Finance tool
Debt payoff calculator
Compare snowball and avalanche side by side — see how many months and how much interest each strategy saves on your actual debts.
Start with the free manual tool. If you want the real document view after that, analyze a statement PDF.
Free tool
Snowball vs avalanche — run both at once
Enter each debt's balance, APR, and minimum payment, plus any extra you can send every month. The calculator runs both strategies in parallel and shows exactly how much time and interest avalanche saves over snowball (or vice versa) for your specific situation.
Debt inputs
Add each debt's balance, APR, and minimum payment. The calculator runs both snowball (smallest balance first) and avalanche (highest APR first) strategies in parallel.
Any amount above the sum of minimums — the strategy applies this to the priority debt each month.
Across 4 active debts.
+ $200 extra → $850/mo.
First paid off: Credit card. Pays less interest overall. Mathematically optimal.
First paid off: Personal loan. Faster psychological wins. Popular Dave Ramsey strategy.
Time saved: 1 mo sooner with avalanche.
Interest saved: $697 less with avalanche.
Natural next step
Need the numbers from your statements?
The hardest part of debt payoff planning is pulling accurate balances, APRs, and minimums from multiple statements. Upload your bank statement PDF and get every transaction and recurring payment in one view — ready to drop into the calculator.
What it gives you
Fast enough for a first pass
Each tool is intentionally narrow. The job here is a clean estimate, not a fake replacement for a full statement analysis.
Side-by-side comparison
Runs both snowball and avalanche strategies simultaneously so you can compare time and interest directly.
Multi-debt cascade math
Handles up to 4 debts with distinct balances, APRs, and minimum payments. Cascades minimums as debts clear.
Interest-saved surface
Shows the concrete dollar amount of interest saved and months saved by picking the mathematically optimal strategy.
When it's useful
Compares the two most common debt-payoff frameworks — snowball and avalanche — side by side using your actual debts.
Anyone juggling multiple debts
Useful when you have credit cards, auto loans, and student loans and want to see the actual trade-off between paying the smallest off first vs the highest-APR first.
People considering debt consolidation
Compare the current scenario to a simulated consolidation — cut the number of rows to one and enter the consolidated loan terms to see the effect.
Budgeters looking for a motivation boost
The snowball method's faster first win is visible in the calculator — you can see exactly when each debt disappears and plan milestones around it.
Anyone reviewing a bank statement
Use alongside the bank statement analyzer to extract your real minimum payments and credit-card APRs from recent statements, then plug them in here.
Deeper context
How to decide between snowball and avalanche
Both methods work. The right choice depends on your debt mix and your relationship with motivation.
Pick avalanche if your APRs vary widely
If you have a 25% credit card alongside a 6% student loan, avalanche can save thousands of dollars. The math difference is real and meaningful.
Pick snowball if you've struggled to stay motivated
Eliminating a small debt in 3-6 months feels like winning. That feeling is often what keeps people going for the years-long slog against larger debts.
Or blend them
Many people use a hybrid: clear the smallest debt with the snowball approach for quick motivation, then switch to avalanche for the rest. The calculator's parallel view makes it easy to see the cost of that hybrid approach.
Deeper context
Common mistakes this calculator surfaces
A few assumptions trip up most debt-payoff planners.
Underestimating how long minimums alone take
Credit card minimums are typically set to 1-3% of the balance plus interest. Paying only minimums on a $5,000 balance at 22% APR takes over 20 years. Set extra payment to zero to see this effect.
Forgetting that cleared minimums cascade
When one debt is paid off, its minimum payment should roll into the extra-payment pool for the next priority debt. The calculator handles this automatically.
Including the mortgage mixed with other debts
Mortgage APRs are usually far lower than credit cards and may be tax-deductible. Mixing them with credit card debt muddies the picture. Model the mortgage separately.
FAQ