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Debt Payoff Calculator

Find out how long it takes to pay off your debt and how much interest you will pay.

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Estimate Only
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Results

Payoff Time
3 yr 5 mo
41 total months
Total Interest
$5,077.47
Total Payment
$20,077.47

Inputs

$
18.0%
035
$

Disclaimer: This calculator provides estimates for informational purposes only. Results are not financial advice. Consult a qualified financial advisor for decisions about your specific situation. Actual rates, terms, and conditions may vary by lender and individual circumstances.

How Does the Debt Payoff Calculator Work?

The debt payoff calculator models how long it takes to eliminate your debt and how much total interest you will pay. It can analyze a single debt or compare the two most popular multi-debt repayment strategies: the avalanche method, which targets the highest-interest debt first to minimize total interest paid, and the snowball method, which targets the smallest balance first to build psychological momentum through quick wins. Both methods require paying the minimum on all debts and directing any extra money toward one specific debt. When that debt is paid off, the freed-up payment rolls into the next target debt, creating an accelerating payoff effect.

How to Use This Calculator

Enter your total debt balance, the interest rate (APR), and your current minimum monthly payment. Optionally, add any extra monthly payment you can afford above the minimum. The calculator shows your payoff date, total interest paid, and how much time and money you save with extra payments. For multiple debts, enter each one separately to compare avalanche versus snowball strategies and see which saves more money and which eliminates debts faster.

Example Calculation

Rachel has a credit card with $8,500 balance at 19.9% APR, making $200 minimum payments. She wants to know when she will be debt-free and what happens if she pays $100 extra per month.

  1. 1Debt balance = $8,500 at 19.9% APR
  2. 2Minimum payment = $200/month
  3. 3Without extra payments: 62 months (5.2 years), total interest = $4,050
  4. 4With $100 extra payment ($300/month): 35 months (2.9 years), total interest = $2,052
  5. 5Time saved = 27 months (2.3 years)
  6. 6Interest saved = $4,050 - $2,052 = $1,998
Result: By paying an extra $100/month, Rachel pays off her debt 27 months sooner and saves $1,998 in interest. The extra $100/month costs her $3,500 total but saves nearly $2,000.

Understanding Your Results

The payoff date tells you when you will be completely debt-free. Total interest paid shows the true cost of your debt beyond the original balance. Compare the scenarios with and without extra payments — the time and interest savings are often dramatic. For the avalanche vs. snowball comparison, note that avalanche always saves more money in total interest, but snowball eliminates individual debts faster, which many people find motivating. Choose the method that you are most likely to stick with consistently.

Tips & Best Practices

  • ✓The avalanche method saves the most money, but the snowball method builds motivation with quick wins.
  • ✓Pay at least the minimum on all debts, then put extra toward your target debt.
  • ✓Consider balance transfer offers for high-interest credit card debt — 0% intro APR cards can save thousands.
  • ✓Track your progress — seeing debts disappear keeps you motivated throughout the payoff journey.
  • ✓Avoid taking on new debt while paying off existing balances. Cut up credit cards if needed.
  • ✓Every extra dollar you can put toward debt saves you interest. Even $25 extra per month makes a difference.

Frequently Asked Questions

Which is better: avalanche or snowball method?▾
Mathematically, the avalanche method (highest interest first) always saves the most money in total interest. However, research shows that the snowball method (smallest balance first) has higher completion rates because the quick wins of eliminating small debts keep people motivated. Choose avalanche if you are disciplined with numbers, or snowball if you need the psychological boost of quick victories. The best method is the one you actually follow through on.
Should I consolidate my debts?▾
Debt consolidation can help if you can get a lower interest rate than your current debts. It also simplifies payments into one monthly bill. However, avoid extending the term so much that you pay more total interest even at a lower rate. Most importantly, do not accumulate new debt on the accounts you just paid off — that is the biggest consolidation trap.
How much extra should I pay toward debt each month?▾
As much as you can comfortably afford without neglecting essential expenses and a basic emergency fund. Even $50 extra per month can save thousands in interest and years of payments. Review your budget for non-essential expenses you could temporarily redirect toward debt: subscriptions, dining out, entertainment. Once your debt is paid off, redirect the full payment amount toward savings and investing.
Should I save or pay off debt first?▾
Build a $1,000 emergency fund first, then focus on high-interest debt (anything above 7-8%). Once high-interest debt is eliminated, split extra money between building a full emergency fund and paying off lower-interest debt. The math usually favors paying off high-interest debt, but having zero savings leaves you vulnerable to emergencies that create more debt.
How do minimum payments keep me in debt?▾
Minimum payments are designed to primarily cover interest with only a small portion going to principal. On a $10,000 credit card at 20% APR, a typical 2% minimum payment ($200 initially) would take over 30 years to pay off and cost over $20,000 in interest — more than double the original balance. This is why paying above the minimum is crucial for getting out of debt in a reasonable timeframe.
By CalcMaven Editorial TeamLast Updated: February 2026

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Debt Payoff Calculator — Avalanche & Snowball Methods | CalcMaven