TFSA Calculator South Africa 2026 — the R46,000 Limit Explained

From 1 March 2026, the amount you can put into a Tax-Free Savings Account each year rose from R36,000 to R46,000 — the first increase since 2021. If you have a TFSA and haven't adjusted your debit order, you're leaving R10,000 of tax-free room on the table this year.

This guide covers the 2026/27 rules in full: the annual and lifetime limits, the 40% penalty that catches people out, and — the part most articles skip — what "tax-free" is actually worth in rand once compounding runs for a few decades. Every figure can be tested in the calculator.

New to compounding? Start with our complete guide to compound interest in South Africa.

What a TFSA is (and what SARS actually calls it)

A Tax-Free Savings Account is a wrapper, not a product. Inside it, every tax that normally applies to investing is switched off: no tax on interest, no dividends tax, no capital gains tax — ever, and on withdrawal too. SARS's own term is "tax-free investment", which is the more honest name: the wrapper can hold cash, but it's wasted on cash.

Contributions are made with after-tax money — a TFSA doesn't reduce this year's taxable income the way a retirement annuity does. Its entire advantage sits on the growth side, and that advantage compounds.

The 2026/27 limits, plainly

• Annual limit: R46,000 per tax year (1 March 2026 to 28 February 2027). That's R3,833 a month to max it.
• Lifetime limit: R500,000 — unchanged. This counts contributions only, never growth. An account can grow to R2 million and stay entirely tax-free; the cap only ever measures what you put in.
• Over-contribution penalty: 40% of the excess. Put in R56,000 in one year and SARS takes 40% of the R10,000 overshoot — R4,000 — in a product designed to never lose a cent to tax.

Two rules quietly catch people out. First, unused annual room does not roll over: contribute R20,000 this year and the other R26,000 is gone, not banked for later. Second, the limits belong to you, not the account — a TFSA at your bank and another at an investment platform share the same R46,000 and R500,000, and neither provider sees the other. SARS adds them up at assessment. That's exactly how accidental over-contributions happen.

What "tax-free" is actually worth

The phrase "tax-free" is easy to nod at and hard to feel. Here's the number.

Take someone maxing the annual limit — R3,833 a month — at a 10% long-term return, held for 20 years:

• Inside a TFSA: R2,934,916, of which R920,000 is your contributions and just over R2 million is growth — every rand of it tax-free.
• In an equivalent taxable account: the same contributions, but interest above R23,800 a year taxed at your marginal rate and capital gains taxed on withdrawal. Over 20 years that drag compounds into a materially smaller balance.

The gap is the whole point of the wrapper. It isn't dramatic in year one. It's decisive by year twenty — because the tax you didn't pay stayed invested and earned its own returns, every year, on top of itself.

Run your own contribution in the calculator to see your tax-free projection, and switch on the inflation toggle to see it in today's money.

How to Calculate TFSA Growth

Calculating TFSA growth requires using the standard compound interest calculator formula, adjusted for monthly contributions. Let's look at three realistic South African scenarios to see how different investment choices compound over time:

One thing to hold in mind throughout: because the lifetime cap is R500,000, maxing the annual limit is something you do for about eleven years, not forever. Projections that quietly assume R3,833 a month for twenty straight years are describing a TFSA you are not allowed to have. The scenarios below stop contributing at the cap.

Example 1 — Conservative (Bank Savings Rate)

Max the annual limit — R3,833 a month, R46,000 a year — into a bank-based TFSA earning a conservative 8%. After ten years you've contributed R459,960 and the balance is R705,907. A few months into year 11 you reach the R500,000 lifetime cap with roughly R801,184 in the account, of which R301,184 is growth you never paid tax on.

Run the contribution phase in CompoundCalc →

Example 2 — Growth (ETF / Broad Market)

Same R3,833 a month, but into a JSE or global equity ETF inside the wrapper at an expected long-run 11%. You reach the R500,000 cap with about R970,415. Then you stop contributing — and the balance keeps compounding tax-free: roughly R2.62 million by year 20 and R7.84 million by year 30, without another cent deposited.

