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Credit Card Interest Calculator

Calculate how much you'll be charged on your credit card . Understand the real cost of carrying a balance and make informed decisions about your .
Enter your outstanding balance, your card's annual interest rate (APR), and the number of days in your billing cycle. After inputting these values, the calculator will provide you with an estimate of your monthly interest charges, empowering you to make informed decisions about managing your credit card debt.
$
%
days
You will pay
$
in interest this month.

Understanding Monthly Payments

How This Calculator Works

Enter your credit card's current , its , and how many days in your . The calculator will determine your required monthly payment to reach that goal, assuming you don't make any new purchases during the payoff period.

What's Included in the Calculation

  • calculations
  • Monthly interest accrual
  • Fixed payment amount each month
  • Total payoff within your specified timeframe

Important Considerations

  • The calculation assumes you won't make additional purchases
  • Paying more than the calculated amount will reduce your payoff time
  • Your might be lower, but will take longer to pay off
  • Interest rates are assumed to remain constant

Key Terms & Definitions

Current Balance

The total amount you currently owe on your credit card, including any unpaid purchases and previously accumulated interest. This is the amount used to calculate your interest charges.

Monthly Payment

The amount you pay each month toward your credit card balance. Making larger payments reduces the total interest you'll pay and helps you become debt-free faster.

Compound Interest

Interest calculated on both the initial principal and the accumulated interest from previous periods. This means you're paying interest on interest, which can make debt grow faster than simple interest.

Annual Percentage Rate (APR)

The yearly interest rate charged on credit card balances. While APR is quoted as an annual rate, credit card companies use it to calculate interest charges on a daily basis.

Billing Cycle

The period between billing statements, typically around 30 days. This is the timeframe used to calculate your interest charges and determine payment due dates.

Finance Charges

The total amount of interest and fees charged to your credit card in a billing cycle. This includes interest on purchases, balance transfers, and cash advances.

Minimum Payment

The smallest amount you must pay each month to keep your account in good standing. While this amount is lower, paying only the minimum will result in much more interest paid over time and a longer payoff period.