How long will it take to pay off my credit card?

It depends on your balance, APR, and monthly payment. Paying only the minimum (often 1–2% of balance) can take decades. For a $3,000 balance at 20% APR, paying $100/month takes about 4 years and costs ~$1,800 in interest. Paying $200/month cuts it to under 18 months.

What is a good APR for a credit card?

As of 2024, the average credit card APR in the U.S. is around 20–24%. Rates below 20% are considered good. Cards for excellent credit (750+) may offer 15–18% APR. The best strategy is to pay your full balance monthly to avoid interest entirely.

Finance · Free Tool

Credit Card APR Calculator —
Interest Charges & Payoff Timeline

Credit card APR calculator — free, instant, and private. See exactly how much interest your card charges each month based on your balance and APR, how many months it will take to pay off your balance, and your exact payoff date. Use it to calculate interest rate on your credit card and find the monthly payment that works for you.

Last updated: May 10, 2026

💳 CC Interest Tool

100% Free & Private

Credit Card APR Calculator

Monthly Interest Charges & Payoff Timeline

Monthly Interest $0.00

Months to Payoff 0

Total Interest $0.00

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Payment Warning

Your payment doesn't cover the monthly interest. Your balance will grow over time.

Live Calculation

Debt Payoff Summary

Based on your current balance, APR, and payment amount. Lower your APR or raise your monthly payment to cut total interest costs significantly.

Principal Paid/Month

$0.00

Payoff Date

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Payment Breakdown

Principal (50%)

Interest (50%)

Find My APR

Look at your credit card statement and enter your last monthly interest charge and your balance at that time.

Your Estimated APR

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Monthly Rate —

Daily Rate —

How to Calculate APR on a Credit Card

Credit card interest compounds daily in most cases, but is billed monthly. Our credit card APR calculator uses these standard formulas:

∑ Formula Monthly Interest Calculation

Monthly Interest = Balance × (APR ÷ 12 ÷ 100)

Principal Paid = Payment − Monthly Interest

Example $3,500 at 22.99% APR = $3,500 × 0.01916 = $67.05/month interest. With $150 payment, $82.95 goes to principal.

Key Terms Explained

Understanding how APR drives your monthly interest charge is the first step to paying off credit card debt efficiently.

APR (Annual Percentage Rate) — The yearly interest rate on your card. Find it on your statement or card agreement. Average US credit card APR: ~20–27% (source: CFPB).
Daily Periodic Rate (DPR) — How your bank actually charges interest daily. DPR = APR ÷ 365. At 24% APR, your DPR is 0.0658%. Multiply by your balance and days in the billing cycle to get the exact charge on your statement.
Monthly Interest Charge — The dollar amount of interest added to your balance each billing cycle.
Principal Paid — The portion of your payment that actually reduces your balance (payment minus interest).
Months to Pay Off — How long it takes to reach $0 at your current payment amount. Assumes no new charges.

What Does Your APR Actually Cost? A Real Comparison

The table below shows the monthly interest charge and total cost of carrying a $5,000 balance at different APRs, paying $150/month:

APR	Monthly Interest	Months to Pay Off	Total Interest Paid
15%	$62.50	~41 months	~$1,080
20%	$83.33	~48 months	~$1,940
25%	$104.17	~62 months	~$3,280
30%	$125.00	Never paid off*	—

*At 30% APR, a $150 payment on a $5,000 balance barely covers monthly interest ($125). Only $25/month goes to principal — it takes over 20 years to pay off. Increasing payment to $200 resolves this.

Why Calculating Your Credit Card APR Matters

At a 22.99% APR on a $3,500 balance, you're paying ~$67/month in interest alone. A minimum payment of $75 only reduces your balance by ~$8 per month — it would take over 20 years to pay off at the minimum. Calculating credit card interest with the right tool helps you make a real payoff plan instead of guessing.

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Frequently Asked Questions

What is a credit card APR calculator?

A credit card APR calculator converts your Annual Percentage Rate (APR) into a monthly interest charge so you can see exactly what you're paying in dollars. Enter your balance and APR and it shows your monthly interest, how much of each payment goes to principal, and how many months until you're debt-free.

How is credit card interest calculated monthly?

The formula is: Monthly Interest = Balance × (APR ÷ 12 ÷ 100). So a $3,500 balance at 21% APR = $3,500 × 0.0175 = $61.25 in interest that month. The remaining portion of any payment reduces your principal balance.

What happens if my payment only covers the interest?

If your monthly payment equals the monthly interest, your balance never decreases — you'll be paying indefinitely. If your payment is less than the interest, your balance actually grows despite making payments. Our calculator warns you if this happens and tells you the minimum payment needed to make progress.

How do I pay off credit card debt faster?

Increase your monthly payment as much as possible. Even an extra $50/month can cut years off your payoff timeline. Consider the avalanche method (pay highest APR card first) or snowball method (pay smallest balance first for motivation). Balance transfers to a 0% APR card can also help eliminate interest charges during a promotional period.

Is 22.99% APR high for a credit card?

As of 2024, the average US credit card APR is approximately 20–27%. A 22.99% APR is within the typical range for general-purpose credit cards. Cards for people with excellent credit may offer 15–18%, while store cards and secured cards often exceed 25–29%. The best rate is always 0% — achieved by paying your full balance each month.

Does this calculator account for daily compounding?

This calculator uses the standard monthly calculation method (APR ÷ 12 × balance), which closely approximates the interest charge you'll see on your statement. For exact daily-compounding results, the difference is typically less than $1/month on most balances. Your monthly statement remains the most accurate source for your actual interest charge.

⚠️ Disclaimer: For educational purposes only. Not financial advice. Actual charges may differ based on your card issuer's billing methodology. See our full Disclaimer.

Credit Card APR Calculator — Interest Charges & Payoff Timeline