Debt Payoff Calculator
Add your debts, choose a payoff strategy, and see exactly when you'll be debt-free. Compare snowball vs avalanche to find what saves you the most.
Your debts
Revolving balance with variable APR
Vehicle financing with fixed term
Calculated payment: $355.72/mo
Government-backed education loan
Payoff strategy
Beyond your minimum payments ($736/mo total)
Results
4 yrs 8 mo
Extra payments save you
Strategy Comparison
How Your $936/mo Gets Allocated
Your total payment stays fixed. As each debt is paid off, its payment rolls into the next target.
→ $100.00/mo freed up and rolled into next target
→ $355.72/mo freed up and rolled into next target
Balance Over Time
Remaining Balances by Month
| Month | Credit Card | Car Loan | Student Loan | Total |
|---|---|---|---|---|
| 1 | $4,796 | $14,726 | $24,835 | $44,356 |
| 2 | $4,588 | $14,450 | $24,668 | $43,706 |
| 3 | $4,376 | $14,172 | $24,501 | $43,049 |
| 4 | $4,159 | $13,893 | $24,334 | $42,386 |
| 5 | $3,939 | $13,613 | $24,165 | $41,717 |
| 6 | $3,715 | $13,331 | $23,996 | $41,041 |
| 7 | $3,486 | $13,047 | $23,826 | $40,359 |
| 8 | $3,252 | $12,762 | $23,655 | $39,670 |
| 9 | $3,015 | $12,476 | $23,484 | $38,974 |
| 10 | $2,773 | $12,187 | $23,311 | $38,271 |
| 11 | $2,526 | $11,898 | $23,138 | $37,561 |
| 12 | $2,274 | $11,606 | $22,964 | $36,845 |
How This Debt Payoff Calculator Works
This calculator builds a complete payoff plan across all your debts simultaneously. Add each debt with its balance, interest rate, and minimum payment, choose a payoff strategy, and set an extra monthly payment amount. The calculator shows your exact debt-free date, total interest cost, and a month-by-month schedule showing how each balance drops to zero.
Unlike basic debt calculators, this one supports 12 different debt types with smart field handling for each. Mortgages auto-calculate your remaining balance from the original loan terms. Credit cards support both fixed-dollar and percentage-based minimum payments. HELOCs handle interest-only draw periods. Auto loans, student loans, and personal loans compute the monthly payment from your remaining term.
The fixed budget approach
This calculator uses a fixed monthly budget strategy. Your total payment stays the same every month — it's the sum of all your minimum payments plus any extra you choose to add. As each debt is paid off, its minimum payment gets rolled into the next target debt. This snowball of freed-up payments accelerates your payoff timeline dramatically as you eliminate each account.
Avalanche vs. snowball
The calculator compares both strategies side by side so you can see the difference in months and total interest. The avalanche method targets the highest interest rate first, which always saves the most money mathematically. The snowball method targets the smallest balance first, giving you quick wins that build momentum. Both use the same fixed monthly budget — only the order of attack changes.
Example scenarios
Credit card debt
$8K balance · 22.99% APR · $200/mo + $100 extra
~28 months
Saves ~$1,800 vs. minimum payments only
Mixed debt
$5K CC + $15K auto + $25K student · $200 extra
~44 months
Avalanche saves ~$1,200 more than snowball
Extra $50 impact
$10K credit card at 22% · just $50/mo extra
14 months faster
Saves ~$2,400 in interest over minimum payments
Frequently Asked Questions
Is the debt avalanche or snowball method better?
The avalanche method always saves more money because it eliminates the most expensive debt first. However, the snowball method gives you quicker psychological wins by clearing small balances fast. Research suggests people using the snowball method are more likely to stick with their plan and actually become debt-free. The best method is the one you'll follow consistently. This calculator shows both side by side so you can compare the exact dollar difference for your specific debts.
How much faster will extra payments pay off my debt?
The impact depends on your balances and interest rates, but even small amounts make a big difference. On a $10,000 credit card at 22% APR, adding just $50/month beyond the minimum can cut your payoff time by over a year and save thousands in interest. This calculator shows the exact time and money saved from your extra payments compared to minimums only.
What is the debt snowball rollover effect?
When you pay off a debt, its minimum payment doesn't disappear from your budget — it rolls into the next target debt. This creates an accelerating effect. If you start with $580/month across three debts and pay off the first one that had a $100 minimum, you now have $680/month hitting the second debt. When that one is gone, the full $680 attacks the last debt. This rollover applies to both the snowball and avalanche methods.
Should I pay off debt or invest?
A common rule of thumb: if your debt's interest rate is higher than the return you'd earn investing, pay off the debt first. Credit cards at 20%+ should almost always be prioritized over investing. A student loan at 4% is less clear cut since the stock market averages around 10% historically. However, the guaranteed return of eliminating debt is often worth more than the uncertain return of investing. Use the Compound Interest Calculator to compare what your extra payments could earn if invested instead.
How do I find extra money for debt payments?
Start by reviewing subscriptions and recurring charges you can pause or cancel. Selling unused items, picking up overtime or side work, and redirecting windfalls like tax refunds or bonuses toward debt all accelerate your payoff. Even redirecting $25–50 a week adds up to $100–200/month in extra payments, which can shave years off high-interest debt.
Should I consider a balance transfer?
A 0% APR balance transfer card can save significant interest if you can pay off the transferred balance before the promotional period ends (typically 12–21 months). Most cards charge a 3–5% transfer fee, so the math only works if the interest savings exceed the fee. Balance transfers work best for people with good credit who have a clear plan to pay off the balance within the intro period — otherwise, the post-promo rate (often 20%+) kicks in on any remaining balance.
What types of debt can I add to this calculator?
This calculator supports 12 debt types: credit cards, mortgages, auto loans, federal student loans, private student loans, personal loans, medical debt, HELOCs, 401(k) loans, buy now pay later accounts, IRS tax debt, and a custom category for anything else. Each type has smart fields — for example, mortgages auto-calculate your remaining balance from your original loan terms, and credit cards support percentage-based minimum payments.
Related tools: Compound Interest Calculator · Mortgage Calculator · Savings Goal Calculator · Tax Withholding Calculator