RRSP Tax Calculator
RRSP Tax Optimizer
Enter your income details to see how each $100 of RRSP contribution affects your combined federal tax, provincial tax, and Canada Child Benefit.
Your Information
How it works
01
Income & Room
Enter your gross income and available RRSP room from your latest Notice of Assessment.
02
Simulation
The calculator loops from $0 to your max room in $100 increments, computing your net tax burden (federal + provincial − CCB) at every point.
03
METR Chart
Each point on the chart shows how much of the next $100 contribution is recovered as tax savings plus CCB recovery — revealing the true value of every dollar.
Also try
Good to know
What is METR? The Marginal Effective Tax Rate combines your income tax marginal rate with the implicit tax of losing government benefits (like CCB) as your income rises. A 40% METR means each extra dollar costs you $0.40 in combined taxes and lost benefits.
Why does METR spike? When RRSP contributions push your Adjusted Family Net Income below a CCB phase-out threshold, you recover a large chunk of benefit in a short range — creating a visible spike on the chart. These are the highest-value contribution dollars.
What counts as AFNI?Adjusted Family Net Income is your net income plus your spouse's net income. RRSP contributions reduce your net income, lowering AFNI and increasing CCB entitlement.
Limitations.This tool uses 2026 indexed estimates. It does not model Ontario surtax, Québec's parallel tax system, AMT, OAS/GIS clawbacks, or other personal credits. Always verify with a qualified tax advisor before making contribution decisions.