TFSA vs RRSP: Which One Should You Fill First?
Every Canadian saver eventually hits this fork: you have some money to invest, and you can put it in a TFSA or an RRSP. Both shelter your investments from tax. Both are excellent. But they work in opposite ways — and choosing the wrong one first can quietly cost you thousands over a lifetime.
The good news: the decision comes down to one question you can usually answer in your head. Let's build up to it.
The Core Difference: When You Pay Tax
This is the entire ballgame, so it's worth getting precise:
- RRSP is a tax-deferred account. You contribute pre-tax dollars (you get a tax deduction now), your investments grow tax-free, and you pay income tax when you withdraw in retirement.
- TFSA is a tax-free account. You contribute after-tax dollars (no deduction now), your investments grow tax-free, and you pay zero tax when you withdraw — ever.
In plain terms: the RRSP gives you the tax break now; the TFSA gives it to you later.
The Surprising Math: They Can Be Identical
Here's something most people don't realize. If your tax rate is the same when you contribute as when you withdraw, the TFSA and RRSP produce exactly the same after-tax result. Watch:
Scenario: You have $1,000 of pre-tax income to invest, a 30% tax rate, and your money will double before withdrawal.
RRSP: Contribute the full $1,000 (pre-tax). It doubles to $2,000. Withdraw and pay 30% tax → $1,400.
TFSA: Pay 30% tax first, leaving $700 to contribute. It doubles to $1,400. Withdraw tax-free → $1,400.
Identical. So if the outcome is the same when tax rates match, the entire decision hinges on one thing: will your tax rate be higher now, or in retirement?
The Rule That Falls Out of the Math
- RRSP wins when your tax rate is higher now than it will be in retirement. You deduct at a high rate and withdraw at a low one, pocketing the difference. This usually describes high-income earners in their peak earning years.
- TFSA wins when your tax rate is lower now than it will be in retirement — or simply uncertain. This describes students, early-career workers, people in a temporary low-income year, and anyone who expects a healthy retirement income (a pension plus large RRSP withdrawals can push your future rate up).
For many people early in their careers, the TFSA is the smarter first dollar. You're likely in a lower bracket now than you will be at your peak — so it's better to save the RRSP deduction for those higher-earning years when it's worth more.
Beyond the Math: The Practical Advantages
The TFSA has flexibility the RRSP can't match:
- Tax-free, penalty-free withdrawals anytime. Need the money for a car, an emergency, or a house? Take it out, no tax. RRSP withdrawals are taxed as income (outside specific programs like the Home Buyers' Plan).
- Withdrawn room comes back. Take $10,000 out of your TFSA this year, and that $10,000 is added back to your contribution room next January. RRSP room is gone once withdrawn.
- No effect on income-tested benefits. TFSA withdrawals don't count as income, so they don't claw back Old Age Security (OAS) or the Guaranteed Income Supplement (GIS) in retirement. Large RRSP/RRIF withdrawals can.
The RRSP's standout advantage, beyond the deduction, is the forced discipline — because withdrawals are taxed, you're far less likely to raid it — plus the Home Buyers' Plan, which lets first-time buyers borrow from their RRSP tax-free for a down payment.
2025 Contribution Room
- TFSA: $7,000 for 2025, plus any unused room carried forward since 2009.
- RRSP: 18% of your previous year's earned income, up to a 2025 dollar limit of $32,490, minus any pension adjustment.
Both let unused room accumulate, so you don't lose it by not contributing in a given year.
See how your TFSA could grow tax-free over time — adjust your contributions, rate of return, and time horizon.
Use the TFSA Calculator →So, Which First?
A practical priority order for most people:
- Capture any employer RRSP match if you have a group plan — that's free money.
- If you're a lower or middle earner, fill your TFSA next for its flexibility and tax-free growth.
- If you're a high earner in your peak years, prioritize the RRSP for the valuable deduction, then use the refund to fund your TFSA.
- If you can, do both. They're complementary, not competing, and using each strategically is the most powerful approach of all.
This article is for educational purposes only and is not financial or tax advice. Tax situations are individual — consider consulting a qualified advisor.