Key facts
- Card math
- Interest accrues monthly; payment must exceed interest to amortize
- Avalanche
- Highest APR first — usually least interest mathematically
- Snowball
- Smallest balance first — behavioral wins, possibly more interest
- Minimum trap
- Minimum-only paths can last many years
- Consolidation
- Compare total cost with loan comparison — fees matter
- Budget link
- Take-home and emergency fund protect the plan
- Student loans
- Federal plans differ — StudentAid.gov is authoritative
- Advice status
- Educational simulation — not credit counseling
Single card payoff
Enter balance, APR, and payment in the Credit Card Payoff Calculator. If payment ≤ monthly interest, the balance grows — the tool warns you.
Issuer minimum formulas vary; check your card agreement rather than assuming a fixed percent.
Multiple debts: snowball vs avalanche
The Snowball vs Avalanche Calculator orders up to three debts and throws leftover budget at the target debt after illustrative minimums.
Avalanche usually minimizes interest; snowball prioritizes quick wins. Either path still needs a sustainable budget from take-home planning.
When loans enter the picture
If comparing a consolidation loan, use personal loan and loan comparison for total cost — lowest monthly payment is not always cheapest.
Federal student loans may offer income-driven plans: see student loan payoff for simple amortization math and StudentAid.gov for program rules.
Related calculators
Human-labeled links into the CalculatorUSA calculator set—mortgage, pay, debt, loans, and more.
All calculators · Mortgage & home · Tax & pay · Debt payoff · Home
Sources & further reading
Also see methodology, accuracy & sources, and editorial policy.
FAQ
Which is better: snowball or avalanche? ▾
Mathematically, avalanche (highest APR first) usually costs less interest. Snowball can be easier to stick with. The “best” plan is one you fund consistently.
Why do minimum payments take so long? ▾
Minimums are often a small percent of balance, so most of the early payment can go to interest. Raising the fixed payment shortens the timeline nonlinearly.
Is consolidating always smarter? ▾
Only if the new APR/fees and term reduce total cost without stretching risk. Compare totals, not just monthly payment.
Does this affect my credit score? ▾
This site does not access credit files. Real-world score effects depend on utilization, history, and new accounts — ask a reputable counselor if needed.
Should I empty my emergency fund to pay debt? ▾
That is a personal risk tradeoff. Many people keep a small cash buffer. Use the emergency fund calculator for runway math.
Where can I learn more as a consumer? ▾
CFPB credit card and debt tools are a good public starting point.