Ask ten people whether to put your next dollar into an RRSP or a TFSA and you'll get ten confident answers — most of them wrong for your specific situation. The real answer hinges on one question: will you likely pay more tax now, or more tax later?
Picture two people. Priya makes $95,000 and is firmly in a higher tax bracket. Marcus makes $42,000 and expects his income to climb steadily over the next decade. Same two accounts available to both of them, same contribution rules — but the right first move is different for each, and it comes down to nothing more complicated than which side of the tax equation they're on.
What each account is actually doing
An RRSP contribution gets you a tax deduction the moment you put money in. Great news today, less great later — every dollar you pull out in retirement gets taxed as regular income, deduction fully reversed at whatever your rate is then. A TFSA works the opposite way: no deduction going in, but growth and withdrawals are tax-free forever, no matter how large the account gets or when you touch it.
So an RRSP is really a tax deferral, not a tax break. You're betting your rate in retirement will be lower than your rate right now. For Priya, in a high bracket today and likely to drop into a lower one after she stops working, that bet makes sense. For Marcus, expecting his income (and tax bracket) to rise for years to come, deferring tax to a future when he'll owe more on it is working against himself.
The room isn't calculated the same way either
RRSP room is 18% of last year's earned income, capped at $33,810 for 2026 — so it scales with what you make. TFSA room is a flat $7,000 for 2026, and it doesn't care whether you earned $30,000 or $300,000 last year. Everyone gets the same number.
One thing both accounts share: neither one's unused room ever expires. If you haven't been maxing either account out, check CRA My Account before assuming this year's fresh allocation is all you've got — most people are sitting on more accumulated room than they realize.
If you're still not sure
The common rule of thumb among advisors: TFSA first if you're a lower earner or still building an emergency fund, since you can pull money out penalty-free and tax-free whenever you need it. RRSP priority tends to grow as your income (and tax bracket) climbs — and if your employer matches RRSP contributions, that match usually wins regardless of the tax math, since free money is free money.
Want your own numbers instead of a rule of thumb? The Canada RRSP & TFSA Calculator will show your actual room and estimated tax savings either way.
A few things people actually ask
Can I contribute to both an RRSP and a TFSA in the same year?
Yes, there's nothing stopping you from using both — the question of "which first" is really about where your next dollar goes if you can't max out everything at once.
What if I genuinely don't know what my future tax bracket will be?
Splitting contributions between both accounts is a reasonable hedge when the future is genuinely uncertain — you don't have to bet everything on one prediction.
Does an employer RRSP match change the calculation?
Usually yes, and decisively — an employer match is free money on top of the tax treatment, so it typically wins over TFSA priority regardless of your bracket, up to whatever amount your employer matches.