Debt snowball calculator

The debt snowball pays the smallest balance first, then rolls its payment into the next. Enter your debts and see the month each one disappears, your debt-free date, and what the avalanche order would cost instead.

Medical bill
Store card
Credit card
Car loan

Snowball

2 years 3 months
debt-free after 27 payments

$1,150.60 of interest, $12,570.60 paid in all

  1. Medical bill month 3
  2. Store card month 7
  3. Credit card month 14
  4. Car loan month 27

Avalanche

2 years 2 months
debt-free after 26 payments

$1,048.83 of interest, $12,468.83 paid in all

  1. Medical bill month 12
  2. Credit card month 12
  3. Store card month 14
  4. Car loan month 26

Snowball clears its first debt in month 3, and avalanche its first in month 12. Avalanche would save $101.77 of interest and 1 month: that is the price of the early wins.

Month by month (27 months)
MonthPaidInterestOwed after
1$480.00$90.19$11,030.19
2$480.00$88.66$10,638.85
3$480.00$87.13$10,245.98
4$480.00$84.67$9,850.65
5$480.00$81.20$9,451.85
6$480.00$77.69$9,049.54
7$480.00$74.14$8,643.68
8$480.00$69.29$8,232.97
9$480.00$63.78$7,816.75
10$480.00$58.17$7,394.92
11$480.00$52.49$6,967.41
12$480.00$46.69$6,534.10
13$480.00$40.81$6,094.91
14$480.00$34.83$5,649.74
15$480.00$30.13$5,199.87
16$480.00$27.73$4,747.60
17$480.00$25.32$4,292.92
18$480.00$22.90$3,835.82
19$480.00$20.46$3,376.28
20$480.00$18.01$2,914.29
21$480.00$15.54$2,449.83
22$480.00$13.07$1,982.90
23$480.00$10.58$1,513.48
24$480.00$8.07$1,041.55
25$480.00$5.55$567.10
26$480.00$3.02$90.12
27$90.60$0.48$0.00

Runs entirely in your browser on the debt engine of the Tavala app. Nothing you type is sent or kept.

How the debt snowball works

List every debt from the smallest balance to the largest, whatever the interest rate. Pay the minimum on all of them. Put everything you can spare on top on the smallest. When it is gone, add its payment to the next smallest, and so on. The amount leaving your account each month stays the same until the last debt is paid; only where it goes changes. That is the method as Ramsey Solutions describes it, and the reason it gives is the quick wins.

The calculator runs that order on the Tavala app's own debt engine: interest of a twelfth of the yearly rate each month, rounded to the cent, minimums first, then the extra and every freed payment to the smallest balance. Two debts with the same balance keep the order you listed them in.

Four debts, snowball against avalanche

A medical bill of $480 at 0%, a store card of $900 at 12%, a credit card of $2,140 at 21.9% and a car loan of $7,900 at 6.4%, with minimums of $40, $35, $65 and $190 and $150 a month on top: $480.00 a month in all.

The same $480.00 a month, two orders
WhatSnowballAvalanche
Debt-free in2 years 3 months2 years 2 months
Interest$1,150.60$1,048.83
Medical bill goneMonth 3Month 12
Store card goneMonth 7Month 14
Credit card goneMonth 14Month 12
Car loan goneMonth 27Month 26
Computed with the calculator's engine.

Snowball clears two debts by month 7 and costs $101.77 more interest than avalanche, and 1 month more. The $150.00 on top is worth far more than the choice of order: against the minimums alone, it saves $842.14 of interest and 1 year 2 months.

When one of the debts is in another currency

Say the credit card is a €1,980 card with a €60 minimum, planned in dollars at an example rate of 1 EUR = 1.08 USD. The calculator converts it first, to $2,138.40, and the snowball order is then by the converted balance; the plan finishes in 2 years 3 months with $1,150.67 of interest. If the euro rises while you pay, the dollar value of what is left rises with it. The Tavala app plans the same way, converting at today's rate each time it plans; see debt payoff in Tavala.

What it assumes

One rate per debt, payments on time at the end of each month, and no new borrowing. The figures are arithmetic, not advice about what to pay; a debt in collections or one with a promotional rate about to end may need to come first whatever its size.

Words this page uses

Snowball
Every debt gets its minimum; every spare unit goes to the smallest balance. When it is gone, its payment rolls to the next smallest.
Avalanche
The same, but the extra goes to the highest interest rate first. It costs the same or less interest.
Rollover
When a debt is paid off, its minimum keeps being paid, to the next debt in the order, so the monthly total never drops.
Debt-free date
The month the last debt reaches zero, if every payment is made on time and nothing new is borrowed.
APR
The yearly interest rate. A twelfth of it is charged each month on what is owed.

Questions

Is the debt snowball a good idea?
It is a good idea if early wins keep you paying. It almost never costs less interest than the avalanche order: on the four example debts it costs $101.77 more. A study of nearly 6,000 people in a debt settlement program found that the number of accounts closed predicted finishing the program better than the share of dollars repaid, which is the case for snowball.
Does the snowball method ignore interest rates?
Yes, by design: the order is by balance only. A small card at a high rate can wait behind a smaller one at zero. That is why the calculator shows the avalanche order beside it, so you can see the price of the order in money.
Can I share my plan?
Yes. Copy a link to this plan puts your debts in the link itself, after the #, a part of the address browsers never send to a server. Whoever opens the link sees the same plan; nothing is stored anywhere.
Can I use it for debts in different currencies?
Yes. Give each debt its currency and the rate to plan at, and the calculator converts every debt into one currency first, as the Tavala app does. The snowball order is then by the converted balance.

Start with what you spent today.

There is no account to create and no card to enter. Pick your currency, add what you paid, and Home shows what is left.