Question 1

Can I model multiple debts?

Accepted Answer

Sum balances and use a weighted-average APR for a quick combined view, or run each debt separately.

Question 2

What payment guarantees payoff?

Accepted Answer

Monthly payment must exceed the first month’s interest or the balance grows forever.

Question 3

Does this include late fees?

Accepted Answer

No — assume on-time payments. Fees would increase the starting balance.

Debt Payoff Calculator

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