The Debt Avalanche Method
Kill the most expensive debt first, mathematically.
- Difficulty
- Easy
- Time to result
- ~months to results
- Steps
- 5
- Confidence
- 90%
The Avalanche Method is the cheapest, fastest mathematical route out of debt: stack debts highest interest rate to lowest, make minimum payments on everything, and pour all spare cash into the top-rate debt until it's gone, then move down the list. Chatzky separates revolving high-rate debt (attack it) from long-term installment debt like student loans and mortgages (pay on schedule). Federal student-loan strugglers should enroll in an income-driven repayment program rather than rushing payoff. The method is about minimizing total interest, not emotional momentum.
Origin
Chatzky, a longtime personal-finance journalist and CEO of HerMoney, teaches the avalanche approach as the interest-minimizing counterpart to the more emotional 'snowball' method, framing it as the objectively cheapest way to retire debt.
Core principles
- 01Interest rate, not balance, determines what a debt actually costs you.
- 02Paying the highest-rate debt first minimizes total interest paid.
- 03Keep every other debt current on minimum payments while you attack the top one.
- 04Long-term installment debt (student loans, mortgages, car loans) is a different beast — pay those on schedule.
How to run it
- 1
Inventory your debts by rate
Write down every debt alongside its interest rate, not its balance. The rate is what determines the true cost.
Pro tip Credit cards average around 28% APR — those almost always sit at the top.
- 2
Rank highest to lowest interest
Order the list from the highest interest rate down to the lowest so you know exactly what to attack first.
- 3
Pay minimums on everything, extra on the top
Make the minimum payment on every debt to stay current, then direct all remaining money at the single highest-rate debt.
Watch out Missing a minimum payment damages your credit score and can spike your rate further.
- 4
Roll down the ladder
Once the highest-rate debt is cleared, move that freed-up money to the next-highest debt, and continue until all revolving debt is gone.
- 5
Treat long-term debt differently
Pay student loans, mortgages, and car loans on their given schedule rather than accelerating. For federal student loans, enroll in an income-driven repayment program if you're struggling.
Watch out Don't let fast debt payoff crowd out a 401k match — a 50% match beats paying off a 6% loan faster.
In the wild
Chatzky illustrates the trade-off: a student loan at 6% is equivalent to earning a 6% return by paying it down. A 401k employer match of 50 cents on the dollar is a 50% return. So you grab the match first and simply pay the 6% debt off a little more slowly.
→ You capture a 50% return instead of over-prioritizing a 6% one, ending up materially wealthier.
Common mistakes
Prioritizing debt payoff over the 401k match
Racing to kill a 6% debt while skipping a 50% employer match forfeits the highest guaranteed return available to you.
Rushing student loans like credit cards
Long-term federal debt has repayment protections and lower rates; treating it like a 28% card wastes leverage and flexibility.
Is it for you?
Best for
Anyone carrying multiple revolving/high-interest debts, especially credit-card balances at ~28% APR.
Not ideal for
People who need psychological quick wins from clearing small balances, or those whose only debt is low-rate long-term installment debt.
From the transcript
“the cheapest fastest way to pay off debt is to just stack it highest interest rate to lowest interest rate pay off the highest interest…”
“if you're getting 50 cents on the dollar as a match in your 401k that's a 50% return on your money and you can't not…”
From the episode
Jean Chatzky: Master Your Money, How to Optimize Your Earnings and Wealth
Jean Chatzky