Credit Card Interest Calculator
Use this credit card interest calculator to estimate the interest charged on a carried balance using your APR and billing-cycle length. You can also see the approximate daily rate, monthly rate, annual interest reference, and the effect of different APRs.
| Average Daily Balance ($) | |
| APR (%) | |
| Billing Cycle (days) |
How to Use the Credit Card Interest Calculator
Enter your average daily balance, APR and billing-cycle length to estimate the interest charged for that period.
Practical Example
With an average balance of USD 5,000, a 24% APR and a 30-day cycle, the estimated interest is about USD 98.63.
Factors That Affect the Result
Actual interest can vary because balances change daily, multiple APRs may apply, grace periods differ, and fees or promotional rates can affect the statement total.
Frequently Asked Questions
Does APR equal the monthly rate?
No. APR is annual; monthly or daily rates are derived from it.
Can my statement interest differ?
Yes. Issuers may use daily balances and account-specific rules.
Does this include fees?
No. It estimates interest only.