About this calculator

How-to: enter each debt's balance, APR and minimum payment, plus an extra amount you can pay every month. Avalanche routes the extra to the highest APR (mathematically optimal). Snowball routes it to the smallest balance (behaviourally motivating). We simulate month-by-month until each debt is paid off.

Frequently asked questions

Which method should I choose?

If your highest APR is more than ~5% above your lowest, Avalanche saves real money. If motivation is the issue, Snowball's quick wins keep people on track.

What if I have more than 3 debts?

The principle scales. This tool models 3 as a snapshot; for a full debt inventory, list all of them, sort by APR (Avalanche) or balance (Snowball) and pay minimums on everything, extra on #1.

Should I consolidate first?

Consolidation makes sense if the new APR is meaningfully lower (e.g. 22% cards to a 9% personal loan) AND you close the cards to avoid re-loading them.

What does the Debt Avalanche vs Snowball Payoff Strategy Calculator do?

Compare Avalanche (highest APR first) vs Snowball (smallest balance first) payoff on up to five debts — see months saved and interest saved. How-to: enter each debt's balance, APR and minimum payment, plus an extra amount you can pay every month. Avalanche routes the extra to the highest APR (mathematically optimal). Snowball routes it to the smallest balance (behaviourally motivating). We simulate month-by-month until each debt is paid off.

Is the Debt Avalanche vs Snowball Payoff Strategy Calculator free to use?

Yes. Every calculator on Calcurly.com is free, works in your browser without sign-up, and can be embedded on your own website.

How accurate is the Debt Avalanche vs Snowball Payoff Strategy Calculator?

Results are calculated in real time using industry-standard formulas. Treat the output as a well-informed estimate — always cross-check with local regulations, product datasheets, or a qualified finance professional before committing to a purchase or a job.

What inputs does the Debt Avalanche vs Snowball Payoff Strategy Calculator need?

Enter values for: Extra monthly payment (on top of minimums), Debt 1 balance, Debt 1 APR (%), Debt 1 minimum, Debt 2 balance, Debt 2 APR (%). Sensible defaults are pre-filled where possible so you can start with a single change.

Can I embed the Debt Avalanche vs Snowball Payoff Strategy Calculator on my own website?

Yes — copy the iframe snippet at the bottom of this page, or use the Embed Generator to customise the size. The embedded version stays in sync with the live calculator on Calcurly.com.