Debt Payoff Calculator (Snowball & Avalanche)
All your debts in one plan: how long to debt-free and what the extra payment saves.
Snowball vs avalanche
Both methods pay every minimum, then throw everything extra at one target debt. The avalanche targets the highest interest rate, which is mathematically cheapest. The snowball targets the smallest balance, which clears whole debts sooner and keeps people motivated. The dollar difference between them is usually smaller than people expect; the method you stick with is the right one.
How the rollover works
When a debt is paid off, its minimum payment does not go back into your budget: it rolls into the attack on the next target. That is why payoff accelerates toward the end and why a modest extra payment early on shortens the whole plan by more than it seems.
If the numbers say never
When minimum payments do not even cover the monthly interest, the balance grows forever. The fix is some combination of a lower rate (balance transfer, consolidation) and a bigger monthly amount. Even a small fixed extra converts an endless treadmill into a finite plan with a date on it.