🇿🇦 TFSA Calculator (South Africa)

Project your tax-free TFSA growth with the R36,000 annual cap and R500,000 lifetime cap enforced. SARS s12T rules applied.

A TFSA calculator shows how much your South African tax-free savings account could grow when every cent of interest, dividends, and capital gains is exempt from tax. Enter a monthly or annual contribution and an expected return, and it projects the balance to your target date while keeping you inside the contribution limits set by SARS.

The projection compounds your contributions forward at the growth rate you choose. What a TFSA adds over an ordinary investment account is purely the tax treatment: no income tax on interest, no dividends withholding tax, and no capital-gains tax when you withdraw. Two SARS limits matter, and the calculator helps you respect them — an annual contribution cap (R36,000 at the time of writing) and a R500,000 lifetime cap. Going over either limit is penalised heavily, so the tool is as much about staying compliant as about projecting growth.

Worked example. Contribute the full R3,000 a month (R36,000 a year) until you reach the R500,000 lifetime limit — about 14 years — then leave the balance to grow at 9% a year. By retirement the tax-free pot can be worth well over R1 million, with every rand of growth exempt from the tax a normal unit trust or savings account would pay. Starting earlier, even with smaller amounts, lets compounding do far more of the work.

Exceeding the annual or lifetime limit triggers a 40% SARS penalty on the excess. Contribution limits and rules are set by SARS and can change — confirm the current figures before relying on them. Projections are illustrative estimates for education only, not financial advice.

Enter Your Details

Current TFSA Balance (R)

Lifetime Contributions To Date (R) Total ever contributed to any TFSA (across all providers).

Annual Contribution (R) SARS annual cap: R36,000.

Current Age

Years Invested

Expected Annual Return (%)

Your Results

Tax-Free Balance

Total Contributions Over Period

Total Tax-Free Growth

R0 of R500 000 (0%)

Lifetime Allowance Used

Not reached

Year You Hit Lifetime Cap

Year-by-Year Projection

Year	Age	Contribution	Cumulative Lifetime	Year-End Balance

How to use this calculator

Takes about 2 minutes.

Enter your current TFSA balance and how much you've contributed in total to date
Set your intended annual contribution (capped at R36,000)
Add your age and how many years you'll keep contributing
Pick an expected real return (5–7% is typical for a balanced equity portfolio)
Review your tax-free balance, lifetime allowance used, and the year you hit the R500,000 cap

Try these scenarios

Tap a scenario to load it into the calculator above.

Methodology & Sources

This calculator applies South Africa's Tax-Free Savings Account (TFSA) rules from Section 12T of the Income Tax Act 58 of 1962. The annual contribution cap is R36,000 and the lifetime cap is R500,000 — unchanged since 1 March 2020. Any contribution above either cap is taxed at 40% under s12T(7). Growth (interest, dividends, capital gains) inside the TFSA is fully tax-free.

The projection uses mid-year compounding to approximate even monthly contributions: balance = balance × (1 + r) + contribution × (1 + r/2). When a year's contribution would breach the lifetime cap, it is clipped to the remaining allowance.

Last verified: May 2026.

Key concepts

The R36,000 annual cap. South African TFSAs allow contributions up to R36,000 per tax year (1 March - end February) with a R500,000 lifetime cap (SARS). Excess contributions are penalised at 40% — one of the harshest tax-wrapper penalties globally.

Tax-free interest, dividends, capital gains. All growth inside a TFSA is exempt from income tax, dividend withholding tax (normally 20%), and capital gains tax (effective 18% for individuals). Withdrawals are tax-free at any age.

Withdrawals don't restore allowance. Unlike some flexible ISAs, if you withdraw R50,000 from your TFSA, that R50,000 still counts against your lifetime R500,000 cap. The annual R36,000 cap also can't be backdated. Treat the TFSA as a long-term tax shelter, not a flexible savings account.

Underlying investment matters. A TFSA is a wrapper, not an investment. You can hold cash, money market, unit trusts, ETFs, or eligible individual shares inside it. For a 20-30 year horizon, an equity ETF (e.g. Satrix Top 40 or a global tracker) typically produces meaningfully higher tax-free growth than a cash TFSA.

