Debt Snowball Calculator

What this calculator does

This calculator runs the debt snowball strategy across all the debts you enter. It pays the minimum on every debt and applies any leftover from your monthly budget to the smallest balance. When that debt is gone, the freed-up payment rolls onto the next smallest. The result is your debt-free date and total interest paid, plus a side-by-side comparison to the avalanche method.

Why the snowball works

The snowball is not the fastest math, but it's often the fastest path to actually being debt-free — because people stick with it. Each debt you eliminate is a clear, finished win. After a couple of those wins, you've built the habit of redirecting freed-up money to the next target instead of letting it leak into spending.

Snowball vs avalanche

Both methods pay the same total each month. They only differ on which debt gets the “extra” after minimums:

• Snowball: smallest balance first. Quick wins, easier to stay motivated.
• Avalanche: highest APR first. Mathematically saves the most interest.

The interest difference between the two is usually only a few hundred dollars to a few thousand, depending on your debts. If that gap matters to you and you're confident you'll stick with it, avalanche wins. If you've struggled with debt payoff before, the snowball is worth the small premium.

Tips and common mistakes

• List every debt. Even small store cards. The snowball needs a clear ordering.
• Stop adding to balances. Switch to debit or cash while you pay off. No method works if balances keep growing.
• Build a $1,000 starter fund first. A flat tire shouldn't push you back into credit-card debt mid-plan.
• Roll over freed-up payments. When debt #1 clears, add its full payment to debt #2's extra. This is the engine of the snowball.

Frequently asked questions

What is the debt snowball method?

The snowball method orders your debts from smallest balance to largest, ignoring the interest rate. You pay the minimum on every debt and throw any extra at the smallest one. When that's gone, you roll its payment into the next smallest. The momentum builds — hence 'snowball'.

Why might I choose snowball over avalanche?

Behavioral psychology. Knocking out a small debt fast feels great and builds the habit of aggressive payoff. Avalanche saves more money mathematically, but if you've tried debt payoff before and given up, snowball's quicker wins make you more likely to stick with the plan. The best method is the one you'll actually finish.

How does this differ from just paying minimums?

Paying minimums on credit cards can take 15+ years and double the original balance in interest. The snowball method directs every spare dollar to a single debt, so principal drops fast and total interest plummets. Even an extra $100/month makes a dramatic difference.

How do I keep momentum once I pay off the first debt?

Take the entire payment you were sending to the cleared debt — minimum plus extras — and add it to the next debt's payment. Don't let that money slide back into your spending. Most people cite this 'rollover' habit as the key to making the snowball actually work.

Should I keep saving while paying off debt?

Most personal-finance authorities suggest a small starter emergency fund ($1,000) before aggressive debt payoff, so a flat tire doesn't push you back into using credit. After high-interest debt is gone, build a 3–6 month emergency fund and increase retirement contributions.

Should I close cards after I pay them off?

Generally no. Closing cards lowers your total available credit and shortens your average account age, which can hurt your credit score. Keep them open with a small monthly recurring charge auto-paid in full to keep them active.