How it works
Monthly interest = opening balance × annual rate/12; subtract a fixed cent-rounded payment until paid off.
Input definitions
- Current card balance
- Enter the value in the labeled unit.
- Annual interest rate (%)
- Enter the value in the labeled unit.
- Fixed monthly payment
- Enter the value in the labeled unit.
A worked example
- Current card balance
- 1200
- Annual interest rate (%)
- 0
- Fixed monthly payment
- 100
Assumptions & limits
Single-currency planning model using entered rates; two-decimal half-up currency rounding. No taxes, regulatory APR, live quote or investment-return prediction unless explicitly stated. Fixed rate and payment, no purchases, fees or cash advances. Does not calculate a changing minimum-payment policy.
Sources & review
Maintained by AnsRio. Methods and examples use automated checks; this does not imply independent professional certification.
Method updated 2026-10-17. Content checked against the stated method and examples. Our verification approach.
Common questions
Are these investment and borrowing results guaranteed?
No. These are deterministic estimates from the inputs and stated method, not predicted returns or lending offers. Actual fees, tax, timing and contractual terms may differ.
How does the Credit card payoff time tool work?
Monthly interest = opening balance × annual rate/12; subtract a fixed cent-rounded payment until paid off.
What are the assumptions and limits of Credit card payoff time?
Single-currency planning model using entered rates; two-decimal half-up currency rounding. No taxes, regulatory APR, live quote or investment-return prediction unless explicitly stated. Fixed rate and payment, no purchases, fees or cash advances. Does not calculate a changing minimum-payment policy.