Combine with retirement annuity. A TFSA and an RA solve different problems. RA contributions reduce taxable income today (up to 27.5% / R350k cap) but are locked to age 55. TFSA contributions are post-tax but accessible at any age. Most planners fund both — RA for tax deduction, TFSA for liquidity and post-retirement tax management.

Frequently Asked Questions

What is the TFSA contribution limit for 2026?

R36,000 per year and R500,000 in your lifetime, set by Section 12T of the Income Tax Act and unchanged since 1 March 2020. At the maximum R36,000 a year, you'll hit the lifetime cap in 13 years and 11 months.

What happens if I contribute more than R36,000?

Excess contributions are taxed at 40%. SARS Section 12T(7) imposes the penalty on any amount above either the annual or lifetime cap. The penalty applies even if you withdraw the excess in the same tax year — withdrawals do not restore your allowance.

Can I withdraw from my TFSA?

Yes, anytime, with no tax. But any withdrawal is permanent for cap purposes — the contribution slot is used up. If you contributed R36,000 and withdrew R30,000, your remaining annual room is R0 (not R30,000), and the withdrawal still counts against your lifetime R500,000.

TFSA vs Retirement Annuity (RA) — which first?

Both are valuable. RAs give an upfront tax deduction (up to 27.5% of taxable income) but are locked until 55+ and partly taxable on payout. TFSAs have no deduction but everything is tax-free forever. Most planners recommend: contribute to RA up to your tax-deduction sweet spot → max the TFSA → return to RA. The TFSA shines for medium-term goals (10–20 years) and as a tax-free emergency fund.

What investments can I hold in a TFSA?

Cash, unit trusts, ETFs, REITs, government bonds, and approved fixed-deposit products. Direct-share TFSAs (e.g. EasyEquities) and fund-based TFSAs (e.g. Allan Gray, Ninety One) are both common. The R36k cap is the same regardless of the underlying investment.

SA-only — what's the closest UK/USA equivalent to a TFSA?

UK: Stocks & Shares ISA (£20,000/yr, ~R460k at 2026 rates — much more generous than the R36k TFSA limit) with no lifetime cap. USA: Roth IRA ($7,000/yr, ~R130k — closer to TFSA in size) with income phase-out; no lifetime cap but a 59½ qualified-withdrawal age. The TFSA's R500,000 lifetime cap is the harshest restriction of the three — once hit, your only options for further tax-free growth are inside the existing account.

What's the most common TFSA mistake?

Withdrawing then trying to 'replace' the contribution. Unlike a flexible UK ISA, SA TFSA withdrawals are permanent for cap purposes — contributed R36k, withdrew R10k, then contributing R10k more in the same year is treated as a R10k excess and taxed at 40%. The second-most-common mistake is leaving the TFSA in cash earning 6% when an equity unit trust would compound at 10–12% — the tax shelter only matters if returns are substantial.

What if I'm close to the R500,000 lifetime cap?

Once you hit the cap, no further contributions are allowed for life — even if you withdraw and re-contribute. The account continues to grow tax-free indefinitely (the cap is on contributions, not balance), so it's actually optimal to leave funded TFSAs untouched and let them compound for decades. Hitting the cap by age 35 with maximum contributions gives 30+ years of tax-free compounding — potentially R4m+ at retirement at 7% real.

I've maxed my TFSA this year — what's next?

Order: TFSA → employer pension/provident fund (capture any employer match) → top up to the 27.5%/R350k RA cap → discretionary investments. For under-65s with less than R23,800/yr of taxable interest, a unit trust outside the TFSA is also tax-efficient because of the annual interest exemption. Don't put cash-equivalent investments in a TFSA — waste the wrapper on higher-growth equity instead.

TFSA vs RA — which builds more wealth?

RA wins on the way in (deductible — saves up to 45% in tax in the year of contribution), TFSA wins on the way out (all withdrawals tax-free vs RA's mix of tax-free lump sum + taxable annuity). For high-marginal-rate earners, RA usually edges out over a 30-year horizon. For low-marginal-rate earners, TFSA edges out. Most planners recommend both — RA for the deduction, TFSA for the tax-free withdrawal flexibility.

Written and maintained by James Blanckenberg, Founder & Editor, FinCalcHub.

Last reviewed: 17 May 2026 · See editorial policy