RRSP tax refund calculator Canada

Your refund is your marginal tax rate × the amount you contribute and deduct. An RRSP contribution lowers your taxable income, so the refund is the tax you would otherwise have paid on that top slice of income. A $10,000 contribution by someone earning $90,000 in Ontario saves about $2,965 — roughly a 30% marginal rate — so the contribution really costs about $7,035 after the refund. This calculator runs that math for your province and income.

The deduction comes off the top of your income, so it is taxed (saved) at your highest brackets first. We compute the tax you owe on your full income, then the tax on your income minus the contribution, and the difference is your refund. Because the deduction peels off the top, a large contribution can drop you through several brackets, lowering the average rate saved — this tool applies the actual 2026 combined federal + provincial rates band by band.

No — an RRSP is tax-deferred, not tax-free. You get the refund now, the money grows sheltered, but withdrawals (including in retirement via a RRIF) are taxed as income. The strategy works when your marginal rate at contribution is higher than your rate at withdrawal. See RRSP vs TFSA for when each account wins.

To capture the full benefit, reinvest the refund — top up your TFSA, contribute it back to your RRSP, or pay down debt. If you spend the refund, the RRSP still helped, but the often-quoted "contribute and the refund pays for itself" math assumes you put the refund back to work.

Yes. You can contribute now but claim the deduction later, in a year when your income — and therefore your marginal rate — is higher. This is valuable if you expect a raise, a bonus, or a move into a higher bracket. The contribution grows tax-sheltered in the meantime, and the refund is larger when you finally deduct it.

Your room is 18% of your prior-year earned income, up to an annual maximum (about $33,000 for 2026), plus any unused room carried forward from past years — check your CRA Notice of Assessment for the exact figure. Contributions made in the first 60 days of a year can be deducted on either that year's or the previous year's return.

If your income (and marginal rate) is high now and will be lower in retirement, the RRSP usually wins because you deduct at a high rate and withdraw at a low one. If you are in a low bracket now — early career, or a low-income year — the TFSA is often better, since there is no deduction to "waste". Our RRSP vs TFSA guide and the spousal RRSP strategy cover the details.

It can help. Because the deduction lowers your net income, it can increase income-tested benefits such as the Canada Child Benefit, the GST/HST credit, and (for retirees) reduce the OAS clawback. For some families the benefit boost is worth as much as the tax refund itself.