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Debt Payoff Calculator

Find out exactly when you'll be debt-free and how much interest you'll pay. Adjust your monthly payment to see the impact instantly.

Debt Details

$
%
$

Suggested minimum: $200/mo

Payoff Estimate

Time to Debt Freedom

4y 2m

$300/month · 19.99% APR

Original Balance$10,000
Total Interest Paid$4,714
Total Amount Paid$14,714

vs. Minimum Payment Only

Time saved4y 11m faster
Interest saved$6,947
● Principal 68%● Interest 32%

Estimate assumes a fixed monthly payment and constant APR. Actual payoff may vary if additional fees apply or the interest rate changes.

How the Debt Payoff Calculator Works

Each month, interest accrues on your remaining balance. Your payment covers that interest first, then the remainder reduces the principal. The more you pay each month, the faster the principal falls — which means less interest accrues in subsequent months.

n = –log(1 – r × B / P) / log(1 + r)

Where B = current balance, r = monthly interest rate (APR ÷ 12), and P = monthly payment. Even small increases in your monthly payment can cut years off your timeline because each extra dollar goes directly to reducing the interest-bearing principal.

Best Strategies to Pay Off Debt Faster

Debt Avalanche (saves the most money): Make minimum payments on all debts. Direct every extra dollar to the highest-interest debt first. When it's gone, roll that payment to the next-highest rate. This minimizes total interest paid across all debts.

Debt Snowball (most motivating): Pay off the smallest balance first. Each payoff creates a psychological win that builds momentum. Research shows it keeps people on track better than the avalanche method, even if it costs slightly more in interest.

Balance transfer to 0% APR: Many credit cards offer 0%–intro APR on balance transfers for 12–21 months. A 3%–5% transfer fee is often worth it if you can pay down the balance within the intro period. Compare total cost before transferring.

Refinance or consolidate: A personal loan at 8%–12% APR to pay off 20%+ credit card debt can cut your interest cost dramatically. Use this calculator to model the difference between your current APR and a potential refinance rate.

Debt Payoff Calculator — FAQ

What is the debt avalanche method?
The debt avalanche method prioritizes paying off the debt with the highest interest rate first while making minimum payments on all others. Once the highest-rate debt is paid off, you roll that payment to the next-highest. This is mathematically optimal and saves the most money in total interest over time.
What is the debt snowball method?
The debt snowball method pays off the smallest balance first, regardless of interest rate. Each payoff creates a psychological win and motivational momentum. While it costs more in interest than the avalanche method, research shows it helps people stay consistent — which makes it effective for many borrowers.
How much extra should I pay to get out of debt faster?
Even an extra $50–$100 per month can save years on your repayment. Every additional dollar goes directly to principal, which reduces the balance on which interest accrues. Use this calculator to compare scenarios: try increasing your monthly payment by $25, $50, or $100 to see the time and interest savings.
Should I pay off debt or invest?
The general rule: pay off debt whose interest rate exceeds expected investment returns (typically anything above 6%–7%). High-interest debt like credit cards (18%–25% APR) should almost always be paid off before investing outside of a 401(k) employer match. Low-interest debt (like 3% mortgages) may be worth carrying while investing.
Does paying off a loan early have any penalty?
Some personal loans and auto loans include a prepayment penalty — a fee charged if you pay off the loan early. Read your loan agreement carefully. Most credit cards and student loans do not have prepayment penalties. If your loan has no prepayment penalty, paying extra always saves you money.