RRSP or TFSA: which saves you more tax?

You've got some money to set aside, and the same question comes back every time: RRSP or TFSA? Both shelter your savings from tax, but not in the same way — and depending on your salary, one of them saves you noticeably more. Here's how to decide, with the numbers to back it up.

The difference in one sentence

An RRSP (Registered Retirement Savings Plan) defers tax: you deduct your contribution today, but the money is taxed when you take it out. A TFSA (Tax-Free Savings Account) does the opposite: no deduction going in, but everything that comes out — contributions and gains alike — is tax-free. Two opposite logics, and that difference is what decides which one is right for you.

RRSP: tax deferred, not erased

When you contribute to an RRSP, the amount lowers your taxable income for the year. In other words, RRSP contributions reduce the tax you pay right away: every dollar you deduct saves you tax at your marginal rate, the rate that hits your next dollar of income — always higher than your average rate (more on that below).

Your contribution room is capped. It's worth 18% of your prior-year earned income, up to an annual maximum of $33,810 for 2026. Any room you don't use carries forward from one year to the next.

The word that matters is deferred. The tax isn't erased: in retirement, when you pull the money out, it's added to your income and becomes taxable again. The RRSP bet is simple — deduct while you earn a lot, withdraw when you earn less.

TFSA: no deduction, but everything comes out tax-free

A TFSA starts from money that's already been taxed: your contribution changes nothing on this year's return. In exchange, TFSA contributions are not deductible, but the gains and withdrawals stay tax-free. You'll never pay a cent of tax on what your TFSA earns.

The limit is the same for everyone: $7,000 for 2026, added to your room at the start of the year. As with the RRSP, unused room carries forward. One quiet but real advantage: a TFSA withdrawal isn't income, so it doesn't reduce benefits and credits that are calculated on your income.

So which one saves the most tax?

It all comes down to one number: your marginal rate. The higher it is, the more the RRSP deduction is worth. Here's what a $1,000 RRSP contribution saves you in immediate tax, according to the Salarium calculator, at three salary levels in Quebec (rounded figures):

The TFSA offers no immediate saving: its payoff comes later, at withdrawal, when everything comes out tax-free. That's why the answer depends on your salary.

Modest salary: the TFSA often wins

At $40,000, your marginal rate is around 26%. The RRSP deduction exists, but it doesn't buy much. And if your retirement income is likely to be taxed at a similar rate, or to cost you income-tested benefits, deferring tax can backfire. The TFSA avoids that trap: nothing comes out taxable, nothing counts as income. For a modest salary, it's often the safer choice.

High salary: the RRSP pulls ahead

At $130,000, every $1,000 you deduct wipes out $460 of tax on the spot. If you expect a lower income in retirement, you'll repay that tax at a lower rate: that's exactly the RRSP's winning bet. The higher your marginal rate today, the more the gap works in its favour.

In practice: how to choose

The short rule is one comparison: your marginal rate today versus the one you'll have in retirement. If it'll be lower later, the RRSP wins. If it'll be higher, or if you want the money accessible with no tax bill, the TFSA wins.

Nothing forces you to pick one side: many savers use the RRSP to crush tax in high-income years and the TFSA for everything else. Your marginal rate depends on your exact salary; to find it before you decide, enter your gross pay in the net salary calculator, which shows your marginal rate and your average rate. And if the gap between the two surprises you, our article on the marginal rate versus the average rate breaks it down.