TFSA Growth Calculator Canada

How does tax-free growth work in a TFSA?

**Inside a TFSA, all investment returns compound without any tax being deducted, ever.** Interest, dividends, and capital gains earned within the account are never taxed, not while they grow and not when you withdraw them. This is fundamentally different from a non-registered account, where the Canada Revenue Agency taxes your investment income every year.

The power of tax-free compounding grows exponentially over time. In a non-registered account, taxes reduce your effective return each year, which means you have less principal generating returns in the next year. This is called tax drag. Over 20 or 30 years, tax drag can reduce your final balance by 20% to 40% compared to a TFSA holding the same investments.

For example, $10,000 invested at 6% compounded monthly for 25 years grows to $44,650 inside a TFSA. In a non-registered account at a 33% marginal tax rate, the same investment grows to only $33,864 after annual taxes on investment income. That is $10,786 lost to tax drag, and the gap widens every year.

The TFSA was introduced in 2009 by the Government of Canada specifically to give Canadians a tax-sheltered way to save and invest for any purpose. Unlike the RRSP, there is no tax deduction on contributions, but there is also no tax on withdrawals ([Canada.ca](https://www.canada.ca/en/revenue-agency/services/tax/individuals/topics/tax-free-savings-account.html)).

TFSA vs non-registered account: why does the gap keep growing?

**The difference between TFSA and non-registered returns accelerates over time because tax drag compounds against you.** In a non-registered account, taxes reduce your balance each year, and that reduced balance generates less growth the following year. The longer you invest, the wider the gap becomes.

Tax drag depends on your marginal tax rate and the type of investment income. Interest income is taxed at your full marginal rate (20% to 54% depending on province and income). Canadian eligible dividends receive preferential treatment through the dividend tax credit. Capital gains are 50% taxable (only half the gain is added to your income). Inside a TFSA, none of these distinctions matter because nothing is taxed.

The calculator above models tax drag assuming interest income taxation, which is the most conservative comparison. If your TFSA holds equity investments where returns come from capital gains, the advantage is still significant but somewhat smaller because capital gains receive preferential tax treatment even outside a TFSA.

At a 33% marginal rate, the tax drag on interest income is 0.33 multiplied by the gross return. If your gross return is 6%, your after-tax return in a non-registered account is approximately 4.02%. Over 25 years, the difference between compounding at 6% versus 4.02% is substantial: $44,650 versus $33,864 on an initial $10,000 investment.

What is the best TFSA contribution strategy?

**The optimal strategy is to contribute the maximum each year as early as possible, because earlier contributions have more time to compound tax-free.** The 2026 annual TFSA limit is $7,000. If you cannot contribute the full amount, prioritize consistency over amount.

Lump-sum contributions at the beginning of the year outperform monthly contributions of the same total amount because the money is invested for more months. Contributing $7,000 on January 1 versus $583.33 per month results in roughly $200 to $400 more growth per year at a 6% return, depending on compounding frequency.

If you have unused contribution room from prior years, you can make a large catch-up contribution. Canadians who were 18 or older in 2009 and have never contributed have $109,000 in lifetime room. Even a partial catch-up puts significantly more capital to work tax-free.

Avoid over-contributing. The CRA charges a 1% per month penalty on amounts exceeding your contribution room. If you made withdrawals during the current year, remember that the withdrawn amount is only added back to your room on January 1 of the next year. Re-contributing withdrawn funds in the same calendar year can trigger an over-contribution.

GICs vs ETFs inside a TFSA: which grows more?

**GICs offer guaranteed returns with no risk to principal, while equity ETFs offer higher expected returns with short-term volatility.** The right choice depends on your time horizon, risk tolerance, and financial goals.

As of April 2026, Canadian GIC rates range from 2.25% to 3.85% for 1- to 5-year terms. These rates are guaranteed by the issuing institution and insured by CDIC up to $100,000. Inside a TFSA, the guaranteed interest is completely tax-free.

Broad Canadian equity ETFs (like those tracking the S&P/TSX Composite or the S&P 500) have historically returned 6% to 8% annually over 20+ year periods, though individual years can vary from -30% to +30%. Over a 25-year horizon, the difference between 3.5% (GIC) and 7% (equity ETF) is enormous: $7,000/year contributions at 3.5% grow to approximately $269,000, while the same contributions at 7% grow to approximately $459,000.

Many Canadians use a blended approach: GICs for money needed within 5 years and equity ETFs for longer-term goals. The TFSA is particularly valuable for equity investments because capital gains and dividends, which would be partially taxable in a non-registered account, are completely sheltered.

TFSA withdrawal and re-contribution rules

**You can withdraw from your TFSA at any time, for any reason, with no tax consequences.** There are no age restrictions, no minimum holding periods, and no penalties for early withdrawal. This flexibility makes the TFSA unique among registered accounts.

When you withdraw from a TFSA, the withdrawn amount is added back to your contribution room on January 1 of the following year. For example, if you withdraw $10,000 in June 2026, that $10,000 is added to your 2027 contribution room on top of the 2027 annual limit.

If your investments grew inside the TFSA, you get contribution room for the full withdrawal amount, including growth. If you contributed $5,000 and it grew to $8,000, withdrawing the full $8,000 gives you $8,000 in new room the following year, not just the original $5,000.

The most common mistake is re-contributing withdrawn funds in the same calendar year without having unused room. If you withdraw $10,000 and re-contribute it in the same year, that counts as a new $10,000 contribution. Unless you have $10,000 in unused room, you will be over-contributing. Always wait until the following year or verify your available room before re-contributing.

Worked example: projecting TFSA growth for a 30-year-old Canadian

**Step 1: Enter your current TFSA balance.** You have $25,000 currently invested in your TFSA, split between a GIC ladder and a Canadian equity ETF.

**Step 2: Set your annual contribution.** You plan to contribute the maximum $7,000 each year.

**Step 3: Set the expected return.** Your blended portfolio (50% GIC at 3.5%, 50% equity ETF at 7%) has a weighted expected return of 5.25%.

**Step 4: Choose compounding frequency.** Select monthly compounding, which approximates how most investment portfolios accrue returns.

**Step 5: Set the investment horizon.** You are 30 and plan to invest until age 60, so enter 30 years.

**Step 6: Enter your marginal tax rate.** Your combined federal and Ontario marginal rate is 33%.

**Step 7: Review results.** Starting with $25,000 and contributing $7,000/year at 5.25% compounded monthly for 30 years, your TFSA grows to approximately $589,000. The same investments in a non-registered account would grow to approximately $479,000 after annual taxes on investment income. Your TFSA advantage is approximately $110,000 in additional wealth, all because your growth was never taxed.