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Guide · Debt payoff
Debt payoff spreadsheet in Excel
A debt payoff spreadsheet in Excel turns vague extra payments into a month-by-month plan: which balance dies first, how many months remain, and roughly how much interest you avoid. You do not need macros — only balances, APRs, minimums, and an extra payment cell.
Inputs every payoff sheet needs
- Debt name, current balance, APR, and minimum payment
- One shared extra payment amount you can afford each month
- A method toggle or side-by-side: snowball (smallest balance) vs avalanche (highest APR)
- Month-by-month schedule or at least months-to-clear + interest totals
- Yellow inputs, gray formulas so you do not overwrite the math
Snowball vs avalanche (quick reminder)
| Snowball | Avalanche | |
|---|---|---|
| Order | Smallest balance first | Highest APR first |
| Psychology | Faster early wins | Usually less interest |
| What Excel should show | Months + interest for that order | Same metrics for APR order |
Many people model both in one file, then pick the plan they will actually stick with. Spreadsheets estimate; they are not advice from a counselor or lender.
Common mistakes
- Forgetting to roll the freed minimum into the next debt when one clears
- Typing payment totals by hand instead of letting formulas allocate extra
- Mixing credit cards and loans without clear APR fields
- Ignoring that APR changes or fees can invalidate the schedule
Educational only — not financial advice. Lender statements win over spreadsheet guesses.