Debt payoff planner in Excel: see your debt-free date

A debt payoff planner in Excel lists every debt with its balance, interest rate and minimum payment, then applies one extra payment in a set order until each balance hits zero. The useful output is a month-by-month schedule and a single date: the month you're debt-free.

Here's how it works, a worked example with real numbers, and the planner we make.

What a debt payoff spreadsheet needs

From those inputs, the spreadsheet should calculate monthly interest, roll each paid-off minimum into the next debt, and show the payoff month for every debt plus the interest you save compared with paying minimums only.

A worked example

Four debts and $200 a month extra on top of the minimums:

Snowball (smallest balance first) pays off the store card first, then the personal loan, then the credit card, then the car. You get a win within a few months, and each payoff frees up money for the next.

Avalanche (highest rate first) attacks the store card and credit card first because of their rates, and usually costs less interest overall.

In examples like this, the difference in total interest between the two methods is often smaller than people expect, while the extra $200 a month makes a large difference compared with minimums only. Picking a method you'll stick with matters more than picking the mathematically perfect one. A planner lets you switch between them and compare the debt-free date and interest instantly.

The planner we make

Our Debt Payoff Planner ($6.99) works in Excel and Google Sheets. It holds up to 10 debts, has a snowball or avalanche switch, rolls each extra payment forward automatically, and builds a month-by-month payoff schedule up to 30 years. You see the payoff month for every debt, your debt-free date, and the interest saved compared with minimums. A Start Here PDF explains setup.

It's also part of the Ultimate Budget Bundle ($19.99), which includes all six of our budget spreadsheets plus two printable planners. If you'd rather track by hand, the Monthly Budget Planner paperback has debt payoff pages next to the monthly budget.

How to use it in your first week

1. Gather statements for every debt and note balance, APR and minimum payment.
2. Find your extra payment. Even $50 a month changes the schedule; a zero-based budget is the easiest way to find it.
3. Enter everything and pick a method. Look at both results before deciding.
4. Set up autopay for minimums on every debt so nothing is ever late.
5. Pay the extra amount manually to the target debt each month, right after payday.
6. Update balances monthly. Seeing the debt-free date move closer is real motivation.

Snowball or avalanche: how to choose

• Choose snowball if you've started and stopped before, or if you have several small balances. Quick wins keep you going.
• Choose avalanche if you're motivated by numbers and one or two debts carry much higher rates than the rest.
• Consider a hybrid: knock out one tiny balance first for momentum, then switch to avalanche.

For a deeper comparison, read our guide on debt snowball vs. avalanche.

Mistakes that slow payoff down

• Adding new debt while paying off old debt. Pause the cards you're paying down.
• No emergency buffer. A small starter fund keeps a car repair from going back on a card.
• Forgetting rate changes on variable-rate debts. Update the APR when a statement shows a change.
• Letting freed-up minimums disappear into everyday spending. They must roll to the next debt.

This planner organizes your own numbers; it isn't financial advice. For debt relief, consolidation or bankruptcy questions, talk to a nonprofit credit counselor or qualified professional.

Need a reminder while you work? Our "Debt Snowball in Progress" design is a cheerful progress bar on a tee or mug.