How to pay off debt faster
Two proven strategies decide the order you attack your debts. Both have you pay the minimum on everything, then throw every spare dollar at one target debt — the difference is which target you pick.
Debt avalanche — lowest total cost
The avalanche method targets your highest interest rate first. Because you kill the most expensive debt fastest, you pay the least interest overall and become debt-free soonest, mathematically. Choose this if you want to save the most money.
Debt snowball — fastest momentum
The snowball method targets your smallest balance first. You clear whole debts quickly, which feels great and keeps you motivated. It usually costs a little more interest than avalanche, but the psychological wins help many people stick with the plan.
Why the extra payment matters so much
Minimum payments are designed to keep you in debt for years — a large share goes to interest. Every extra dollar, by contrast, goes straight to principal. As each debt clears, its old minimum rolls into your extra payment, so your payoff accelerates month after month. Try raising the extra amount above and watch the debt-free date jump forward.
Worked example: three debts, $200 extra a month
The calculator opens with a realistic mix: a $6,000 credit card at 19.99% ($150 minimum), a $12,000 car loan at 6.5% ($280 minimum) and a $4,000 line of credit at 11% ($100 minimum). With $200 a month on top of the minimums:
- Avalanche attacks the credit card first, then the line of credit, then the car loan. Debt-free in 41 months with about $3,431 in total interest.
- Snowball clears the $4,000 line of credit first, then the card, then the car. Debt-free in 42 months with about $4,025 in interest.
Here the avalanche saves roughly $594 and one month. That gap is the price of the snowball's quicker first win. When your smallest debt is also your most expensive, the two methods give the same order and the same result.
How much the extra payment changes things
Same three debts, avalanche order, with different extra amounts. These figures come straight from this calculator:
| Extra per month | Debt-free in | Total interest |
|---|---|---|
| $0 (minimums only) | 67 months | $6,663 |
| $100 | 47 months | $4,321 |
| $200 | 41 months | $3,431 |
| $500 | 27 months | $2,180 |
The first $100 does the most work, saving over $2,300 in interest and 20 months. Each extra dollar after that still helps, but by less. If money is tight, a small, steady extra payment you can actually keep up beats a big one you abandon after three months.
The minimum-payment trap, in numbers
Take one $5,000 credit card at 20.99% with a fixed monthly payment and no new spending:
| Monthly payment | Time to pay off | Interest paid |
|---|---|---|
| $100 | 10 years | $6,973 |
| $150 | 4 years 3 months | $2,568 |
| $250 | 2 years 1 month | $1,207 |
At $100 a month you pay more in interest than you originally borrowed. Raising the payment by $50 cuts that by about $4,400. To check your own card, enter it as a single debt with its real payment and set the extra amount to $0.
Getting accurate results
- Use the rate you're actually charged. Cash advances and promotional balances often carry different rates on the same card. If they're large, enter them as separate debts.
- Enter the minimum you actually pay, not a percentage. The calculator treats each minimum as a fixed dollar amount. When a debt clears, its minimum rolls into your extra payment, which is how real payoff plans speed up.
- Stop adding new charges. Every projection here assumes the balances only go down. New spending on a card you're paying off resets the clock.
- Test a consolidation offer. Comparing a balance transfer or consolidation loan? Run your current debts, then run them again as one debt at the offered rate and payment. Remember to add any transfer fee to the balance.
Frequently asked questions
Snowball or avalanche — which should I use?
If you're driven by numbers, use avalanche — it always costs the least interest. If you need motivation to keep going, use snowball — clearing small debts early builds momentum. This calculator shows both so you can compare the real difference for your situation.
What counts as the APR?
Use the annual interest rate on each debt — the number on your credit-card or loan statement (for example, 19.99% for many credit cards). The calculator converts it to a monthly rate for you.
Is my information saved?
No. Everything runs in your browser and nothing you type is stored or sent anywhere.
Should I build an emergency fund before paying down debt?
Most people do best with a small cushion first, enough to cover a surprise bill without reaching for the credit card again. Then direct extra cash at high-interest debt. Paying off a 20% card is a guaranteed 20% return, which few savings options match.
Why does avalanche sometimes take the same time as snowball?
The order only differs when your smallest balance is not your highest rate. If those are the same debt, or if you are paying minimums only with nothing extra, both strategies produce the same payoff date and interest.