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Debt

Debt Snowball Calculator

Enter balances, rates, and minimum payments for 3 debts plus any extra payment to model the debt snowball strategy.

Updated July 2026 · Editorial standards

Debt-free in
50 months
Total interest
$9,065
Total paid
$35,065
Payoff orderDebt 1 → Debt 2 → Debt 3Years4.2 yrsExtra payment$200/mo

Debt Details

Debt 1

$
%
$

Debt 2

$
%
$

Debt 3

$
%
$

Extra Payment

$

Key figures

Payoff time
50 mo (4.2 yrs)
Total interest
$9,065
Total paid
$35,065
Total debt balance
$26,000

Snowball order: Debt 1 → Debt 2 → Debt 3. Payoff in 50 months with $9,065 total interest.The debt snowball method pays minimums on all debts and throws extra money at the smallest balance first. The psychological wins from eliminating debts motivate continued payoff — though the debt avalanche (highest rate first) minimizes total interest.

Debt-free in
50 months
By KalkWiseVerified against official sources Updated July 2026

What is the debt snowball calculator — payoff order & timeline?

In short

The debt snowball method pays minimums on every debt while throwing extra cash at the smallest balance first, building momentum as each one clears. Example: three debts totaling $17,000 with $200 extra per month clear in about 8, 18, and 30 months — debt-free in roughly 2.5 years, paying about $3,200 in total interest.

Models the debt snowball payoff strategy for 3 debts, showing payoff order, months per debt, total interest paid, total amount paid, and debt-free date.

How to use this calculator

  1. 1Enter balance, interest rate, and minimum payment for each debt.
  2. 2Enter any extra monthly payment you can afford beyond minimums.
  3. 3Results show debts sorted smallest-to-largest (snowball order) with months to payoff.

The formula

Sort: smallest balance first
extra payment→smallest debt
when paid→roll to next debt
Sort debts smallest-to-largest; pay minimums on all; add extra to smallest; when paid, roll its minimum to next smallest
B
— Debt balance
r
— Monthly interest rate
M
— Minimum payment
E
— Extra payment

Worked example

The scenario

Debt 1: $2,000 at 18%, $50 min. Debt 2: $5,000 at 15%, $100 min. Debt 3: $10,000 at 12%, $200 min. $200 extra/month.

gives

The result

Debt 1 paid off in ~8 months. Debt 2 in ~18 months. Debt 3 in ~30 months. Total interest: ~$3,200. Debt-free ~2.5 years.

Common use cases

  • Plan a concrete debt payoff timeline.
  • Model whether extra payment helps significantly.
  • Compare debt snowball to debt avalanche (highest rate first).
  • Set psychological milestones for debt payoff motivation.

Limitations & assumptions

  • Snowball method costs more total interest than the avalanche method (highest rate first) — the trade-off is psychological wins vs. math efficiency.
  • Models exactly 3 debts; for more debts, add them to debt 2 or 3.
  • Does not model minimum payment changes (some credit cards recalculate minimums monthly).
  • Balance transfers or refinancing could reduce interest — model separately.

Frequently asked questions

Mathematically, the avalanche method (highest interest rate first) saves more on total interest — paying a 24% credit card before a 7% loan always wins on the math. But studies show the snowball method leads to higher completion rates because early wins boost motivation. The 'best' method is the one you stick to.

Disclaimer: KalkWise calculators are provided for general informational and educational purposes only and do not constitute financial, investment, tax, or legal advice. Results are estimates based on the figures you enter and the assumptions described above. Actual outcomes will vary. Consult a qualified professional before making financial decisions.