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Written by Jere SalmistoReviewed by CalcFi EditorialLast verified:

Debt Payoff Calculator — Find Your Debt-Free Date

Compare avalanche vs snowball across multiple debts. See exactly when you'll be debt-free and how much interest you'll save.

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Household

Model your numbers solo or as a couple. Saved as one household decision either way.

Your Debts

3 / 10

Sum of minimums: $325

Extra goes to the highest-APR debt first (mathematically optimal).

Assumptions
  • ·Fixed-APR amortization; tracks payoff date and interest across multiple entered debts
  • ·Extra payment allocation: avalanche (highest APR), snowball (lowest balance), or custom
  • ·Total interest saved and payoff date acceleration vs. minimums-only shown
  • ·Month-by-month balance decline charted per debt account
When this is wrong
  • ·Variable APR changes (Prime-linked cards) will shift optimal payoff ordering over time
  • ·Balance transfer or consolidation opportunity may warrant different approach
  • ·Charge-off and settlement scenarios require different math — not modeled here
  • ·Minimum payment reduction as balance declines (1–2% of balance) not auto-updated
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Your Results

Based on your inputs

Demo numbers · replace inputs to see yours
Debt-Free In
4y 8m

Strategy: avalanche

Stay on this pace and you're done with this debt 4y 8m from today. Each extra $100/mo cuts roughly 1-2 months off the timeline depending on APR.

Interest Saved vs Minimums
$8,308positivepositive trend

Total interest: $4,945

Sticking to avalanche instead of paying minimums saves $8,308 in interest. That's money the bank doesn't get — keep it.

Total Balance Paydown

Per-Debt Payoff Timeline

Credit Card A1y 2m · $465 interest
Credit Card B2y 5m · $1,571 interest
Student Loan4y 8m · $2,910 interest
Total Starting Balance$23,000
Monthly Budget$500
Sum of Minimums$325
Extra Applied to Priority$175
Total Interest (this strategy)$4,945
Total Interest (minimums only)$13,253
Interest Saved$8,308

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Published byJere Salmisto· Founder, CalcFiReviewed byCalcFi EditorialEditorial standardsMethodology

Primary sources & authoritative references

Every formula on this page traces to a federal agency, central bank, or peer-reviewed institution. We cite the rule-makers, not secondhand blogs.

Found an error in a formula or source? Report it →

Calculations are for educational purposes only. Consult a qualified financial advisor for personalized advice.

Reviewed by CalcFi Editorial · Verified against CFPB Regulation Z + APR disclosures