Interest Calculator South Africa 2026 (Bank Savings & Fixed Notice Deposits)
Compute returns on South African bank savings, 32-day notice accounts, and RSA Retail Savings Bonds with statutory SARS annual interest exemption thresholds in ZAR.
South Africa · Interest Calculator South Africa
Methodology
Calculates simple and compound interest for South African savings, money market, and notice deposits. Features SARS statutory interest exemption under section 10(1)(i) (R23,800/yr for age <65; R34,500/yr for age 65+). Computes gross interest, exempt amount, taxable interest, and net return after marginal income tax.
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User-provided inputs
This calculator uses only the values you enter. It does not automatically apply tax law, statutory deductions, lender fees, or live exchange rates.
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Formula basis
The formula is shown openly and no country rate is inserted automatically.
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Your estimate
AfricalHub is an independent private platform not affiliated with any government agency. Calculations are for educational planning only. Verify official filings with the relevant revenue authority or a qualified professional.
Sources
User-provided inputs
This calculator uses only the values you enter. It does not automatically apply tax law, statutory deductions, lender fees, or live exchange rates.
Frequently asked questions
What is the difference between simple and compound interest in South Africa?
Simple interest is calculated solely on the principal deposit. Compound interest is reinvested periodically, earning interest on interest.
How are interest earnings taxed by SARS in South Africa?
Interest above the annual exemption threshold (R23,800 for under 65, R34,500 for 65 and older) is added to your taxable income and taxed at your marginal PAYE rate.
What is an RSA Retail Savings Bond?
RSA Retail Savings Bonds are secure government-backed investments issued by National Treasury offering fixed or inflation-linked returns for 2, 3, or 5-year terms.