulating. You can also leave up to $2,000 over-contributed intentionally — it does not earn a deduction but continues to grow tax-sheltered inside the RRSP. Always check your contribution limit on your most recent Notice of Assessment before contributing.
What happens to my RRSP when I turn 71?
You must convert your RRSP to a RRIF (Registered Retirement Income Fund) or annuity by December 31 of the year you turn 71. You cannot make new RRSP contributions after age 71 (though you can contribute to a spousal RRSP until your spouse turns 71, as long as you have earned income and RRSP room). Once converted to a RRIF, you must withdraw a minimum amount each year based on your age — these withdrawals are fully taxable as income. Use our RRIF Withdrawal Calculator to estimate your minimum withdrawals.
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