Debt Payoff Calculator
Compare snowball (smallest balance first) vs avalanche (highest interest first). Enter up to 3 debts.
Use the calculator above to model how long it will take to become debt-free. Enter up to three debts with their current balance, annual interest rate (APR), and minimum monthly payment. Add any extra amount you can pay beyond minimums each month, then choose snowball (smallest balance first) or avalanche (highest interest first). The tool estimates total months to payoff, approximate total interest paid, and the order debts clear.
Why use a debt payoff calculator?
Paying only minimums on credit cards and personal loans keeps you in debt for years. Interest compounds against you every month—directly opposing the compound growth you want on investments. A payoff calculator shows what changes when you direct even ₹2,000–₹5,000 extra to one target debt using a clear strategy.
Without a plan, “something extra whenever possible” rarely sticks. A calculator turns vague intent into a timeline you can track month by month.
How this calculator works
Each month the simulation:
- Adds monthly interest to each open balance (balance × APR ÷ 12).
- Deducts each debt’s minimum payment from its balance.
- Applies your extra payment to one priority debt (snowball or avalanche order).
- Repeats until all balances reach zero or a safety cap of 600 months.
Snowball method: after minimums, extra money goes to the debt with the smallest balance. Quick wins build motivation; you may pay slightly more interest overall.
Avalanche method: extra money goes to the debt with the highest APR. Mathematically cheapest path; progress can feel slower early on.
Snowball vs avalanche — which to choose?
| Method | Best for | Trade-off |
|---|---|---|
| Snowball | Need motivation; many small balances | May cost more interest |
| Avalanche | High-rate credit card debt; disciplined budgeters | Slower visible “wins” early |
Run both scenarios in the calculator with your real numbers—the rupee difference often surprises people. Read our full comparison in debt snowball vs avalanche.
Worked example (India)
Suppose you have:
- Credit card: ₹80,000 at 36% APR, ₹4,000 minimum
- Personal loan: ₹1,50,000 at 14% APR, ₹6,000 minimum
- Extra payment available: ₹3,000/month beyond all minimums
Under avalanche, extra goes to the 36% card first—usually saving thousands in interest vs snowball. Under snowball, extra clears the ₹80,000 card first for a psychological boost, then rolls to the loan. Enter these figures above to see your exact timeline and interest totals.
Step-by-step debt payoff plan
- List every debt: balance, APR, minimum payment, due date.
- Pay minimums on all debts every month—never skip to chase one target.
- Choose snowball or avalanche; direct all extra cash to the priority debt.
- When one debt clears, roll its entire payment (minimum + extra) to the next target.
- Recalculate when rates change, you get a bonus, or you add new debt.
Tips to pay off debt faster
- Convert credit card debt to a lower-rate personal loan only if you stop new card spending.
- Use windfalls (bonus, tax refund, sale of unused items) as one-time extra principal payments.
- Automate minimums; manually transfer the “extra” amount on payday so it is not absorbed by lifestyle creep.
- Build a small ₹10,000–₹25,000 buffer so unexpected expenses do not go back on the card.
Frequently asked questions
Should I invest or pay debt first?
High-interest debt (credit cards above ~18% APR) usually beats expected investment returns after tax. Low-rate home loans are different—many continue SIPs while paying EMI normally. Model your situation rather than following generic rules.
Does this calculator include prepayment penalties?
No. Some personal loans charge prepayment fees—check your loan agreement and subtract any penalty from the benefit of early payoff.
What about BNPL and informal loans?
Include any balance with a defined payment and cost. Zero-interest BNPL still counts if missing a payment triggers fees or high back-interest.
Related reading
- Debt snowball vs avalanche method — detailed strategy guide with Indian examples
- Emergency fund calculator — avoid new debt when surprises hit
- Power of compound interest — what you gain once debt stops working against you
Disclaimer: Estimates assume fixed APR and consistent extra payments. Actual lender rounding, fees, and rate changes may differ. Educational content only—not debt or legal advice.
