Tax-free savings accounts (TFSA) explained
A TFSA is one of the most valuable tools available to South African investors. Used well over many years, it can save you a meaningful amount in tax. Here's how it works.
What is a TFSA?
A tax-free savings account is a special investment account introduced by the South African government to encourage saving. Everything that grows inside it — interest, dividends and capital gains — is completely free of tax. Normally you'd pay tax on those returns; inside a TFSA, you don't.
Contribution limits
The tax break comes with limits set by SARS:
- Annual limit: R36,000 per tax year (at the time of writing).
- Lifetime limit: R500,000 in total contributions (at the time of writing).
These figures can change, so always confirm the current limits before contributing. Importantly, the limits apply across all your TFSAs combined, not per account.
What over-contributing costs you
Exceeding the limit is one of the few genuinely expensive mistakes in a TFSA, and it is easy to make by accident if you hold accounts at more than one provider. SARS levies a 40% penalty tax on the excess amount, and that penalty is assessed on top of the ordinary treatment of the account.
| What you contribute in a tax year | Excess | Penalty at 40% |
|---|---|---|
| R36 000 | R0 | R0 |
| R40 000 | R4 000 | R1 600 |
| R50 000 | R14 000 | R5 600 |
| R72 000 | R36 000 | R14 400 |
The practical safeguard is simple: if you hold TFSAs with more than one provider, keep a single running total yourself. Providers see only their own account and cannot warn you that your combined contributions have crossed the line.
How a TFSA compares to the alternatives
| TFSA | Retirement annuity | Ordinary account | |
|---|---|---|---|
| Tax on growth | None | None while invested | Capital gains tax on disposal |
| Tax on dividends | None | None | 20% withholding tax |
| Tax on withdrawal | None | Taxed as income in retirement | None beyond gains already taxed |
| Deduction now | No | Yes — up to 27.5% of taxable income, capped at R350 000 | No |
| When you can access it | Any time | Age 55, with limited exceptions | Any time |
| Annual limit | R36 000 | Deduction capped; contributions not | None |
The two are not rivals so much as different jobs. A retirement annuity buys you a deduction today in exchange for locking the money up; a TFSA gives you no deduction but keeps every cent of growth and stays accessible. Many South Africans use both — see retirement annuity vs TFSA for the fuller comparison.
What can you hold in a TFSA?
Depending on the provider, a TFSA can hold cash, ETFs, unit trusts and other approved investments. Because growth is tax-free, many long-term investors use their TFSA to hold growth assets like equity ETFs, where the tax saving on decades of compounding can be substantial.
The power of tax-free compounding
The real magic is time. When returns compound year after year without tax dragging them down, the difference versus a taxable account grows wider the longer you stay invested. That's why financial educators often suggest maximising your TFSA early and holding for the long term.
Common mistakes to avoid
- Over-contributing — the penalty is 40% of the excess. Track every contribution.
- Using it as a bank account — frequent withdrawals waste precious lifetime room.
- Holding only cash — for long horizons, growth assets often make better use of the tax shelter (though this depends on your goals and risk tolerance).
A TFSA works best as one part of a broader plan. Learn how to build a diversified portfolio to see where it fits.