Should you attack the debt with the highest rate or the one with the smallest balance? That choice changes how long you stay in debt and how much interest you hand to lenders. A clear plan beats guessing, especially with three or more accounts.
This debt payoff calculator lists all your balances and builds a month-by-month plan. It compares the avalanche, snowball, and custom order methods side by side. It is built for anyone juggling credit cards, car loans, student loans, or personal loans.
Table of Contents
- Key Features of the Payoff Planner
- How to Build Your Plan Step by Step
- How the Calculator Runs Each Month
- Worked Example: Three Debts and $300 Extra
- Reading the Results and Timeline
- Avalanche vs Snowball vs Custom Order
- Limitations and Assumptions
- FAQs About the Debt Payoff Calculator
Key Features of the Payoff Planner
- Multiple debts: add as many accounts as you need, each with a balance, APR, minimum, and priority.
- Three strategies: Avalanche, Snowball, and Custom order tabs, plus a table comparing all three.
- Summary cards: total debt, debt-free date, interest payable, and interest saved.
- Payoff overview: monthly budget, payoff duration, total repayment, minimum-only duration, months accelerated, and highest APR account.
- Balance chart and timeline: a remaining-debt line plus a monthly table. Show 12, 24, 60, or all months.
- Smart insights: short notes on your extra payment, lowest-cost strategy, and costliest balance.
- Utility actions: copy a summary, export CSV or JSON, print, reset, and save up to six scenarios in your browser.
How to Build Your Plan Step by Step
- Pick a Currency. USD is the default, and eight others are available.
- Choose a Start month. The first payment lands in this month.
- Enter your Extra monthly payment, the money you can add on top of all minimums.
- Set Amount precision to whole amounts or two decimals.
- Under Debt accounts, fill in each Account name, Balance, APR %, and Min payment.
- Give each debt a Priority number, starting at 1. Only the custom order uses it.
- Press Add debt for more rows or Remove to delete one.
- Click a strategy tab. The plan updates with every change you make.
The tool opens with three sample debts totaling $29,500 and a $250 extra payment. Replace them with figures from your latest statements.
How the Calculator Runs Each Month
Your monthly debt budget stays fixed for the whole plan. It equals the sum of all minimums plus your extra payment.
Sum of Minimums+Extra Payment=Monthly Debt Budget
Each month then follows the same three steps.
- Interest is added to every open balance. Monthly interest = balance × APR ÷ 12.
- Every debt gets its minimum payment, or its full balance if that is smaller.
- All leftover budget goes to the target debt chosen by your strategy.
When a debt reaches zero, its old minimum stays in the budget. That money rolls to the next target automatically. Balances round to the cent each step, and the loop stops once every balance is paid.
Worked Example: Three Debts and $300 Extra
Rosa in Texas owes three debts and starts her plan in November 2026. She can add $300 a month on top of her minimums.
| Debt | Balance | APR | Minimum |
|---|
| Visa card | $7,800 | 22.9% | $230 |
| Personal loan | $2,400 | 11.5% | $110 |
| Car loan | $12,600 | 6.9% | $310 |
Her total debt is $22,800, and her monthly budget is $950. In the first month, interest adds $244.30, and the remaining debt falls to $22,094.30. So $705.70 of her $950 payment reduces principal.
| Strategy | Debt Free | Months | Interest | Total Paid |
|---|
| Avalanche | Feb 2029 | 28 | $3,067 | $25,867 |
| Snowball | Feb 2029 | 28 | $3,316 | $26,116 |
| Custom (car loan first) | Mar 2029 | 29 | $4,458 | $27,258 |
With avalanche selected, the tool shows $3,907 in interest saved and 28 months accelerated. Paying only the minimums would take 56 months and cost $6,974 in interest.
Reading the Results and Timeline
- Debt-free date: the month of your final payment. It reads Review plan if payments cannot cover interest.
- Interest payable: total interest under the strategy you selected.
- Interest saved and months accelerated: your plan compared with paying only each minimum, with no extra and no rollover.
- Total repayment: every dollar paid, so principal plus interest.
- Principal share: original debt divided by total repayment. Rosa's avalanche plan scores 88.1%.
- Target account: the debt getting the leftover budget that month. Watch it switch as each account closes.
A Not feasible label means your budget does not beat the monthly interest. Raise the extra payment until a date appears.
Avalanche vs Snowball vs Custom Order
Avalanche targets the highest APR first, with ties going to the smaller balance. It usually costs the least, as Rosa's $249 savings over snowball shows.
Snowball targets the smallest balance first, with ties going to the higher rate. Rosa's personal loan disappears in month 7 instead of month 19. That quick win keeps many people motivated.
Custom order follows your priority numbers. Use it to clear a loan with a cosigner or a card you plan to close.
The extra amount matters more than the method here. Raising Rosa's extra to $500 cuts the avalanche plan to 22 months.
For a single card, the credit card payoff calculator is simpler. Weighing a consolidation offer? Price it with the personal loan payment calculator, then enter it here as one debt.
To find your extra payment, start with a monthly budget planner. Keep a small cushion too, and size it with the emergency fund calculator.
Limitations and Assumptions
- APRs and minimums stay fixed. Real card minimums often shrink as balances fall.
- Interest is compounded monthly at APR ÷ 12. Card issuers that charge daily interest will differ slightly.
- Fees, promo rates, and new charges are not modeled.
- If a minimum does not cover its monthly interest, an insight flags that account. If minimums alone never clear the debt, interest saved shows a dash.
- Every debt needs a name, a positive balance, and a priority of 1 or more, or no plan appears.
- Saved scenarios live only in this browser and clear with your site data.
FAQs About the Debt Payoff Calculator
Is the Avalanche or Snowball Method Better?
Avalanche costs less interest in most cases. Snowball gives faster early wins, which helps people who struggle to stay on track.
What Does Rolling Over a Payment Mean?
When one debt is paid off, its minimum is not removed from your budget. That money moves to the next target debt.
Can I Add a Mortgage or Student Loan?
Yes. Any fixed-rate debt with a balance, APR, and minimum payment works. Long loans simply stretch the timeline.
Why Does It Say Payment Too Low?
Your monthly payment is not larger than the interest charged. Raise the extra payment or check your minimums.
Can I Export My Payoff Schedule?
Yes. Export CSV saves the full monthly timeline, and Export JSON saves your inputs, results, and comparisons.
Does Paying Off Cards Help My Credit Score?
Lower card balances reduce your utilization ratio, which often helps. Track it with the credit utilization calculator.
Find more loan, savings, and budgeting calculators in the AskWebTools finance hub.
This calculator gives planning estimates only and is not financial advice. Reviewed for general accuracy by Prof. Dr. Khalil Mudassar, PhD.