Debt calculator

Debt Snowball vs Avalanche Calculator

Compare two common debt payoff strategies. Avalanche targets the highest APR first. Snowball targets the smallest balance first for faster early wins.

Key takeaway: Avalanche usually saves the most interest. Snowball may help if early wins keep you motivated enough to stick with the plan.
Avalanche interest
$1,157

Order: Card A → Card B → Loan

Snowball interest
$1,218

Order: Card B → Card A → Loan

Interest difference
$61

Positive means avalanche saves more interest.

Payoff time difference
0 months

Difference between the two modeled timelines.

The avalanche method saves about $60.74 in interest based on these estimates. The snowball method may still be useful if faster early wins help you stay motivated.
View payoff timelineSecondary detail: compare monthly target debt, interest, payment, and total remaining balance by method.Show

Avalanche timeline

MonthTarget debtPaymentInterestTotal balance
1Card A$485.00$115.50$8,830.50
2Card A$485.00$109.66$8,455.16
3Card A$485.00$103.70$8,073.86
4Card A$485.00$97.64$7,686.50
5Card A$485.00$91.47$7,292.97
6Card A$485.00$85.19$6,893.16
7Card A$485.00$78.80$6,486.96
8Card A$485.00$72.29$6,074.25
9Card A$485.00$65.67$5,654.92
10Card A$485.00$58.93$5,228.85
11Card A$485.00$52.07$4,795.92
12Card A$485.00$45.08$4,356.00
… middle months hidden for readability …
22Loan$172.44$1.28$0.00

Snowball timeline

MonthTarget debtPaymentInterestTotal balance
1Card B$485.00$115.50$8,830.50
2Card B$485.00$110.66$8,456.16
3Card B$485.00$105.74$8,076.90
4Card B$485.00$100.74$7,692.64
5Card B$485.00$95.69$7,303.33
6Card B$485.00$90.56$6,908.89
7Card A$485.00$84.27$6,508.16
8Card A$485.00$77.73$6,100.89
9Card A$485.00$71.07$5,686.96
10Card A$485.00$64.28$5,266.24
11Card A$485.00$57.37$4,838.61
12Card A$485.00$50.33$4,403.94
… middle months hidden for readability …
22Loan$233.18$1.74$0.00

How this estimate works

  • Both strategies pay minimums on all debts first.
  • Avalanche applies extra payment to the highest APR debt until it is paid off.
  • Snowball applies extra payment to the smallest balance until it is paid off.
  • The calculator simulates monthly interest and payoff progress for each method.
These results are estimates for educational purposes only. They are not financial, legal, tax, or credit counseling advice. Actual payoff dates, interest charges, fees, and payment requirements may vary.

Common questions

Which method is mathematically better?

Avalanche is usually better mathematically because it attacks higher-interest balances first.

Why would anyone choose snowball?

Snowball can create faster visible wins, which may help some people stay consistent.

Should I still make minimum payments?

Yes. Both methods assume you continue making minimum payments on every debt and add extra money to one target debt.