Enter your debts and see exactly how fast you can pay them off using the snowball or avalanche method. Month-by-month schedule, total interest saved, payoff dates.
Snowball vs Avalanche: Understanding Both Methods
The debt snowball pays off your smallest balance first for psychological momentum. The debt avalanche pays your highest interest rate debt first to minimize total interest. Both work — the key variable is execution and consistency, not which method you choose.
The Hidden Power of Rolling Payments
Both methods share one powerful mechanic: when you pay off a debt, you take its minimum payment and roll it into the next target debt. A $100/month minimum on a paid-off car loan becomes extra ammo on your credit card. By your last debt, you may be throwing $600–$1,000/month at it from accumulated rolled payments plus your original extra amount.
What an Extra $200/Month Actually Does
On $30,000 in mixed debt (credit cards, car, student loans) at an average 15% APR, the difference between minimum payments and minimum plus $200/month extra is staggering: minimum-only takes about 22 years and costs $28,000 in interest. Adding $200/month gets you debt-free in about 6 years and costs $9,000 in interest. That $200/month difference saves $19,000 total.
When to Consider Debt Consolidation
If your credit score is above 680 and you’re paying 20%+ APR on multiple cards, a personal loan at 8%–12% APR can consolidate everything into one payment and cut your interest rate in half. Use our Loan Calculator to model the consolidation numbers, and our Credit Card Payoff Calculator to compare minimum vs fixed payment scenarios per card.
Frequently Asked Questions
On $20,000 in credit card debt at 22% APR, minimum payments (2% of balance) take 30+ years and cost more than $30,000 in interest. The fastest path is maximum extra payments using the avalanche method — highest APR card first. An extra $400/month above minimums gets you debt-free in about 4.5 years and saves approximately $25,000 in interest. Consider a balance transfer to a 0% APR card for 15–21 months if your credit score is above 670.
Mathematically, avalanche (highest rate first) always saves more money. Psychologically, snowball (smallest balance first) produces faster visible wins that research shows keeps people on track. The best method is whichever one you stick with. If you're highly motivated by numbers, use avalanche. If you need wins to stay motivated, use snowball. The difference in total interest between methods is usually $500–$2,000 — smaller than most people think. Run both scenarios in the calculator above to see the exact difference for your specific debts before deciding.
Always capture your full 401(k) employer match first — that is a guaranteed 50%–100% return. After that, pay off any debt above 7%–8% APR before investing further. Credit card debt at 22% APR is a guaranteed 22% return to eliminate — no investment reliably beats that on a risk-adjusted basis. Once all debt is under 7%, you can invest and pay down debt simultaneously. Use our [Compound Interest Calculator](/calculators/compound-interest-calculator/) to model the growth side of that equation.
List all debts from smallest balance to largest. Pay minimums on every debt. Throw every extra dollar at the smallest balance. When it is paid off, take its minimum payment and add it to the next smallest debt. The freed-up minimums compound as you go — by the time you reach your largest debt, your snowball payment may be $500–$800/month. The psychological win of seeing a balance hit zero is what keeps people following through.
Even $50 extra per month matters. On a $5,000 credit card balance at 22% APR, adding $50 above the minimum cuts payoff time by over a year and saves about $1,200 in interest. Look for any opportunity to free up cash: cancel unused subscriptions, reduce dining out, sell unused items. Every dollar above the minimum works to your advantage immediately.
