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RRSP calculator

See your contribution room, the exact refund your contribution earns at your income and province, and what that money grows into by retirement.

Room = 18% of this, capped at $32,490.

25 yrs
6%
Your estimated tax refund
$3,592
Contribution room
$17,100
Contributing
$12,000
Effective savings
29.9%

Contributing $12,000 lowers your taxable income, returning roughly $3,592 at tax time — so it effectively costs you $8,408 out of pocket.

What this contribution becomes
$51,502

in 25 years at 6% — growing completely tax-sheltered.

RRSP withdrawals are taxed as income in retirement, so the real benefit is deferring tax from your high-earning years to (usually) a lower-income retirement — plus decades of tax-free compounding along the way.

The short answer

RRSP room = 18% of last year's earned income, capped at $32,490 (2025), plus carry-forward. Your refund = contribution × marginal rate, and growth inside the account is tax-sheltered until you withdraw.

RRSP vs TFSA vs FHSA

RRSPTFSAFHSA
Tax deduction nowYesNoYes
Tax-free withdrawalsNo — taxed as incomeYesYes (first home)
Room restored after withdrawalNoYes, next yearNo
Annual limit18% of income (max $32,490)$7,000$8,000
Best forHigh earners deferring taxFlexibility, lower earnersFirst-time buyers

Frequently asked questions

How much RRSP room do I have?

Your annual room is 18% of your previous year's earned income, up to a yearly maximum ($32,490 for 2025), minus any pension adjustment. Unused room carries forward indefinitely, so your real limit is often much larger — check your CRA Notice of Assessment for the exact figure.

How much tax will an RRSP contribution save me?

Your refund equals your contribution multiplied by your marginal tax rate. Someone in a 40% bracket who contributes $10,000 gets roughly $4,000 back, meaning the contribution effectively costs $6,000. The higher your income, the more valuable the deduction.

RRSP or TFSA — which should I use first?

As a rule of thumb, favour an RRSP when your current tax rate is higher than the rate you expect in retirement (typically higher earners), and a TFSA when it's lower or similar (typically lower earners and the young). A TFSA also offers more flexibility, since withdrawals aren't taxed and room is restored the following year.

What happens if I over-contribute to my RRSP?

You get a $2,000 lifetime cushion with no penalty. Beyond that, the CRA charges 1% per month on the excess until you withdraw it, so it's worth confirming your room before making a large contribution.

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Disclaimer: This article is for informational purposes only and does not constitute financial, tax, or legal advice. Information may be simplified, incomplete, or out of date. Consult a licensed professional before making financial decisions. VaultNerd may receive compensation from partners featured on this site — this does not influence our editorial content.
Written by
The VaultNerd Team

Researching and writing about Canadian registered accounts and retirement since 2026.

Cite this page

RRSP Calculator: Contribution Room & Tax Refund — VaultNerd” — VaultNerd, https://www.vaultnerd.com/tools/rrsp-calculator, updated August 2026.

Sources
  • CRA — RRSP contribution limits and deduction room
  • CRA — RRSP over-contribution rules and the $2,000 cushion