The RRSP is one of the most powerful tax tools available to Canadians — but many people contribute without fully understanding how the tax savings actually work. Here's a concrete, step-by-step example using 2026 numbers.

The mechanism: taxable income reduction

When you contribute to an RRSP, you reduce your taxable income by the contribution amount. The government calculates your taxes on the lower number, so you owe less tax today. The savings show up either in lower paycheck deductions (if your employer processes it) or as a tax refund when you file your return.

Step-by-step: $75,000 salary, $5,000 RRSP contribution

Scenario: Ontario resident, $75,000 annual salary, contributing $5,000/year to RRSP.

Step 1 — Without RRSP:

Tax	Amount
Federal income tax	$8,405
Ontario provincial tax	$3,763
Total income tax	$12,168

Step 2 — With $5,000 RRSP:

Your taxable income drops from $75,000 to $70,000.

Tax	Amount
Federal income tax	$7,706
Ontario provincial tax	$3,316
Total income tax	$11,022

Step 3 — Your actual savings:

$12,168 − $11,022 = $1,146 saved in tax

Step 4 — Your actual cost:

You contributed $5,000, but recovered $1,146 in tax savings. Your real out-of-pocket cost was $3,854 — not $5,000.

Why the savings aren't exactly 26%

You might expect $5,000 × 26% marginal rate = $1,300 in savings. The actual number ($1,146) is slightly lower because the contribution pulls income across two tax brackets — the bottom portion of the $5,000 is taxed at a lower rate. This is normal and expected.

How much RRSP room do you have?

Your 2026 RRSP contribution room is 18% of your 2025 earned income, up to a maximum of $32,490 for 2026. Your available room is shown on your most recent CRA Notice of Assessment.

RRSP vs TFSA — the key difference

Both accounts shelter investment growth from tax, but they work differently at contribution time:

	RRSP	TFSA
Contribution	Reduces taxable income now	No tax deduction
Withdrawal	Taxed as income	Tax-free
Best for	Higher earners expecting lower income in retirement	Everyone, especially lower earners

The RRSP defers tax; the TFSA eliminates it. For most Canadians, both have a role. See our RRSP vs TFSA guide for a full comparison.

Try it yourself

Use the Earneli calculator to see your exact RRSP tax savings. Enter your salary and province, then toggle the RRSP section and enter a contribution amount — the results update in real time showing exactly how much you save.

💡 The takeaway: A $5,000 RRSP contribution on a $75k Ontario salary costs you only $3,854 after tax savings — and your money continues growing tax-sheltered until retirement.

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