Use this fixed deposit calculator tool to estimate how much your deposit could be worth at maturity. Enter your deposit amount, interest rate, and term to see the maturity value, interest earned, and the effective annual rate (EAR).
Fixed deposit calculator (South Africa)
Estimate the maturity value of a fixed deposit using your interest rate, term, and compounding. You can also include withholding tax to see an after-tax estimate.
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How fixed deposits work in South Africa
A fixed deposit is a savings product where you invest money for a set period at an agreed interest rate. In return, the bank typically restricts access to your funds until maturity, although some products allow early withdrawals with penalties. A fixed deposit can be useful when you want predictable returns and lower risk than market-linked investments.
What this fixed deposit calculator South Africa tool shows
- Maturity value: your initial deposit plus the interest earned over the term.
- Interest earned: the estimated gross interest for the full period.
- Effective annual rate (EAR): the annualised return after compounding.
- After-tax estimate (optional): a simplified view of what you could receive after tax on interest.
Simple interest vs compounding
Some fixed deposits pay interest only at maturity. Others compound interest monthly or quarterly. Compounding can increase your returns because you earn interest on interest. If your product compounds, compare offers using EAR rather than the nominal rate.
Tax on interest in South Africa
Interest earned on a fixed deposit may be taxable. The taxable amount can depend on exemptions and your personal tax position. This calculator includes an optional tax estimate to help you plan, but it does not replace tax advice.
How to compare fixed deposit offers
- Compare the rate and compounding frequency.
- Check the term and whether you can access funds early.
- Ask about fees and early withdrawal penalties.
- Consider whether interest is paid out monthly or reinvested.
FAQ: fixed deposit calculator South Africa
What is a fixed deposit?
A fixed deposit is a savings product where you invest money for a fixed term at a set interest rate. Access is usually restricted until maturity.
Is the interest rate on a fixed deposit guaranteed?
Many fixed deposits offer a fixed rate for the term. However, always confirm product terms, as some rates can be conditional.
What is the difference between nominal rate and effective annual rate (EAR)?
The nominal rate is the quoted annual rate. EAR reflects the impact of compounding. If interest compounds, EAR will be higher than the nominal rate.
Can I withdraw from a fixed deposit early?
Some products allow early withdrawal, but the bank may charge a penalty or reduce your interest. Check the product rules before investing.
Is interest from a fixed deposit taxed in South Africa?
Interest may be taxable depending on your circumstances and applicable exemptions. If in doubt, confirm with SARS guidance or a tax practitioner.
Disclaimer: This calculator provides estimates for informational purposes only. It does not constitute financial, tax, or investment advice. Product terms differ by institution, and actual interest calculations may vary.
