High-interest debt is one of the biggest barriers to building wealth. Our debt payoff calculator lets you compare the two proven debt elimination strategies—the debt avalanche (highest interest first) and the debt snowball (smallest balance first)—showing exactly how long payoff takes and total interest paid under each approach.
The debt avalanche method pays minimum payments on all debts, then puts all extra money toward the debt with the highest interest rate first. Mathematically, this minimizes total interest paid and is the most efficient strategy. Once the highest-rate debt is paid off, roll those payments to the next-highest.
The debt snowball method pays minimum payments on all debts, then targets the smallest balance first regardless of interest rate. Once the smallest is paid off, roll that payment to the next smallest. It is less mathematically optimal but provides psychological wins that help people stay motivated.
The avalanche method saves more money. The snowball method helps people stay on track. Research shows many people stick with snowball longer because the quick wins reduce debt fatigue. The best method is the one you actually stick with—if motivation is a challenge, snowball often wins in practice.
Common sources include: reducing discretionary spending, negotiating lower bills (insurance, internet), selling unused items, picking up extra work or freelance income, and redirecting windfalls (tax refund, bonus). Even an extra $100–$200/month significantly shortens payoff time on high-interest debt.
Debt consolidation combines multiple debts into one, ideally at a lower interest rate, simplifying payments. Options include a personal loan, balance transfer credit card (0% intro APR), home equity loan, or HELOC. Be cautious: consolidation helps only if you stop adding new debt.
Extra payments directly reduce principal, which in turn reduces future interest. On a $20,000 balance at 19% APR, paying an extra $200/month can cut payoff time from 13 years to under 4 years and save thousands in interest. The sooner extra payments are made, the more powerful the effect.