💳 Credit Card Payoff Calculator
See how long it takes to pay off your credit card — and how much interest you can save with extra payments.
See how long it takes to pay off your credit card — and how much interest you can save with extra payments.
How long will it take to pay off my credit card?
Paying only the minimum on a typical credit card at 20% APR can stretch repayment past 15 years and cost more in interest than the original balance. Doubling the minimum payment usually drops the timeline to roughly four years. The avalanche method (highest APR first) minimises total interest when you have multiple cards.
| Month | Payment | Interest | Principal | Balance |
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How to use this calculator
Takes about 2 minutes.
- Enter your current credit card balance
- Add the APR shown on your most recent statement
- Set the monthly payment you currently make
- Add any extra monthly payment you can afford on top
- Click Calculate to see your debt-free date, total interest, and savings versus minimum payments
Try these scenarios
Tap a scenario to load it into the calculator above.
Key concepts
Why credit-card debt is uniquely bad. US average APRs sit above 20% as of 2026 (Federal Reserve G.19); UK averages run 22-24% APR; SA credit cards typically 18-25%. At these rates, a balance left to revolve doubles every 3-4 years if you only pay the minimum.
The minimum-payment trap. US minimums are typically 1-3% of the balance plus interest. On a $5k balance at 22% APR with a 2% minimum, you'd take almost 30 years to pay off and pay more in interest than the original balance — lenders are required by the CFPB to show this on US statements.
Daily compounding. Most cards apply interest daily based on your average daily balance. That means carrying a balance even partway through the cycle racks up interest from the transaction date if your prior balance wasn't paid in full.
0% balance-transfer cards. Many issuers offer 12-21 months at 0% on transferred balances for a 3-5% upfront fee. The maths almost always favours the transfer if you can clear the balance within the promo window. Miss it and the rate snaps back to a high regular APR.
Avalanche over snowball. Mathematically, paying highest-APR debt first (avalanche) saves the most money. Behaviourally, paying smallest-balance first (snowball) gives motivating quick wins. For card debt specifically, the APRs are high enough that the avalanche maths matters.
Worked example — R45,000 SA card balance
A Cape Town-based professional carries R45,000 on a major-bank credit card at 21% APR — within the NCA-regulated maximum of repo plus 14% (repo sat at 7.5% per the May 2026 SARB statement, so the cap is 21.5%). The card requires a minimum of 5% of balance per month, currently about R2,250. Bonus from a year-end review frees up an extra R1,500 a month they could throw at the card on top of the minimum.
Paying only the R2,250 minimum, the balance does fall — minimums on SA cards include principal, unlike the US 2% interest-plus-fees structure — but the early months are dominated by interest. Month one: R787 of the R2,250 goes to interest at (21% ÷ 12) on R45,000, leaving R1,463 against principal. Across the whole payoff at R2,250 a month, total interest works out to roughly R6,200 and the balance clears in 23 months. Add the extra R1,500 to make it R3,750 a month, and the schedule collapses to 13 months with about R3,400 in total interest — saving roughly R2,800 and ten months.
Worth noting: the saving is bigger than it looks because most SA cards also charge a monthly service fee (typically R69-R85) which keeps running until the card is closed or kept at zero. Ten extra months of fees is another R700-R850 quietly removed by paying the card off faster. Anyone running the calculator above on an SA card should mentally add that fee to the total cost of the slow path.
Common mistakes
- Treating the cleared limit as a fresh emergency fund. Once a R45,000 card is back at zero, the limit feels like "free money for emergencies". It isn't — it's still 21% APR debt the moment you touch it. Pair every card payoff with a parallel R5,000-R10,000 cash starter fund so the available limit never has to be used.
- Paying the higher-balance card instead of the higher-rate card. The avalanche method always pays the highest-APR card first, even if its balance is smaller. People reflexively attack the bigger number because it feels more urgent, and pay several thousand rand extra in interest as a result.
- Underestimating the impact of even R500 extra. On the R45,000 example above, adding just R500 to the minimum cuts roughly five months and R1,200 in interest. People dismiss small extras as "not enough to matter" — at 21% APR every rand of extra principal earns you a guaranteed 21% return for as long as the balance would have run.
- Missing the s103(5) NCA early-settlement right. Under the National Credit Act, SA consumers can settle a credit agreement at any time without penalty — request a settlement letter directly from the issuer. Many borrowers mistakenly believe they have to pay the full scheduled interest and overpay by thousands.
- Closing the card the day it hits zero. Closing reduces total available credit and shortens credit history, both of which dent the credit score for new home loans or vehicle finance. Keep the card open with a R0 balance for at least 12 months after payoff if a major credit application is coming.
Frequently Asked Questions
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