Avalanche: highest interest first, the math-optimal answer
Okay. New module. We finished up the report stuff — errors, disputes, the emotional gut-punch some of you got looking at your own report for the first time, which, again, no worries at all, that's normal. Now we're moving into the part everybody actually wants: paying the debt down.
So there's two famous methods for this. Today's the one that wins on paper. Next lesson's the one I actually tell people to use, and I'll explain why they're not the same recommendation.
What the avalanche is
List out every debt you have — cards, that store card from the furniture place, whatever. Write down the balance and the interest rate on each one.
Then you pay minimums on everything, and you take every extra dollar you have and throw it at whichever one has the highest interest rate. Not the highest balance. The highest rate. Once that one's gone, you roll its whole payment into the next-highest rate, and so on down the list. Like snow picking up more snow, except downhill toward the worst APR instead of the biggest number.
Mathematically this is correct. If your goal is "pay the least total interest possible," the avalanche wins every time, no exceptions. That's just how compounding works — the debt charging you 24% is costing you more every single month than the one charging you 9%, regardless of which one has the bigger balance sitting on it.
How to actually set it up at home
- Grab every statement — paper, PDF, whatever, doesn't matter, just get them all in front of you at once. I'm a kitchen table guy myself, some of you know that story.
- Write down: creditor name, balance, interest rate, minimum payment. Four columns, that's it.
- Sort by interest rate, highest to lowest. Ignore the balance column for sorting purposes — I know it's tempting to sort by that instead, hold off.
- Pay the minimum on every single one. Miss a minimum and you can get hit with a late fee and a rate increase, so this part isn't optional, this is the floor.
- Whatever extra money you've got for debt that month, all of it goes to the top of the list. Not split up. Not spread around to feel like you're "doing something" on all of them. All of it, on the top one.
- When the top one hits zero, don't celebrate by spending that payment elsewhere — roll the whole amount, minimum plus whatever extra you were adding, straight into the new top of the list.
That's the whole method. It's a spreadsheet and some discipline.
The part where I read every line
I want to say something here that's related but not directly avalanche-shaped, because it matters for step 5 — the "whatever extra you've got" part.
You cannot throw extra money at debt if you don't actually know what's leaving your account every month. I found a $9.99 subscription on my own statement a while back that I'd been paying for two years. Two years. For something I think I used twice. It wasn't hidden, it wasn't a scam, it was just sitting there in plain text on a statement I was glancing at instead of actually reading.
So before you get excited about the avalanche math, go find your "extra." Read every line on every statement once, this month, slow. You're looking for the stuff you signed up for during a free trial and forgot about. That's real money you can redirect toward the top of your debt list instead of a subscription you don't remember starting. I'm not proud of the two years, but I bring it up because if it happened to me it's happening to some of you too.
Where the avalanche actually falls apart
Here's my honest opinion on this one, and I've said versions of it before: the avalanche is mathematically the best answer and I still usually don't tell people to use it.
Why. Because paying down the highest-rate card first often means you're grinding on your biggest, ugliest balance for months before anything disappears off your list. And when nothing's disappearing, it doesn't feel like progress, even though it is progress, even though the math is working exactly as designed underneath. People — me included, this is from personal experience — quit methods that don't feel like they're moving.
I'm not telling you not to use the avalanche. If you're the type of person who's motivated by knowing you're doing the objectively correct thing regardless of how it feels month to month, this is your method, full stop, it'll save you real money in interest. I just want you to know yourself a little before you commit to it. Next lesson I'll show you the other version and you can decide which one you'll actually stick with, because the best method is the one you don't quit in month three.
Before next time: pull your statements, build that four-column list — creditor, balance, rate, minimum — and while you're in there, actually read every line once. See what you find.