Canada RRSP 2027 Contribution Room & Carry-Forward Calculator

The 18% × Earned Income Rule

RRSP contribution room is 18% of the PRIOR year's earned income (employment, self-employment, rental, alimony received), capped at the annual CRA limit. For 2027, that hard cap is C$32,490 (up from C$31,560 in 2026). Earned income for self-employed includes net business income after expenses but before personal taxes. Investment income (dividends, interest, capital gains) does NOT generate RRSP room.

Pension Adjustment Reduces Room

If you participate in an employer pension plan (DB, DC, or DPSP), your T4 Box 52 shows a Pension Adjustment (PA) that reduces your RRSP room dollar-for-dollar. DB pensions generate large PAs (often C$10-20k for higher earners) — leaving minimal room for RRSP. DC pensions typically generate PAs equal to total contributions. This is intentional: the system prevents double-dipping by ensuring total tax-deferred savings stay within the 18% × earned income limit.

Carry-Forward Lasts Forever

Unused RRSP room carries forward indefinitely until age 71 (when RRSP must be converted to RRIF). Many late-career earners accumulate C$50,000-200,000+ in unused room. The strategy: use carry-forward room during peak earning years (often 50-65) when marginal tax rate is highest, achieving maximum tax deferral benefit. Check your Notice of Assessment for accumulated room — CRA tracks it automatically.

Over-Contribution Penalty

CRA allows a C$2,000 lifetime over-contribution cushion (no penalty). Above the cushion: 1% per month penalty on the excess. For a C$10,000 over-contribution, penalty = C$80/month = C$960/year. Withdraw the excess within the year to stop the penalty. The cushion is lifetime, not annual — once used, it never replenishes. Best practice: leave at least C$2,000 of room unused to avoid accidental over-contribution.

Sources: canada.ca/cra RRSP limits 2027, cra-arc.gc.ca over-contribution. Last updated: May 2026.