Putting Money in an RRSP on a $100,000 Ontario Salary

Updated September 30, 2026 · Checked by the Tax-Services.ca editorial team · How we check

Before any RRSP contribution, $100,000 in Ontario nets $74,206 a year, or $6,184 a month. A contribution lowers taxable income, so take-home pay falls by less than the amount you put in.

Three contribution sizes at $100,000

Put in $2,000 and the tax bill drops by $619, so the real hit to take-home pay is $1,381. At $5,000 the tax saved is $1,508 and the hit is $3,492. At $10,000 the saving is $2,991 and the hit is $7,009.

What the contribution costs after the tax saved

The marginal rate at this pay is 31.5%, so each deducted dollar saves close to 31 cents. The table shows the saving per dollar slipping a little as the contribution grows, because the deduction reaches into slices of income taxed at lower rates. The money itself is not spent: it sits inside the RRSP. The cost shown is only what leaves your cheque.

Two comparisons with other pay

A $5,000 contribution leaves take-home pay of $70,714, the same as someone earning $95,000 with no RRSP. A $10,000 contribution leaves $67,197, the same as a $90,000 salary. The difference is that the RRSP money is still yours inside the plan. You can compare the full pay at those levels in the articles on $95,000 in Ontario and $90,000 in Ontario.

What the contribution leaves alone

CPP of $4,646 and EI of $1,123 are charged on gross pay, so an RRSP contribution does not reduce them. Only income tax moves. Before any contribution, federal and Ontario tax together come to $20,024. After a $10,000 contribution that falls to $17,034, and the whole $2,991 difference is the tax saved in the table.

Spreading it over the year

A $10,000 contribution made in equal monthly amounts is about $833 a month. Take-home pay falls by about $584 a month, from $6,184 to $5,600. How fast the tax saving reaches you depends on whether your employer adjusts withholding at source or you wait for the refund after filing.

The limit and the calculator

The dollar cap on RRSP contributions for 2026 is $33,810, so all three amounts sit well under it. Your own room can be lower and is shown on your CRA notice of assessment. To test other amounts, use the RRSP calculator. The 100k Ontario breakdown shows how the $100,000 is taxed before any contribution, and the tax brackets by year and province page lists the brackets behind the savings.

Where do these figures come from?

These figures are calculated with the same engine as our take-home pay calculator and the 2026 tables from the Canada Revenue Agency and the provinces. Only pay is counted, with no RRSP, credits or benefits unless the text says so. This is an independent information site: we provide no services, we do not represent the CRA or any organization, and we do not guarantee that anything here is accurate or current. We accept no liability for decisions based on it. Check the official source before you rely on it. See the full disclaimer.

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