SIX CALCULATIONS, ONE STATEMENT
Credit card payoff calculator — fixed payment vs minimum payment
Model simple interest, compound growth, a loan's monthly repayment, a recurring savings plan, a credit card payoff or a multi-debt strategy — then read the result the way your bank or payroll department would print it, penny for penny.
Credit card payoff
Revolving balance, not a fixed installment — interest is charged on whatever's left, so how you pay changes the payoff time dramatically.
Card APRs are usually quoted as a nominal annual rate, applied monthly on the outstanding balance.
Most issuers charge whichever is greater: a flat floor or a percentage of the balance. The required payment shrinks every month as the balance falls — this is the "minimum payment trap."
Full breakdown
Every period, principal-versus-interest split and running balance — the same shape as an amortization table from a bank.
Why the number should match your statement
Per-period rounding, not end rounding
Interest and principal are rounded to the cent on every single period, exactly as a bank's ledger does — not calculated in full precision and rounded once at the end, which is where most quick calculators drift from a real statement.
Real-world day-count rules
Simple interest supports both actual/365 and actual/360 conventions. Loans use standard reducing-balance monthly compounding. These are the same conventions written into most consumer credit agreements.
Every formula, shown in the open
No black box. The methodology panel below spells out exactly which formula ran, with your own numbers substituted in, so you can check it line by line against a payslip or bank letter.