Run the contribution phase in CompoundCalc →

Example 3 — Partial Contribution (Affordable Start)

If R3,833 a month is out of reach, contributing R1,500 monthly at an average annual return of 10% grows your TFSA to R1,148,545 after 20 years — on R360,000 of contributions, comfortably inside the lifetime cap the whole way. Consistent, smaller contributions still compound into a seven-figure balance.

Run this scenario in CompoundCalc →

Reaching the R500,000 cap — and what happens after

Max the annual limit every year and you hit the R500,000 lifetime cap in just under 11 years (R500,000 ÷ R46,000 = 10.9). Under the old R36,000 limit it took nearly 14 — so the 2026 increase pulls the finish line forward by roughly three years.

Here's the part that matters, and the part the shorter contribution window actually improves: once you hit the cap, you stop contributing — but the account doesn't stop growing. The balance keeps compounding tax-free with no further deposits and no further limit. Reaching the cap sooner means the compounding-only phase — the tax-free runway — starts sooner and runs longer.

At a 10% return, maxing R3,833 a month until the cap leaves you with R909,579 at the moment your last contribution lands, just under eleven years in. Leave it entirely alone from there — no further deposits — and by year 30 it compounds to R6,083,937. More than R5.1 million of that arrives after you stopped contributing, and none of it is taxed.

That's the quiet power of the wrapper: you do the work for eleven years, and tax-free compounding does the rest for as long as you leave it alone.

TFSA vs Regular Savings Account — The Tax Difference

Why not just use a standard savings account? The difference lies entirely in how taxes eat away at your compounding returns. In a regular savings account, any interest earned above R23,800 per year is taxed at your marginal rate (up to 45%). Additionally, a regular investment account attracts capital gains tax and a 20% dividends withholding tax.

When you don't lose a quarter of your gains to SARS every year, those saved tax rands remain in your account and compound year after year. Over a 20-year horizon, this tax exemption can easily translate to an extra R200,000 to R500,000 in your pocket.

Cash TFSA vs equity TFSA: the choice that matters most

The single biggest TFSA mistake isn't over-contributing — it's holding cash. A tax-free wrapper around a 6% bank account saves you tax on 6%. The same wrapper around a diversified equity ETF returning around 10% over the long run saves you tax on far more, for decades. The wrapper is most valuable exactly when it holds long-term growth assets.

Platforms like EasyEquities let you open a TFSA and hold ETFs from as little as R50, which is where many South Africans start. Whatever you choose, the rule holds: a TFSA is wasted on money you'll need next year, and most powerful on money you can leave for ten.

How to Use the CompoundCalc TFSA Calculator

CompoundCalc's suite of tools makes tax-free planning simple. Follow these steps to map out your compounding path:

1. Set Starting Principal to your current TFSA balance (or R0 if starting fresh).
2. Set Monthly Contribution to your planned monthly amount (up to R3,833/month to stay inside the R46,000 annual limit).
3. Set Annual Interest Rate to your expected rate of return (e.g., 8% for cash, 10–12% for equity ETFs).
4. Set Time Horizon in years (e.g., 10, 15, or 20 years).
5. Toggle the Inflation Adjustment to view your future balance in terms of today's purchasing power.
6. Click Calculate to view your year-by-year schedule.

If you have a specific financial target in mind, such as accumulating R1 million, switch to our investment goal calculator to reverse-engineer your required monthly savings rate.

Which Platforms Offer TFSAs in South Africa?

South African investors are spoiled for choice when it comes to TFSA providers. The most popular options include:

• EasyEquities TFSA: Highly recommended for retail investors. Offers access to equity, property, and interest-bearing ETFs with zero minimum balance and extremely low fees.
• Sygnia: Excellent for low-cost passive index tracking and unit trusts.
• Allan Gray: Ideal if you prefer actively managed multi-asset unit trusts.
• Ninety One: Offers premium actively managed funds.

Frequently Asked Questions

Summary

See what your TFSA could be worth. Enter your monthly contribution, expected return, and years — the calculator does the rest.