RRSP Calculator Canada

What the RRSP calculator does

A Registered Retirement Savings Plan is one of Canada’s main tax-advantaged retirement accounts: contributions are deductible, lowering your tax now, and the money grows tax-deferred. The calculator brings together the numbers that matter when you contribute: your room, the refund a contribution might produce, how much room it uses and what it costs after the refund.

How contribution room works

Room is the lesser of 18% of your earned income and the annual dollar limit, $33,810 for 2026, plus unused room carried forward from earlier years, minus any pension adjustment from a workplace plan. People who have not contributed before often have much more room than one year’s figure suggests.

How the tax refund works

A contribution reduces your taxable income, so the tax saved comes off at your marginal rate. That is why the same contribution is worth more in a higher-income year. The calculator multiplies your contribution by the marginal rate you enter.

A worked example

With $100,000 of earned income, room is 18%, or $18,000, below the dollar limit. A $15,000 contribution at a 40% marginal rate produces an estimated $6,000 refund, so it costs $9,000 after the refund and leaves $3,000 of room.

With $200,000 of income the 18% figure, $36,000, is capped at $33,810. Add $10,000 of carry-forward and subtract a $5,000 pension adjustment and room is $38,810. A $15,000 contribution left to grow at 5% for 20 years would be worth about $39,799 before tax on withdrawal.

Why this matters for planning

• Marginal rate timing: contributing in higher-income years and withdrawing in lower-income retirement years can shift income to a lower rate overall.
• Room is limited: contributions more than $2,000 above your room are charged 1% a month on the excess, so knowing your ceiling matters as much as knowing your refund.

RRSP and the bigger retirement picture

An RRSP defers tax rather than removing it: you get a deduction now, the money compounds without annual tax, and withdrawals are taxed later, ideally at a lower rate. Reinvesting the refund, rather than spending it, is where much of the long-term benefit comes from. Depending on your income and goals, a TFSA or FHSA may suit some savings better.

How your province shapes the refund

Contribution room is a federal figure and the same everywhere. The refund is not: the deduction saves tax at your combined federal and provincial marginal rate, so the same contribution returns more in a higher-rate province. Quebec residents claim the deduction on both the federal return and their Revenu Québec return. The province you live in on December 31 decides the rate.

Turning the estimate into a decision

Try a comfortable amount and note the refund and room used, then a larger one and watch the refund grow while your remaining room shrinks. That shows how much to contribute this year and whether to hold some room for a later year when your marginal rate might be higher. You can contribute now and carry the deduction forward to a higher-income year if that saves more.

Common mistakes and planning tips

• Treating the refund as a bonus. It is deferred tax, repaid when you withdraw.
• Over-contributing beyond your room and the $2,000 buffer.
• Claiming the deduction in a low-income year when the saving is small.
• Contributing late; money contributed early compounds tax-deferred for longer.

Forms and where to confirm your room

Your true room is the RRSP deduction limit on your latest CRA notice of assessment, also shown in CRA My Account. Contributions are reported on Schedule 7 with your T1 return, supported by receipts from your financial institution. Use the calculator to plan, then confirm the exact limit before contributing and check significant decisions with a qualified tax professional.

This is general information, not financial advice.

About This RRSP Calculator

Use this RRSP calculator to get an instant, accurate estimate. The figures follow official CRA guidance and every rate and threshold is kept up to date for 2026. Adjust the inputs above to match your situation, or browse all our calculators to plan your next step.