What's the core trade-off?

RRSP gives you a tax deduction now (so you contribute pre-tax dollars and the refund can be reinvested), but withdrawals are fully taxed at retirement. TFSA gives no deduction (you contribute after-tax dollars), but withdrawals are tax-free. If your marginal tax rate is the SAME at contribution and at withdrawal, the after-tax outcome is mathematically identical.

When your retirement marginal tax rate is LOWER than your current rate. Classic example: high-income worker today (45% marginal) who will live on a smaller retirement income (25% marginal). The 20% spread compounds significantly over 20-30 years.

When your retirement marginal tax rate is HIGHER than today's. Common for: students with low income now, those expecting OAS clawback, those with significant DB pension or rental income in retirement, or anyone planning a much-higher-income future.

What about the refund?

An RRSP only beats a TFSA if you reinvest the tax refund. If you spend the refund, the comparison is no longer apples-to-apples. This calculator assumes the refund is reinvested in your RRSP (the optimal strategy).

Often yes. The classic stack: max TFSA first if your current marginal rate is low; max RRSP first if you're in a high bracket. Above the higher account's room, contribute to the other. The FHSA (if eligible) typically beats both for first-home savings.

TFSA vs RRSP Decision Calculator

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Free TFSA vs RRSP comparison calculator. Enter your current marginal tax rate, expected retirement marginal rate, contribution amount, expected return, and time horizon — see the after-tax value of each strategy at retirement. The tool implements the well-known equivalence: TFSA wins if your retirement marginal rate is higher than today's; RRSP wins if it's lower; they tie if rates match.

Gross amount available (CAD)

Pre-tax dollars you could contribute to RRSP (or pay tax on, then put after-tax into TFSA).

Marginal rate now (%)

Marginal rate at retirement (%)

Annual return (%)

Years to retirement

Assumption · RRSP refund is reinvested · same return for both accounts

Mathematically: TFSA wins if marginal rate goes UP at retirement; RRSP wins if it goes DOWN.

Suggested account

RRSP

Wins by $3,433 after-tax at retirement

RRSP after-tax

$32,189

Contribute $10,000

TFSA after-tax

$28,756

Contribute $6,700 (after tax)

Disclaimer: For informational purposes only. This is not financial, tax, or legal advice — consult a licensed professional before making decisions.

Frequently Asked Questions

References

TFSA vs. RRSP — Canada Life — Canada Life

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Frequently Asked Questions

References and sources

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