Credit Card Payoff Calculator

See how long it will take to pay off a credit card balance.

Reviewed by The QuickCalc Editorial Team · Last updated · About our methodology

Enter your details

Result

Months to clear
25 months
Total interest: R5 000,00

Inputs & results at a glance

Updates live as you change the form above.

ItemTypeValue
BalanceInputR20 000,00
RateInput20%
Monthly paymentInputR1 000,00
Months to clearResult25
Total interestResultR5 000,00

About this calculator

This calculator tells you exactly how long it will take to clear a credit card balance at a given monthly payment, and how much interest you'll pay in the process. Enter the outstanding balance, the annual interest rate on the card and the monthly amount you can afford to pay.

Credit card interest is charged monthly on the outstanding balance. If your monthly payment doesn't exceed the interest charged, the balance never reduces and the debt effectively becomes permanent. That's why paying only the minimum (typically 3–5%) on a South African credit card at 18–22% can leave you paying for years on relatively small balances.

The best strategy is almost always to pay as much above the minimum as you can afford, and to stop new spending on the card until it's cleared. If the interest rate is very high, consider consolidating to a personal loan at a lower rate — most personal loans in South Africa price at 16–22% versus 18–22% for cards, and the fixed schedule imposes discipline. Use our Loan Calculator to compare.

How to use it

  1. 1Enter the balance. The current outstanding balance on the card.
  2. 2Enter the interest rate. The annual rate charged on the card.
  3. 3Enter your monthly payment. The amount you plan to pay each month.
  4. 4Read the payoff period. The number of months to clear the debt and total interest.

How it works

Each month, the credit card charges interest at (annual rate ÷ 12) on your outstanding balance. Your payment covers that interest first; whatever remains reduces the principal. The calculator iterates month by month until the balance reaches zero, telling you both the number of months required and the total interest paid.

If your monthly payment doesn't exceed the interest charge, the balance never reduces. That's why paying only the 3–5% minimum required by most South African card issuers can stretch a payoff to decades. Every rand paid above the minimum shortens the term dramatically.

Formula

n = −log(1 − (r × B) / P) / log(1 + r)

B = balance; P = monthly payment; r = monthly rate (annual ÷ 12); n = months to clear the balance.

Worked examples

R20,000 at 20%, paying R500/month

≈ 62 months (5.2 years) to clear, total interest ≈ R11,000.

Same balance paying R1,000/month

≈ 24 months (2 years), total interest ≈ R4,400.

Frequently asked questions

Why does the minimum payment take so long?

Card issuers typically set minimums at only 3–5% of the balance. Most of that goes to interest, leaving very little to reduce the actual debt.

What interest rate should I use?

South African credit cards typically charge 15–22% annually. Check your statement for the exact APR.

Should I pay more than the minimum?

Absolutely. Even an extra R200/month can cut years off the payoff period and save thousands in interest.

Should I consolidate my card debt?

A personal loan at a lower rate (16–20%) is often cheaper than card debt (18–22%) — see our Loan Calculator to compare.

What happens if I only pay interest?

You never reduce the principal. At 20% on R20,000 that's R333/month forever, and the debt never goes away.

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