Financial literacy · a life skill
Deliberate Debt Snowball Planning
see the price, then choose
Smallest balance first and highest rate first are both sound plans. One buys early wins with a little extra interest; the other saves the interest and asks you to wait for the first account to close. The deliberate version of the skill is to put a number on that trade before you pick, and then to check once a month that you're still on the plan you picked.
- Moderate
- High impact
- Learn it: 2-4 weeks
- One review a month
Shaded: the months when smallest first has one more debt closed. Interest: £1,138 smallest first, £1,010 highest rate first. Both finish in month 22; the second debt goes in month 7 instead of 14.
The method
Price it, pick it, check it.
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Run both orders
List the debts once, then work them out two ways: smallest balance first, and highest interest rate first. Same minimums, same spare money.
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Put a price on the quick wins
The difference in total interest is what the early wins cost. Write it down as a number, next to the month each order closes its second debt.
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Choose, then stop choosing
If you've dropped a payoff plan before, the quick wins may be worth their price. If the gap is large and you're steady, take the savings. Either way, commit for three months.
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Review once a month
On the same day each month, add up what you owe on everything and write it beside what the plan said.
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Rerun only for a reason
A new rate, a new debt or a change in income: run both orders again. One bad month is not a reason to switch.
Run both, price the difference, choose, review monthly, rerun only when something changes.
Example: Sam runs both orders on four debts. Highest rate first saves £128 over 22 months; smallest first closes a second debt in month 7 instead of month 14. Sam has quit two plans before, so picks smallest first and writes £128 down as the price. At the end of month 3 the plan says £7,643 owed, and that's the number Sam checks against.
The order planner
Run both orders on your debts.
1 · Your debts
No debts yet. Add the first one below, or show an example.
2 · The spare each month
New to this? Start with the smallest-first basics.
3 · The two orders
Add a debt to compare
| Measure | Smallest first | Highest rate |
|---|
4 · The monthly review
Log what you owe against the plan.
Start a plan above, and this is where each month's total goes.
Your debts have changed since the plan started. Start the plan again to redraw it.
Add up every balance on the same day each month, after the payments have gone out.
Everything here is kept only in this browser. Nothing is sent anywhere. The months are an estimate: interest is added monthly at the yearly rate ÷ 12, and minimums are assumed to stay the same.
The research behind it
A closed account feels like more progress, and it keeps people paying.
Keri Kettle, Remi Trudel, Simon Blanchard and Gerald Häubl studied people with several credit card balances and how they split each month's repayments, from putting everything on one account to spreading it evenly across all of them. In a field study and three experiments, concentrating the repayments made people more motivated to get out of debt, and the effect was strongest when the money went to the smallest accounts.
The reason, they found, is how people judge progress: by how much of an account's starting balance is gone. One card paid off reads as more progress than four cards each a little lower, even when the same money has gone out.
The figure shows it with this page's example. Spreading the spare evenly is also the one plan the numbers don't back: here it pays £1,217 in interest, more than either order, and the first account doesn't close until month 8.
The idea
Why it works.
The argument between the two orders usually happens without numbers. Put them in, and the choice gets small: a sum of money against a few months of waiting. Most people can make that call in a minute once they can see it.
The monthly review is what keeps the choice made. A plan with a number for every month tells you early when you've drifted, while the fix is still small, and a month on plan is its own small win.
When it goes wrong
Habits that help.
- You keep switching orders. Every switch resets the target. Rerun the comparison only when a rate, a debt or your income changes.
- The gap is huge. If one debt charges far more than the rest, the price of the quick wins can run into hundreds. Take the savings, or clear only the tiniest debt first and then switch.
- A month comes in behind. Find the reason before you change anything: a new charge, a missed extra payment, a rate that went up.
- The review slips. Tie it to a date you already keep, like payday or the day the biggest statement arrives.
Go deeper
Keep going.
- Simple Debt Snowball Planning
- Deliberate Debt Snowball Planning
- Advanced Debt Snowball Planning
Resources
Practise this in HourLife.
In Finances: Debt payoff order. Log your money once a month, set a monthly budget and track spending by category, and keep every subscription and its charges in one list.
