Debt Payoff Calculator

Two payoff strategies run against a real month-by-month amortisation schedule, so you can see what each one costs before you choose.

List every debt with its balance, APR and minimum payment. Anything the sheet highlights has a minimum that never clears the balance, which means the payment is not covering the interest. Set a target date and it back-computes the monthly payment that would clear everything by then. Put your realistic extra payment on the two method tabs and read the difference.

WHAT'S INSIDE

Dashboard - what you owe, months to freedom, and what each route costs

Start Here - how the file works and which cells are yours

Debts - every balance, APR and minimum, and the payoff-date solver

Snowball - smallest balance first, with your extra cascading

Avalanche - highest rate first, with your extra cascading

Comparison - the two routes side by side, in months and in interest

THE PART NOBODY ELSE BUILDS

Most calculators total your debts and multiply. This one amortises month by month, which is the only way the cascade shows up. Both methods send the same amount out each month; what differs is the order debts clear in, and every time one clears, its freed minimum lands on the next debt down. That cascade is the whole reason the two routes finish on different dates and cost different amounts, and it is why a comparison built on averages gets the answer wrong.

WHAT YOU GET

Excel workbook (.xlsx)

Google Sheets template - one click to copy

Setup instructions (PDF)

Free updates for life

BEFORE YOU BUY

Works in Microsoft Excel 2016 and later, and in Google Sheets. No app, no subscription, no account. The numbers are whatever your own debts produce; the file promises no particular saving. Amounts in USD. Digital download, all sales final.