Credit Card Payoff

Calculate how long to pay off credit card debt and total interest cost. Compare minimum vs extra payments to find the fastest payoff strategy.

How it works

Payoff months = −log(1 − r × P / M) / log(1 + r), where r = monthly APR, P = balance, M = monthly payment.

Worked example

A $5,000 balance at 22% APR with $150/month payments takes ~54 months to clear, with ~$2,900 in interest. Bumping to $250/month cuts it to 25 months and $1,150 in interest.

Frequently asked questions

Why do minimum payments trap people?

Minimum payments cover mostly interest. On $5,000 at 22% APR with 2% minimums, payoff takes over 20 years and costs more than the original balance in interest.

Should I pay off cards before investing?

Yes — a 22% guaranteed 'return' from paying off a card beats any expected market return. Always clear high-APR debt first.

What is a balance transfer?

Move debt to a 0% intro-APR card (usually 12–21 months) for a 3–5% fee. Break-even at ~4 months of interest saved.

Does closing a card hurt my credit?

Yes — it lowers your credit utilisation limit and shortens average account age. Better to keep old cards open with a small recurring charge.

What is APR vs APY?

APR is the annual rate. APY includes compounding — the true cost. A 22% APR compounding daily is ~24.6% APY.