Debt Snowball Calculator
Pay smallest balances first to build momentum. See your payoff order, debt-free date and total interest.
Inputs
Result
Visual breakdown
Payoff order
- 1.Card A10 mo · interest $122.07
- 2.Card B2 yr 3 mo · interest $947.64
- 3.Loan3 yr 0 mo · interest $1,017.43
System view
See how this fits into your full financial system.
Zoom out and connect income, expenses, debt, savings, housing, transportation, and runway in one private system view.
Formula
Each month: pay minimums on all debts, then apply extra + freed-up minimums to the smallest active balance.
Example
3 debts, +$100/mo extra (snowball) → smallest balance clears first; momentum compounds as freed-up minimums roll into the next target.
Related: Avalanche · Single debt · Credit card
How to use
- Add each debt with balance, APR, and minimum payment.
- Enter an optional extra amount to apply each month.
- Read your payoff order, debt-free date and total interest.
- Switch strategies to compare snowball vs. avalanche.
When it's useful
- You want quick wins to stay motivated.
- You're comparing payoff strategies.
- You're planning a realistic debt-free timeline.
Common examples
Common answers
- Where do I see my debt-free date?In the result panel after entering all debts and any extra payment.
- How does the snowball 'snowball'?Each cleared minimum rolls into the next-smallest balance, growing your attack amount.
- Will snowball beat avalanche?Usually not on total interest — but it often wins on motivation and follow-through.
- Can I add a new debt mid-plan?Add it now and recompute — the plan is recalculated from scratch.
- What if a minimum is below the interest charge?The balance grows. Increase the minimum or extra payment until the plan is feasible.
Frequently asked
Snowball vs avalanche — which is better?
Avalanche usually saves the most interest. Snowball delivers faster early wins, which helps people stick with the plan.
What counts as 'extra'?
Anything above your sum of minimums. Even $25–$50/mo extra makes a visible dent.
Are paid-off minimums reused?
Yes — when a debt clears, its minimum rolls into the pool attacking the next target (the 'snowball' itself).
Does this assume fixed APRs?
Yes. Revisit if a card's promo period ends or a variable rate changes.
What if my minimum is below the interest charge?
Then the balance grows. The plan will report as not feasible — increase the minimum or extra payment.
People also calculate
More money & work →Estimates only — not financial advice. Real plans depend on statement dates, fees and behavior.