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Compound Interest Calculator

Project how your savings grow with compound interest, full SA tax treatment applied — including annual interest exemptions.

Your Details

Lump Sum (ZAR)

Monthly Contribution (ZAR)

Annual Interest Rate

Enter as decimal — e.g. 0.085 for 8.5%

Term — 5yr

1mo40yr

Your Age — 30

Interest exemption: R23,800/year

Marginal Tax Rate

Show inflation-adjusted value

Enter your details and click Calculate

Results show your projected growth with SA interest tax treatment applied year by year.

Tax note: Interest exemption of R23,800/year (under 65) or R34,500/year (65+) is applied. Tax is calculated annually on interest above the exemption at your selected marginal rate. Results are estimates — consult a tax practitioner for your specific situation.

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