Debt Payoff Calculator and Planner
Debt Payoff Calculator
Your Debts
Extra Payments
Payment Strategy
After a debt is paid off, that payment amount will be redirected to remaining debts (Debt Avalanche strategy)
After a debt is paid off, the total monthly payment decreases
The debt payoff calculator shows how long it takes to become debt-free and the total interest you will pay based on your monthly payment. Compare the avalanche and snowball strategies to find the fastest and cheapest path out of debt.
Avalanche vs. Snowball Method
| Method | Strategy | Best For | Total Interest |
|---|---|---|---|
| Avalanche | Pay highest APR debt first | Minimizing total cost | Lowest |
| Snowball | Pay smallest balance first | Quick wins and motivation | Slightly higher |
| Consolidated | Combine into one lower-rate loan | Simplifying payments | Depends on new rate |
How Much Extra Payment Saves
On $20,000 of combined debt at an average 18% APR with minimum payments of $400/month, payoff takes 7+ years and costs $14,000+ in interest. Adding $200/month extra cuts this to 4 years and saves about $7,000 in interest. Even $50 extra per month makes a significant difference on high-rate debt.
Interest Saved = Total interest (minimum payments) - Total interest (extra payments)
Enter each debt separately in the calculator to see the full payoff schedule.
Debt-to-Income Ratio and Why It Matters
Lenders use your debt-to-income (DTI) ratio to assess your ability to handle new credit. DTI = monthly debt payments / gross monthly income. A DTI below 36% is considered healthy. Above 43% makes mortgage approval difficult. Paying down existing debt improves your DTI and your borrowing options.
DTI = Monthly Debt Payments / Gross Monthly Income x 100
Example: $1,800 monthly debt payments on $5,000 gross income = 36% DTI.
Frequently Asked Questions
What is the fastest way to pay off debt?⌄
Use the avalanche method: make minimum payments on all debts, then put every extra dollar toward the highest-interest debt. Once paid off, roll that payment to the next highest. This minimizes total interest and therefore pays off debt the fastest. The snowball method (smallest balance first) takes slightly longer but provides motivation through early wins.
Should I pay off debt or save money?⌄
First, build a small emergency fund (1 month expenses) to avoid borrowing again when unexpected costs arise. Then pay off debt above 7-8% interest before investing, since that rate is difficult to beat consistently with investments. Below that rate, consider investing in a 401(k) with employer match first, then split between paying debt and investing.
What is debt consolidation?⌄
Debt consolidation combines multiple debts into a single loan, ideally at a lower interest rate. This simplifies payments and can reduce total interest. Common methods: personal loan, balance transfer card, or home equity loan. The risk is using your home as collateral for unsecured debt, or extending the term in ways that increase total interest.
How do I calculate my total debt payoff time?⌄
For each debt: divide the balance by the monthly payment, adjust for interest, and project the payoff date. This calculator does the work automatically — enter your balance, rate, and monthly payment for each debt to see the payoff schedule and total interest.
How much extra should I pay on debt each month?⌄
Any extra amount helps. Even $50/month extra on a $10,000 debt at 15% APR saves about $1,500 in interest and shortens payoff by over a year. Focus extra payments on the highest-rate debt for maximum impact. Automate the extra payment so it happens consistently.