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How to pay off credit card debt faster, and what each method actually costs
There are two sensible ways to attack multiple balances. One is cheaper on paper. The other is the one more people finish.
The avalanche method pays the highest interest rate first and costs the least overall. The snowball method pays the smallest balance first and produces a visible win sooner. Avalanche wins on arithmetic; snowball wins on follow-through. The cheapest plan is the one you actually complete.
Why minimum payments are the trap
A minimum payment is calculated to keep the account current, not to clear it. Because it is usually a small percentage of the balance plus interest, it shrinks as the balance shrinks — which stretches repayment across years and means most of what you pay early on is interest. Paying any fixed amount above the minimum changes the shape of that curve dramatically.
The avalanche method
Pay minimums on everything, then put every spare dollar at the balance with the highest interest rate. When it clears, roll that payment onto the next-highest. This is mathematically optimal: it always costs the least total interest and clears everything soonest.
The snowball method
Pay minimums on everything, then attack the smallest balance regardless of rate. When it clears, roll that payment onto the next-smallest. It costs more in interest than avalanche, sometimes meaningfully, but it removes an entire account early — and the evidence on debt repayment is that visible progress is what keeps people going.
Which to choose
If the interest rates are close together, snowball costs you very little and is easier to sustain. If one balance carries a much higher rate than the others, avalanche's advantage becomes large enough to be worth the patience. Run both on your own numbers before deciding — the gap is sometimes trivial and sometimes hundreds of dollars.
Things that speed either method up
- Stop adding to the balance. No plan outruns continued spending on the same card.
- Ask for a lower rate. Issuers sometimes reduce APR for customers with a good payment record. It is a phone call.
- Consider a balance transfer carefully. A 0% window can help, but the transfer fee and what the rate becomes afterwards decide whether it actually does.
- Pay more than once a month. Interest accrues daily, so paying fortnightly reduces the average balance it accrues on.
What carrying a balance actually costs
At a typical card APR, a balance carried for a year costs roughly a fifth of itself in interest — and because the payment order applies interest first, the balance moves far more slowly than the payments suggest. Seeing that number for your own balance is usually more motivating than any general advice.
Run your own payoff numbers → The APR tool shows what a balance costs you per month and how long payoff takes.Common questions
Is avalanche or snowball better?
Avalanche costs less in total interest. Snowball clears an account sooner and is easier to stick to. If the rates are similar the difference is small; if one rate is much higher, avalanche's advantage grows.
Why does paying the minimum take so long?
The minimum is set to keep the account current, not to clear it, and it shrinks as the balance does. Most of an early minimum payment goes to interest.
Does a balance transfer help?
It can, if the 0% window is long enough to clear a meaningful share of the balance and the transfer fee is smaller than the interest avoided. Check what the rate becomes after the window.
Should I close a card once I pay it off?
Usually not. Closing it removes available credit, which raises your utilisation, and reduces your average account age.
Does paying twice a month help?
Slightly. Card interest accrues daily, so paying more often lowers the average balance it accrues against.
Educational information only — this is not financial advice, and JagInsights is not a financial adviser, broker or lender. See our Terms and Privacy Policy.