RRSP Contribution Room Calculator
Room, carry-forward and what it saves.
- Nothing is sent to a server
- Instant results
- Free, no sign-up
This tool is still in development and is not yet listed publicly.
Related tools
All calculators- Mortgage CalculatorSemi-annual compounding, CMHC and stress test.
- GST/HST CalculatorGST, HST, PST and QST for every province.
- Alberta — 5%GST at 5%. Add it or back it out.
- British Columbia — 12%GST + PST at 12%. Add it or back it out.
- Manitoba — 12%GST + RST at 12%. Add it or back it out.
- New Brunswick — 15%HST at 15%. Add it or back it out.
Questions
How is RRSP contribution room calculated?
It is 18% of the previous year's earned income, capped at an annual dollar limit, reduced by any pension adjustment, plus all the room you have not used in previous years. Earned income is narrower than total income — salary, self-employment profit and net rental income count, but investment income, dividends and capital gains do not.
What is a pension adjustment and why does it reduce my room?
If you have a workplace pension, the value of the benefit you earned last year is reported in box 52 of your T4 and reduces your RRSP room roughly dollar for dollar. The logic is fairness: someone accruing a defined-benefit pension is already building tax-assisted retirement savings. Members of generous plans often have almost no RRSP room, and that is the system working as designed.
What is unused contribution room worth?
Often more than a single year's new room. Unused room accumulates indefinitely, never expires and never shrinks, so someone who has worked fifteen years and contributed sporadically may have a six-figure carry-forward. The authoritative figure is on your CRA notice of assessment or in My Account.
How much tax does an RRSP contribution actually save?
It is a deduction rather than a credit, so it comes off the top of your income and saves tax at your marginal rate. A $10,000 contribution is worth roughly $4,300 at Ontario's 43.4% marginal rate and roughly $2,000 in the lowest bracket. That asymmetry is the whole strategy — contribute in a high-income year, withdraw in retirement at a lower rate.
Should I use an RRSP or a TFSA?
If you are currently in the lowest tax bracket, usually a TFSA. You get no deduction, but withdrawals are completely tax-free and do not affect income-tested benefits like the Guaranteed Income Supplement or the Canada Child Benefit. The RRSP wins when your rate today is meaningfully higher than the rate you expect in retirement.
What happens if I over-contribute?
There is a $2,000 lifetime buffer, and above that the CRA charges 1% per month on the excess until it is withdrawn — 12% a year, far more than the deduction is worth. Unwinding it means filing a T3012A or T1-OVP. The buffer exists to absorb small errors, not as extra room to use deliberately.
About rrsp calculator
How contribution room is calculated
Your new room each year is 18% of the previous year’s earned income, capped at an annual dollar limit, reduced by any pension adjustment, and added to whatever room you have not used before.
“Earned income” is narrower than total income: salary, self-employment profit, net rental income and some support payments count. Investment income, dividends and capital gains do not. This catches out people whose income is mostly from investments — a large income can generate very little RRSP room.
The carry-forward is usually the big number
Unused room accumulates indefinitely. Someone who has been working for fifteen years and contributing sporadically often has more carried-forward room than any single year’s new room, and the total can run well into six figures. It never expires and never shrinks.
The authoritative figure is on your CRA notice of assessment, or in My Account under RRSP and TFSA. That number already accounts for everything below and is the one to trust — this calculator estimates it when you do not have the notice to hand.
The pension adjustment
If you have a workplace pension, the value of the benefit you earned last year is reported as a pension adjustment in box 52 of your T4, and it reduces your RRSP room roughly dollar for dollar. The logic is fairness: someone accruing a defined-benefit pension is already building retirement savings with tax assistance, so their RRSP room shrinks to match. Members of generous pension plans often have almost no RRSP room at all, and that is working as intended.
What the deduction is actually worth
An RRSP contribution is a deduction, not a credit, so it comes off the top of your income and saves tax at your marginalrate. A $10,000 contribution is worth roughly $4,300 to someone at Ontario’s 43.4% marginal rate, and roughly $2,000 to someone in the lowest bracket.
That asymmetry is the strategy. Contributing in a high-income year and withdrawing in retirement at a lower rate is the entire point of the account. If you are currently in the lowest bracket, a TFSA is usually the better home for the money — you get no deduction, but withdrawals are completely tax-free and do not affect income-tested benefits.
You can also claim the deduction later than you contribute. Contributing this year and carrying the deduction forward to a year when you expect to earn more is entirely legitimate and often worth several hundred dollars.
Over-contributing
There is a $2,000 lifetime buffer, and above that the CRA charges 1% per month on the excess until it is withdrawn. That is 12% a year — far more than the deduction is worth — and unwinding it means filing a T3012A or T1-OVP. The buffer exists to absorb small errors, not as extra room to use deliberately.
Deadlines
Contributions made in the first 60 days of a calendar year can be deducted against either the previous tax year or the current one, which gives you a decision to make rather than just a deadline to meet. Contributions after that window apply to the current year only.
Related
See what a contribution does to your pay cheque with the take-home pay calculator, compare provinces with the income tax estimator, or browse the other financial calculators.