Last updated: March 2026
What is a Debt Payoff Calculator?
A debt payoff calculator helps you create a plan to eliminate your debts by comparing different repayment strategies. Enter all your debts including credit cards, student loans, car loans, and personal loans, and the calculator shows when you will be debt-free, how much interest you will pay, and the optimal order to pay off each debt. Our calculator compares the two most popular strategies side by side so you can choose the approach that works best for you.
Total U.S. household debt reached $17.94 trillion in 2025, with credit card debt alone exceeding $1.2 trillion. The average credit card interest rate is 22.76% APR.
How to Use This Calculator
Step 1: Enter each debt with its name, current balance, interest rate (APR), and minimum monthly payment.
Step 2: Set your extra monthly payment using the slider — any amount above your minimums that you can contribute.
Step 3: Compare the Snowball and Avalanche results side by side to see which saves more money and time.
Step 4: Expand the month-by-month schedule to see exactly what to pay each month, and download the CSV to track your progress.
Key Features
Side-by-side strategy comparison. See Snowball and Avalanche results simultaneously. Compare debt-free dates, total interest paid, and payoff order for both methods to make an informed choice.
Extra payment impact slider. Drag the slider from $0 to $1,000 to see how additional monthly payments affect your payoff timeline. Watch your debt-free date and interest savings update in real-time.
Visual payoff timeline. An SVG chart shows your remaining balance decreasing over time for both strategies, making it easy to visualize the journey to becoming debt-free.
Month-by-month payment schedule with CSV export. Expand the detailed schedule to see exactly what to pay each month. Download the data as a CSV file to import into a spreadsheet and track your real-world progress.
Debt Snowball vs Debt Avalanche: Which Strategy is Best?
The snowball method targets the smallest balances first, giving you quick psychological wins that build momentum. Research by the Harvard Business Review found that people who focus on small debts first are more likely to eliminate all their debt, because the sense of progress keeps them committed to the plan.
The avalanche method targets the highest interest rates first, which is mathematically optimal. You will always pay less total interest with the avalanche method. The savings can be significant when you have a mix of high-rate credit cards and lower-rate installment loans.
The best strategy is the one you will actually follow. If motivation is your challenge, choose the snowball. If you are disciplined and want to minimize costs, choose the avalanche. Either way, making extra payments is the most important factor in getting out of debt quickly.
Frequently Asked Questions
What is the debt snowball method?
The debt snowball method pays off debts from smallest balance to largest, regardless of interest rate. You make minimum payments on all debts and put any extra money toward the smallest balance. When that's paid off, you roll its payment into the next smallest. The psychological wins of eliminating debts quickly keep you motivated.
What is the debt avalanche method?
The debt avalanche method pays off debts from highest interest rate to lowest. You make minimum payments on all debts and put extra money toward the highest-rate debt first. This method saves the most money in total interest paid, though it may take longer to see your first debt eliminated.
Which method saves more money?
The avalanche method always saves more money (or the same) in total interest compared to the snowball method. The difference can range from negligible to thousands of dollars depending on your interest rates and balances. Our calculator shows the exact savings side by side.
How much extra should I pay toward debt?
Any extra amount helps. Even $50-100 per month above your minimums can save thousands in interest and shave years off your payoff timeline. Use the slider in our calculator to see the exact impact of different extra payment amounts on your debt-free date.
Does paying extra actually help that much?
Yes, dramatically. On a $5,200 credit card at 22.99% APR with $130 minimum payments, paying just the minimum takes over 5 years and costs $3,600+ in interest. Adding $100/month extra cuts it to under 2 years and saves over $2,500 in interest. The higher the interest rate, the bigger the impact.
How long will it take to pay off my debt?
It depends on your total balance, interest rates, minimum payments, and how much extra you can pay. Enter your debts into the calculator above to see your exact payoff timeline for both snowball and avalanche methods, including a month-by-month schedule.