Debt payoff calculator
Estimate how long one debt may take to pay off, how much interest you may pay, and how extra payments could change the timeline. This is a planning estimate, not financial advice.
The one-time extra payment is treated as paid immediately, before monthly interest is estimated.
Optional. These fields only help show whether the payment may be heavy compared with income.
How to use the calculator
Use your current balance
Enter the amount owed now, not the original borrowed amount.
Use the stated annual rate
Enter the annual interest rate from your statement or account screen.
Test extra payments
Try different extra monthly payments to see how the timeline and estimated interest change.
Why extra payments matter
More of the payment reaches the balance
Interest is usually based on the remaining balance. Lowering the balance faster can reduce future interest.
Small repeat payments can compound
A small monthly extra payment may save more time than an occasional payment you forget to repeat.
One-time payments can help early
A one-time payment made now can reduce the balance before future monthly interest is estimated.
Check that rent, food, utilities, transport, health needs, and minimum payments are covered first.
Check whether the debt has prepayment fees, promotional-rate rules, hardship options, or required payment allocation rules.
Debt snowball vs debt avalanche
Debt snowball
Pay extra toward the smallest balance first while keeping minimum payments on the rest. It can create quick wins, but may not minimize interest.
Debt avalanche
Pay extra toward the highest interest rate first while keeping minimum payments on the rest. It often reduces interest more, but can feel slower at first.
When to seek professional debt help
Minimum payments are not reducing balances.
Debt payments make it hard to cover food, rent, utilities, transport, or health needs.
You are borrowing from one account to pay another.
You are missing payments, receiving collection notices, or feeling pressure to use high-cost borrowing.
You are unsure how a repayment plan, settlement, consolidation, bankruptcy, or insolvency option could affect you.
This calculator is for general planning. It is not financial, legal, tax, insolvency, or professional advice.
Rules, fees, interest calculation methods, hardship options, and debt-help systems vary by lender and country. Check local qualified help for serious debt problems.
How this estimate is calculated
The balance is reduced by any one-time extra payment first
If you enter a one-time extra payment, the calculator applies it to the starting balance before simulating future monthly payments.
Interest is estimated month by month
The annual percentage rate is converted to a monthly rate. Each month, estimated interest is added before the monthly payment reduces the balance.
Minimum-only and extra-payment plans are compared
The calculator runs the payoff once with the entered total payment and once with only the minimum payment so it can estimate time and interest differences.
Warnings appear when payoff math does not work
If a payment does not cover estimated interest, or the payoff would take too long to simulate, the result is marked as not available instead of pretending the debt is under control.
Inputs
- $5,000 balance at 19.9% APR
- $150 minimum monthly payment
- $75 extra monthly payment
- $500 one-time extra payment
Result and next decision
- The one-time payment lowers the starting balance before the monthly plan begins
- $225 monthly payments reduce the balance faster than the minimum-only plan
- The result estimates payoff time, payoff date, total interest, and interest saved
If the extra $75 makes the rest of the budget unsafe, test a smaller extra payment and use the budget calculator before locking in the plan.
Calculator FAQ
Why does the calculator say payoff is not available?
That can happen when the monthly payment is missing, too small to cover estimated interest, or the payoff would run beyond the simulation limit.
Should I enter minimum payment or total payment?
Enter the required minimum in the minimum field and any additional recurring amount in the extra payment field. The calculator adds them together.
Does this include fees or changing interest rates?
No. Late fees, annual fees, promotional rates, variable rates, balance transfers, and new charges can change the result.
Should I use snowball or avalanche?
Avalanche targets higher interest first. Snowball targets smaller balances first. The right method depends on interest cost, motivation, minimum payments, and budget safety.
Is this debt advice?
No. If debt payments are unaffordable, collections have started, or legal action is involved, consider qualified local debt help before making major decisions.
Debt payoff calculator results are planning estimates based only on the numbers you enter. They are not financial, legal, tax, credit, debt, or professional advice. Read how Earnio calculators work.
What to do next
Debt snowball vs avalanche
Compare the two common payoff methods before choosing where extra payments go.
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