An RRSP contribution is deducted from your income before tax is calculated, so what it is worth depends on the tax rates it removes you from. Federal rates are the same everywhere, but every province and territory sets its own brackets, rates and credits. That is why a $5,000 deduction at $70,000 of taxable income saves $1,858 in Nova Scotia but only $1,375 in Nunavut.
The table below shows the estimated 2026 tax saving from a $5,000 deduction at four income levels. Each figure comes from two complete tax calculations, before and after the deduction, so it accounts for a deduction that crosses from one bracket into another. Choose your province for the full picture: savings at twelve income levels, the exact combined marginal rate at every income, the provincial brackets and credits, and a calculator you can set to your own numbers.
Why the same contribution is worth different amounts
Provincial rates do most of the work. At $70,000 the federal marginal rate is 20.5% in every province except Quebec, so the gaps in the table come from provincial brackets. Provinces whose middle bracket starts early, such as Nova Scotia and Prince Edward Island, give middle earners a higher combined rate and therefore a bigger saving.
Quebec is a special case. Quebec residents pay a reduced federal tax because of the 16.5% Quebec abatement, but Quebec's own rates are the highest in the country. The net effect is that an RRSP deduction is worth more in Quebec than in most provinces at the same income.
Surtaxes and phase-outs change the picture at specific incomes. Ontario's surtax raises effective provincial rates from about $94,901 of taxable income, the BC tax reduction phases out between $25,570 and about $44,952, and Manitoba claws back its basic personal amount between $200,000 and $400,000. The province pages show each of these as a band in the marginal-rate table.
The gap widens with income. At $100,000 the saving on $5,000 ranges from $1,375 to $1,880 depending on where you live. At the top of the scale, combined marginal rates run from 44.5% to 54.8%.
What the estimate leaves out
These are changes in tax owed for one person with no other deductions or credits. Your actual refund also depends on how much tax your employer withheld, and on credits and benefits that are tied to income, such as the Canada Child Benefit, the GST/HST credit and, for seniors, Old Age Security recovery tax. Those can make a deduction worth more than the tables show.
Contributions made by March 1, 2027 count toward the 2026 tax year. The 2026 RRSP dollar limit is $33,810, or 18% of your 2025 earned income if that is lower, and your exact deduction limit is printed on your Notice of Assessment. For how the limit, carry-forward and withdrawals work, read the RRSP explained.