• looked at my student loans again and still dont know which method is right
  • read about snowball and avalanche for an hour and feel more confused than before
  • everyone acts like this is obvious but nobody actually explained it for my situation
  • i just want someone to tell me which one to use for my actual numbers

SnowballvsAvalancheforStudentLoans

Compare the methods on your real numbers — without connecting your bank.

You are not confused because the explanations are bad. You are confused because the explanations are general and your loans are specific. A 6% Stafford from 2014 behaves differently than a 7.9% Grad PLUS from 2019. The right method for your loans is the one whose math advantage outweighs the motivation cost — and that depends on the spread between your highest-rate and lowest-rate balance.

For most student-loan portfolios, Avalanche wins. Federal student loans cluster in a tight rate band (5%-7.9%) over a long horizon (10-25 years), and Avalanche saves $1,000-4,000 over the full payoff at typical $45,000 portfolios. The exception: if your smallest loan is also the lowest-rate balance and finishing it would unlock a meaningful psychological gain, Snowball is defensible. Otherwise the math wins.

On $45,000 across a typical mix (one $20k Direct Sub at 4.5%, one $15k Direct Unsub at 6.5%, one $10k Grad PLUS at 7.9%), Avalanche finishes in 119 months at $13,400 interest. Snowball finishes in 121 months at $14,900 interest — $1,500 difference, two months later. Use the calculator with your actual rates to see your specific spread.

Pre-loaded with a typical 3-loan student portfolio at standard rates. Your numbers stay on your device — no bank login. The math is the same amortization every loan servicer uses — see the methodology. Adjust the rates and balances to match your actual statements.

Your numbers

Pre-loaded with a typical student loan debt profile

Update with your actual numbers after you unlock the full calculator.

Nickname
Balance
Rate
Min payment
Direct Subsidized Loan$20,0004.5%$207
Direct Unsubsidized Loan$15,0006.5%$170
Grad PLUS Loan$10,0007.9%$121

Recommended: Avalanche for this debt profile.

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Method-specific questions

Common questions

  • Avalanche, for most portfolios. On $45,000 of typical federal loans, Avalanche saves about $1,500 over Snowball over a 10-year payoff. The savings widen if your portfolio includes Grad PLUS loans (7.9%) alongside subsidized loans (4.5%) — the bigger the rate spread, the bigger the Avalanche advantage.

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