Debt Payoff Calculator

When Will You Be Completely Debt-Free?

Carrying multiple debts — credit cards, student loans, car loans, personal loans — creates a fog of minimum payments, scattered due dates, and the sinking feeling that you’re treading water. Our debt payoff calculator cuts through the fog: enter all your debts, and it creates a precise payoff plan showing exactly when each debt will be eliminated and when you’ll be completely debt-free.

The calculator compares the two most popular payoff strategies — Avalanche (highest interest rate first) and Snowball (smallest balance first) — showing the payoff date, total interest paid, and monthly payment schedule for each approach. Enter your available monthly budget for debt payments and see how extra dollars above minimums accelerate your timeline.

The power of extra payments: If you have $500/month for debt payments and your minimums total $400, that extra $100/month directed strategically can cut years off your payoff timeline and save thousands in interest. Our calculator shows exactly how much each additional dollar saves.

Avalanche vs. Snowball: Which Strategy Wins?

The Debt Avalanche method directs all extra payments (everything above minimums on all debts) to the debt with the highest interest rate. After that debt is eliminated, its entire payment rolls to the debt with the next highest rate. This approach minimizes total interest paid and is mathematically optimal — you pay the least amount of money over the shortest period.

The Debt Snowball method directs extra payments to the debt with the smallest balance regardless of interest rate. After eliminating the smallest debt quickly, that payment rolls to the next smallest. This approach costs slightly more in total interest but provides psychological wins — eliminating a debt entirely feels rewarding and maintains motivation. Research by Harvard Business School found that people who use the snowball method are more likely to successfully eliminate all debts.

When Avalanche wins significantly: When your highest-rate debts also have large balances. A $15,000 credit card at 22% APR should be attacked first under Avalanche — the interest savings over Snowball can exceed $2,000–$5,000.

When Snowball wins psychologically: When you have several small debts that can be eliminated in 1–3 months. The rapid elimination of 2–3 debts creates momentum and confidence that sustains the longer payoff journey.

Our recommendation: Use Avalanche if you’re disciplined and motivated by math. Use Snowball if you need early wins to stay committed. Either method is infinitely better than paying minimums only.

How the Calculator Works

Enter each debt with its current balance, interest rate (APR), and minimum payment. Then enter your total monthly debt budget — the maximum you can allocate to all debt payments combined. The calculator:

1. Allocates minimum payments to all debts

2. Directs remaining budget to the priority debt (highest rate for Avalanche, smallest balance for Snowball)

3. When a debt is eliminated, rolls its payment to the next priority debt

4. Continues until all debts reach zero

5. Shows month-by-month payoff schedule, total interest per debt, and debt-free date

The “debt-free date” is the moment when the last debt hits zero — the number you should circle on your calendar and count down to.

Common Debt Types and Average Rates (2026)

Credit cards: Average APR 22.76%. Range: 16–29%+. Always the highest-priority debt in an Avalanche strategy. Carrying credit card debt while making only minimum payments is the single most expensive financial mistake most Americans make.

Student loans (federal): Direct Subsidized/Unsubsidized: 5.5–7.05%. PLUS loans: 8.05%. Federal loans offer income-driven repayment plans, forgiveness programs (PSLF), and deferment options not available with private loans.

Student loans (private): 4–14% depending on credit and lender. No federal protections — fixed terms, no forgiveness, limited hardship options.

Auto loans: 5.5–8.5% (good credit new car) to 10–20% (poor credit used car). Secured by the vehicle, so rates are lower than unsecured debt.

Personal loans: 6–36% depending on credit. Unsecured, used for consolidation, medical expenses, or large purchases.

Medical debt: Often 0% if negotiated with the provider (many hospitals offer interest-free payment plans). If sent to collections or financed through a medical credit card: 0–26.99%.