Snowball or avalanche: how to actually get out of debt.

Debt is heavy in a way that’s hard to explain to someone who doesn’t have it. It’s not only the payments. It’s the mental arithmetic every time you buy something, the statement you don’t open, the sense that every raise is spoken for before it arrives. Getting out from under it is less about finding a clever trick than about choosing a plan and sticking to it long enough to see the balances fall.

The two most popular plans are the debt snowball and the debt avalanche. Both work. They differ on one question, which debt to attack first, and the debate over that question turns out to say a lot about how people actually behave with money.

First, stop the bleeding

Before choosing a method, it helps to see how expensive the status quo is. Credit card interest rates for people who carry a balance have averaged above 20% in recent years. At that rate, paying only a little more than the interest barely moves the balance.

Take a $5,000 card balance at 24% APR. Pay $150 a month and it takes about four and a half years to clear, costing roughly $3,300 in interest.

Double the payment to $300 and it’s gone in under two years, with about $1,150 in interest. The extra $150 a month saves more than $2,000.

(Since the CARD Act of 2009, your statement is required to show how long minimum payments alone would take. It’s worth reading once, and a little alarming.)

Then stop adding to the pile. No plan works while the balances are still growing. Take the cards out of your wallet, remove them from your phone’s wallet and the shopping sites that remember them, and pay for everything from checking or cash until the plan is done. You can keep the accounts open; just stop using them.

Two more things make any plan work better. First, a small cash cushion, even $1,000, so a flat tire doesn’t go straight back on the card. Second, knowing exactly what you owe: every balance, rate and minimum payment, in one list. Many people have never seen that list in one place, and seeing it is often the moment things start to change.

The debt snowball

Popularized by Dave Ramsey, the snowball orders your debts from smallest balance to largest, ignoring interest rates. You make minimum payments on everything, then throw every extra dollar at the smallest debt. When it’s gone, you roll its payment into the next smallest, and so on. The payment grows as it rolls, like a snowball.

The appeal is momentum. The first debt disappears quickly, sometimes in weeks, and each one after that disappears faster. Ramsey’s argument is that the plan that feels like winning is the one people finish.

The debt avalanche

The avalanche orders debts by interest rate, highest first, regardless of balance. Minimums on everything, every extra dollar to the most expensive debt, then roll the payment down the list.

Mathematically, it’s the best you can do. Every extra dollar goes where it’s costing you the most, so you pay the least total interest and finish at least as fast. Most financial planners and the Bogleheads community default to it.

A side-by-side example

Imagine a household with four debts, $20,500 in total, and $800 a month to put toward them:

• Store card: $1,200 at 29%, minimum $40
• Medical bill: $2,100 at 0%, minimum $75
• Visa: $7,400 at 24%, minimum $185
• Car loan: $9,800 at 6.9%, minimum $310

Run both methods and they finish in the same month: about 31 months, a little over two and a half years. The avalanche saves roughly $370 in interest, about $4,030 in total with the snowball against $3,660 with the avalanche.

Here’s the part the totals hide. Both methods clear the store card in month six. But the snowball wipes out the medical bill next, in month twelve, while the avalanche goes after the big Visa and doesn’t finish a second debt until month 28. That’s sixteen months of paying and paying with nothing new crossed off. For some people that’s fine. For others it’s exactly the stretch where they give up.

What the research says

Economists have studied this directly. A widely cited paper by David Gal and Blakeley McShane, published in the Journal of Marketing Research in 2012, looked at thousands of people in a debt settlement program. Those who closed out more individual accounts early on were more likely to eventually eliminate their debt entirely, regardless of the dollar amounts involved. Small, complete wins seemed to keep people going.

Later research published in Harvard Business Review pointed the same way: people felt more motivated when they concentrated on one account at a time and could see real progress on it, rather than spreading extra payments thinly across all of them.

Behavioral economists would call this unsurprising. We respond to visible progress and to finishing things. A debt that disappears is more motivating than a large balance that’s 12% smaller, even if the second is worth more.

So which should you use?

• If you’ve tried before and stalled, or the list is long and demoralizing: start with the snowball. The quick wins are the point.
• If you’re disciplined and motivated by numbers: use the avalanche and save the interest.
• If one debt has a much higher rate than the rest, say a 29% card next to a 5% car loan: the avalanche’s advantage is larger, and it’s probably worth it.
• If your debts have similar rates: it barely matters, so pick the one that feels better.

Plenty of people use a hybrid: knock out one or two tiny balances for momentum, then switch to highest-rate-first for the rest. That’s not cheating. The best method is the one you’re still following in month twenty.

Moves that speed up either method

1. 1

   Call and ask for a lower rate

   It sounds naive, but card issuers do lower rates for customers with a good payment history who ask, especially if you mention a competing offer. A five-minute call can be worth hundreds.

2. 2

   Consider a balance transfer

   A 0% introductory balance transfer card can pause interest for 12 to 21 months. There’s usually a 3 to 5% fee, and it only works if you stop using the old card and pay the balance off before the promotional period ends.

3. 3

   Look at a consolidation loan carefully

   A fixed-rate personal loan at a lower rate can simplify payments. It helps only if the rate is truly lower, the fees are small, and the cleared cards stay cleared.

4. 4

   Find money for the debt

   Tax refunds, bonuses, a side job, selling what you don’t use. Each lump sum shortens the timeline more than it seems.

5. 5

   Automate the payments

   Set every minimum on autopay so nothing is ever late, then make the extra payment on a fixed day each month.

6. 6

   Get real help if it’s too much

   If payments exceed what you can afford, a nonprofit credit counselor (look for NFCC membership) can set up a debt management plan with lower rates. Be wary of for-profit “debt settlement” companies that charge large fees and advise you to stop paying.

What about lower-interest debt?

Not all debt needs to be attacked. A mortgage at 3% or a car loan at 4% costs less than you can reasonably expect from long-term investing, and most planners would keep investing (especially up to any employer match) rather than prepay it. Federal student loans come with repayment options, like income-driven plans, that private loans don’t; check studentaid.gov before refinancing them privately, because the protections don’t come with you.

The rough dividing line many planners use: pay down anything above about 8% aggressively, and treat anything below about 4 to 5% as a normal bill while you invest. The middle is a judgment call. If being debt-free would change how you feel every day, that’s a legitimate reason to pay it off early.

After the last payment

The day the last debt disappears, you’ll have a monthly payment with nowhere to go. That’s the most valuable thing debt payoff creates: a habit of sending hundreds of dollars a month somewhere other than spending. Point it at your emergency fund and then at investing before your lifestyle quietly absorbs it.

And keep the oldest cards open, used lightly and paid in full. Closing them shortens your credit history and raises your utilization, both of which can lower your score just when you’ve earned a better one.

Keeping score

Foundation’s Pay off debt goals link to the loan or card you’re paying down and track progress as the balance falls, so you can see each one shrink. Your plan counts debt payments as bills, so your safe-to-spend figure already leaves room for them. It’s read-only, so payments are still made at your bank or lender.