TFSA, RRSP, FHSA: the order you fill them matters more than the accounts themselves

The 2026 numbers, so we are working from the same figures:

Start with the one that is not a trade-off

The FHSA is unusual: it gives a deduction on the way in like an RRSP and tax-free withdrawal like a TFSA. No other registered account does both. If you qualify as a first-time home buyer, it is the first $8,000 to allocate — there is no rate calculation to do, because it wins on both sides.

Practical consequence: if there is any chance you or an adult child will buy a first home in Canada, open the account now, even funding it lightly. Opening starts both the room and the 15-year clock.

And the downside risk is small — if you never buy, the FHSA can be transferred to an RRSP tax-free without using RRSP room.

Then RRSP vs TFSA: it is a rate comparison

The RRSP deduction is worth your marginal rate today; the withdrawal costs your marginal rate in retirement. So:

• Expect a lower rate in retirement than today → RRSP first. You are arbitraging the difference.
• Expect a similar or higher rate → TFSA first. Also true if you are early-career and your income will rise; the deduction is worth more later, and RRSP room carries forward indefinitely.
• Income-tested benefits matter → TFSA. Withdrawals are invisible to the OAS clawback and GIS calculations. For modest-income retirees this can outweigh the arbitrage entirely.

One nuance often skipped: you can contribute to an RRSP now and claim the deduction in a later year. Contributing during a low-income year and deducting during a high-income one captures both the sheltered growth and the better rate.

The thing that beats all of this

An employer pension match. A 50% match is an immediate 50% return, before any investment decision. Fill that to the maximum before optimising anything else.

A workable default order

1. 1Employer match, to the maximum.
2. 2High-interest debt. Nothing in a registered account reliably beats 20% credit card interest.
3. 3FHSA, if you qualify — and open it even if you cannot fund it fully.
4. 4RRSP or TFSA per the rate comparison above.
5. 5RESP if you have children — the 20% CESG match on the first $2,500 per year is government money, capped at $500 annually.
6. 6Non-registered or corporate structures once the registered room is genuinely exhausted.

Two mechanical traps worth knowing. TFSA withdrawals do not restore room until 1 January of the following year — withdrawing and re-contributing in the same year is the most common over-contribution penalty in Canada. And FHSA over-contributions attract 1% per month, so track the room rather than estimating.

The optimal sequencing of registered accounts depends on your projected lifetime tax bracket trajectory, employer matching, and family cash-flow milestones. Modeling these accounts across a multi-year horizon ensures you maximize cumulative after-tax wealth.