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Debt Payoff Calculator

Compare debt snowball and debt avalanche across multiple debts in one calm payoff dashboard. Estimate your debt-free date, total interest, payoff order, and how extra monthly payments could shorten the path.

Editor

Debt payoff assumptions

Add multiple debts, choose snowball or avalanche, and compare how your extra monthly payment changes the debt-free date, interest cost, and payoff order.

Debt setup

Each debt keeps its minimum payment. The selected strategy only changes which balance receives the extra amount and the rolled-over payments next.

Debt list

Start with the balances, APRs, and minimum monthly payments you are working with today. At least one row always stays visible.

The default example starts with 4 debts so the payoff order, comparison, and chart are useful right away.

Credit Card A

Balance $4,800 | APR 27.49% | Minimum $145/mo

Credit Card B

Balance $2,250 | APR 17.9% | Minimum $65/mo

Auto Loan

Balance $12,400 | APR 6.1% | Minimum $305/mo

Personal Loan

Balance $6,100 | APR 12.8% | Minimum $180/mo

At least one debt row stays visible so the scenario never drops into an empty editor state.

Strategy and extra payment

The strategy decides which debt receives the extra money first. Every other active debt still keeps receiving its minimum payment.

Once a debt is paid off, its old payment amount rolls into the next target automatically. That keeps the total payoff budget moving forward instead of shrinking over time.

Advanced options

Optional timeline settings that keep the payoff date aligned with your calendar.

Start date stays on by default so the results can show calendar dates right away.

Results

Estimated debt payoff

See the debt-free date first, then compare total interest, payoff order, and how snowball and avalanche differ under the same debts and extra payment.

Estimated debt-free dateDebt Snowball

May 5, 2029

Based on $845.00 per month across 4 active debts. The strategy changes the payoff order, not the total payment budget.
Payoff time
3 years 1 month
Estimated from the current debts, minimums, and extra payment.
Total interest paid
$4,983.36
Estimated interest cost across the full payoff path.

Total starting debt

$25,550.00

Balances currently included in the payoff plan.

Monthly minimum payments

$695.00

Combined required payments before the extra amount.

Extra monthly payment

$150.00

Added to the current target debt each month.

Initial total monthly payment

$845.00

Month-one payment budget across all active debts.

Total paid overall

$30,533.36

Principal plus estimated interest under the plan.

Number of debts

4

Only debts with a positive balance are simulated.

Strategy selected

Debt Snowball

Snowball and avalanche stay visible side by side below.

Snowball vs avalanche

Both strategies are calculated from the same debts and extra payment, so the comparison stays apples-to-apples.

Debt Snowball

Selected
Debt-free date
May 5, 2029
Payoff time
3 years 1 month
Total interest
$4,983.36

Debt Avalanche

Debt-free date
Apr 5, 2029
Payoff time
3 years
Total interest
$4,656.88
InterestDebt Avalanche saves $326.48
TimelineDebt Avalanche finishes 1 month sooner
First payoffSnowball clears the first balance sooner

Remaining debt balance over time

The dark line shows the debt snowball path. The dashed line shows the debt avalanche comparison.
Debt Snowball
Debt Avalanche
$25.6K$12.8K$0
Apr 5, 2026Nov 5, 2027May 5, 2029

Debt payoff milestones

Review the payoff order for the debt snowball plan, including the month and date each balance is estimated to be cleared.
DebtPayoff orderPayoff monthPayoff dateInterest paid
Credit Card B112Apr 5, 2027$214.95
Credit Card A226Jun 5, 2028$2,008.39
Personal Loan331Nov 5, 2028$1,340.03
Auto Loan437May 5, 2029$1,419.99

Monthly payoff schedule

The month-by-month view stays collapsed by default so the results dashboard remains easy to scan first.
37 monthly rows are ready when you want the full payoff detail.

How it works

How this debt payoff calculator works

This calculator estimates how multiple debts could be paid down over time by applying every debt's minimum payment first, then sending the extra money and any rolled-over freed payments to the current target debt.

How the payoff math works

The calculator runs month by month. It estimates monthly interest from each debt's APR, applies the minimum payment to every active debt, then directs the extra monthly amount to the current target debt. If a debt is finished early in that month, any unused dollars continue to the next target instead of getting lost.

Debt snowball vs debt avalanche

Debt snowball targets the smallest balance first, which can create earlier visible wins. Debt avalanche targets the highest APR first, which often saves more interest. Both use the same total payment budget here, so the comparison focuses on order rather than payment size.

FAQ

What is the debt snowball method?

The debt snowball method focuses on the smallest balance first while keeping minimum payments on the rest. Once that first balance is paid off, its payment rolls into the next debt.

What is the debt avalanche method?

The debt avalanche method focuses on the highest-interest debt first. It can take longer to get the first quick win, but it often lowers the total interest paid.

Which debt payoff strategy saves the most interest?

Under fixed-rate assumptions, debt avalanche often saves more interest because it attacks the highest APR sooner. Still, the best strategy is the one you can stick with consistently.

How much faster can extra payments help pay off debt?

Extra payments reduce principal earlier, which means less future interest accrues. Even modest extra monthly amounts can shorten the timeline by months or years depending on the balances and APRs.

Estimate disclaimer

These results are planning estimates. Real lenders may use daily interest calculations, variable rates, fees, changing minimum-payment rules, or statement timing that produces different outcomes.

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