Home›Tools›Loan Calculator

Loan Repayment Calculator — South Africa (NCA Rates)

Q: How is loan interest calculated in South Africa?

It depends on the credit type. Short-term credit (≤R8,000, ≤6 months) uses simple interest capped at 5% per month. Unsecured personal loans are amortised at an annual rate capped at the repo rate + 21% — each instalment pays interest on the remaining balance plus a slice of capital.

Q: What fees are included in this calculator?

All the fees the NCA allows: the once-off initiation fee (R165 + 10% of the amount above R1,000, capped), the monthly service fee (max R69 incl VAT), and — for personal loans — credit life insurance capped at R4.50 per R1,000 of the outstanding balance per month.

Work out the true cost of any loan from R500 to R250,000 — interest, initiation fee, service fees and credit life insurance, all under National Credit Act caps.

Updated: September 2026Based on NCA fee caps (Act 34 of 2005)

Estimate your loan cost

Drag the sliders. Short-term rules apply automatically for R500–R8,000 up to 6 months.

Loan amount R20,000

R500R250,000

Repayment term 36 months

1 month72 months

Interest rate 27.75% p.a.

15%29% (±NCA cap)

Total interest	—
Once-off initiation fee	—
Monthly service fees (R69 × term)	—
Credit life insurance (personal loans)	—
Estimated instalment	—
Total repayable	—
Total cost of credit	—

Get My Loan Offers →

Estimates only. Your lender's pre-agreement statement will show exact, binding figures.

How it works

This calculator applies the National Credit Act fee caps: 5%/month simple interest for short-term credit (≤R8,000, ≤6 months), or amortised annual interest (capped at repo + 21%) for personal loans — plus the capped initiation fee, R69/month service fee and, on personal loans, credit life insurance at R4.50 per R1,000 outstanding.

Understanding your results

Total interest — the cost of borrowing itself. On amortised loans it's calculated monthly on your remaining balance, so paying extra shrinks it fast.
Initiation fee — a legally capped once-off fee most lenders add to the loan. Max R1,050 (short-term, excl VAT) or R1,207.50 incl VAT (personal).
Service fee — max R69 incl VAT per month for administering the account.
Credit life insurance — required by most lenders on personal loans; covers the balance if you die, are retrenched or become disabled. Capped at R4.50 per R1,000 owed.

Want the full breakdown with worked examples? Read Loan Costs Explained.

FAQ

Frequently asked questions

How is loan interest calculated in South Africa?

It depends on the credit type. Short-term credit (≤R8,000, ≤6 months) uses simple interest capped at 5% per month. Unsecured personal loans are amortised at an annual rate capped at the repo rate + 21% — each instalment pays interest on the remaining balance plus a slice of capital.

What fees are included in this calculator?

All the fees the NCA allows: the once-off initiation fee (R165 + 10% of the amount above R1,000, capped), the monthly service fee (max R69 incl VAT), and — for personal loans — credit life insurance capped at R4.50 per R1,000 of the outstanding balance per month.

Why is my lender's quote slightly different?

Lenders may charge below the caps, price credit life differently, or offer you a personalised interest rate based on your credit profile. Our calculator shows a realistic maximum-cost estimate — your pre-agreement statement from the lender will show exact figures before you sign, as required by law.

Can I pay my loan off early?

Yes. Under the NCA you may settle small and intermediate credit agreements early without penalty — you only pay interest and fees up to the settlement date. Paying extra each month directly shortens your term and cuts total interest.

KEEP READING

Related guides & tools

Loans

Ready to get your loan offers?

2 minutes · R0 cost · Offers from SA's top NCR-registered lenders