💳 Debt Payoff Planner
Compare snowball vs avalanche methods to eliminate debt faster and save money on interest
How This Calculator Works
This calculator compares two popular debt payoff strategies: Debt Snowball (pay off smallest balance first for psychological wins) and Debt Avalanche (pay off highest interest rate first for maximum savings). Both methods apply the same principle: make minimum payments on all debts, then attack one debt aggressively with extra payments. When that debt is eliminated, roll its payment into the next target debt, creating a "snowball" effect.
The calculator shows payoff timelines, total interest paid, and monthly payment strategies for both methods. Avalanche saves more money mathematically (attacks expensive high-interest debt first). Snowball provides faster wins (eliminates small debts quickly for motivation). For most people, avalanche saves $1,000-$5,000+ compared to snowball, but snowball has higher completion rates because early wins build momentum.
Example Calculation
Example: $35,000 Debt Across 4 Accounts
Debts: Credit Card 1: $8,000 @ 22% APR. Credit Card 2: $3,000 @ 19% APR. Car Loan: $15,000 @ 6% APR. Student Loan: $9,000 @ 4.5% APR
Strategy: $1,200/month total budget for debt payments
Snowball Order (smallest balance first): Card 2 ($3k) → Card 1 ($8k) → Student ($9k) → Car ($15k). First win in 3 months. Payoff: 38 months, $6,890 interest paid
Avalanche Order (highest rate first): Card 1 ($8k @22%) → Card 2 ($3k @19%) → Car ($15k @6%) → Student ($9k @4.5%). First win in 8 months. Payoff: 36 months, $5,240 interest paid
Savings: Avalanche saves $1,650 and finishes 2 months faster by attacking the expensive 22% credit card first instead of the small balance. However, snowball gives a psychological win in month 3 vs month 8.
Best Choice: If you're disciplined and motivated, use avalanche to save $1,650. If you've failed debt payoff before and need quick wins for motivation, use snowball. Completing the journey is more important than the mathematically optimal path.
Common Questions
Should I pay off debt or invest?
Pay off high-interest debt first (credit cards 15%+, payday loans, etc). You cannot reliably earn 18% investment returns to beat an 18% credit card. Exception: If your employer matches 401(k), contribute enough to get the full match (it's free money), then attack debt. For moderate debt (4-7% car/student loans), it's debatable - mathematically investing wins over time, but debt payoff guarantees the return and frees cash flow. Low-interest debt (2-4% mortgages) should generally be kept while investing - 7% stock returns beat 3% mortgage costs.
What if I can only make minimum payments?
Making only minimums keeps you in debt for decades and costs tens of thousands in interest. A $10k credit card at 18% APR with $200 minimum payments takes 94 months and $8,700 in interest. Adding just $50 extra monthly cuts it to 54 months and $3,900 interest - saving $4,800. Find ANY way to pay extra: cut expenses, side hustle, sell stuff. Even $25-50 extra monthly compounds to massive savings. Use our calculator to see exactly how much time and money each extra $50 saves you.
Should I consolidate debt into a single lower-rate loan?
Consolidation works IF: (1) The new rate is meaningfully lower (at least 3-4 points), (2) You don't run up the old cards again (60% of people do, ending up in worse shape), (3) Fees don't eat the savings. Balance transfer cards with 0% for 12-18 months are powerful tools if you can pay off the balance before the promo ends. Personal consolidation loans at 8-12% beat credit cards at 18-24%. NEVER consolidate into home equity - that converts unsecured debt into secured debt, risking foreclosure if you can't pay.