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The average American household with revolving credit card debt carries about $7,000 of it. At a typical APR around 22%, paying only the minimum keeps you in debt for over twenty years, and you will pay more in interest than you originally borrowed. The math is brutal. The good news is that the math is also fixable, and the gap between "I should pay this off" and actually paying it off is mostly a tooling problem. WIMM Debt Reducer is that tool.
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Add your debts in 30 seconds each
Hit Add Debt in the top right. You pick a type from eight options: credit card, mortgage, auto loan, student loan, personal loan, medical, HELOC, or other. You enter the current balance, the APR (as a percentage, like 22.9), and the minimum payment. The name autocompletes against any bills you already have set up, so if a "Chase Sapphire" bill is in WIMM, the debt links to it on save.
The original balance field is optional. WIMM uses it to compute percent-paid-off achievements, but the rest of the calculations work fine without it.
Add three or four debts and the Overview page comes alive. You see your total balance, your weighted-average APR, the projected payoff date under the strategy you picked, and a hero countdown showing the months remaining.
The "Plan This Month" card tells you where to send the next dollar
The Your Plan This Month card on the Overview tab is the most useful screen in the whole feature. It picks the debt to attack this month based on your strategy. For avalanche, that is the highest-rate debt. For snowball, the smallest balance. WIMM shows you the focus debt, the exact total payment to send (minimum plus extra), the reason in plain English ("Highest rate at 22.9% APR"), and the projected payoff date if you stick with it.
Below that is a "Pay minimums on everything else" list with each remaining debt and its exact payment number. And at the bottom is the rollover hint: "Once Chase Sapphire is paid off, the $250/mo rolls into your next debt automatically." That is the snowball or avalanche effect made literal.

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What-If: model a bonus, a raise, or a tax refund
Switch to the Plan tab and open the Try a scenario drawer. There are two sliders.
The first models a one-time lump sum payment: $0 to $50,000, in $500 increments. Slide it to your expected tax refund, and the timeline updates instantly. Slide it to your bonus, and it shows the new payoff date and the interest saved.
The second models a recurring increase: $0 to $5,000 per month. Got a $4,000 a year raise? Slide it. Want to know what shaving $200 a month off dining out would do for your payoff date? Slide it. The chart updates as you drag, with no reload or recalculation lag.
There is also a "pay off by" target picker. Pick a month and year, and WIMM computes the exact extra monthly payment you would need to hit that date. That is the inverse of the question most debt tools answer, and it is the one most people actually ask.

Achievements that make the slog feel like a game
Paying off debt is a long, often boring journey. WIMM tracks 14 achievements that surface real progress moments. A few favorites:
- First Extra Payment. The day you pay above minimum for the first time.
- 3 Month Streak, 6 Month Streak, Year of Fire. Consecutive months of staying above minimum.
- $10K Paid, $25K Paid, $50K Paid, $100K Paid. Total principal eliminated.
- Halfway There. 50% of your starting debt is gone.
- Debt Free. The big one.
Achievements unlock automatically as you log payments and update balances. No badge-collecting busywork.
The Consolidation Modeler answers "should I take a balance transfer?"
The Plan tab also has a Consolidation Modeler. You enter a new rate (say, 8% on a personal loan, or 0% on a balance transfer card), a term in months, and a fee percent. WIMM runs the numbers and shows a "before and after" table: monthly payment, total interest, total paid, and payoff date, with green and red deltas on each line.
It also computes the break-even point in months. That is the moment at which the interest savings from the lower rate finally offset the balance transfer fee. If your math does not break even before you pay the consolidated balance off, the consolidation is not worth it, and WIMM tells you so up front.
What is free, and what Premium adds
The honest answer: everything this walkthrough covers is free for every WIMM user. Adding your debts, the Plan This Month card, the What-If sliders, the lump sum and "pay off by" date inputs, the 14 achievements, and the Consolidation Modeler with its break-even math all work at no cost on your real debts. The avalanche, snowball, and minimum-only math is the same math used by the best free spreadsheets on the internet. What WIMM adds is the UI that lets you stop maintaining spreadsheets.
Premium layers a few add-ons on top: AI strategy and negotiation advice, Plaid bank-sync of your debt balances, PDF statement upload, household debt sharing, and Save and Compare for saving named scenarios to revisit later. The core payoff engine stays free.
If you want to see it in action, the demo opens straight into the Debt Reducer with a sample household and four debts already loaded: app.wimm.money/demo?mode=debt.
Try WIMM today
The demo loads with realistic data and no signup. See what this article describes in action.