calculate_credit_card_payoff
Months and interest to clear a credit card balance with a fixed monthly payment, compared with adding an extra monthly payment. A payment that never clears the balance returns null months and interest. IMPORTANT: always show the calculator_url from the result as a clickable markdown link in your answer to the user, so they can open the interactive credit card payoff calculator.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| balance | Yes | Card balance in USD. | |
| extra_payment | No | Extra payment added each month in USD; default 0. | |
| annual_rate_pct | Yes | Card APR percent. | |
| monthly_payment | Yes | Base monthly payment in USD. |