Minimum Payment Less Than Interest? The Debt That Never Ends

5 min read · October 28, 2026

If your monthly payment is smaller than your monthly interest, your debt gets bigger every month, even if you never spend again. To make progress, you must pay more than the break-even payment: balance × yearly rate ÷ 12.

What is the “never ends” trap?

Each month, interest is added to what you owe. Your payment pays that interest first. Only what is left over makes the debt smaller.

So if your payment is less than the interest, nothing is left over. The gap is added to your debt. Next month, you pay interest on a bigger balance.

The US consumer regulator, the CFPB, explains it the same way: interest is added to what you owe each month, so the balance can keep growing.

(For why paying only the minimum is slow even when it does beat the interest, see why the minimum payment keeps you in debt.)

What is the break-even payment?

Break-even payment is the monthly payment that exactly matches your monthly interest, so your balance stays the same.

Here is the formula in words: break-even payment equals your balance times your yearly rate, divided by 12.

Pay less than this: the debt grows.
Pay exactly this: the debt stays the same, forever.
Pay more than this: the debt shrinks.

This is a close estimate. Some lenders add interest daily, and fees can push it higher.

What does this look like with real numbers?

Say you owe $5,000 at 24% a year. You pay $80 a month and add no new spending.

Step 1. Monthly rate: 24 ÷ 12 = 2% a month.

Step 2. Break-even payment: 5,000 × 0.02 = $100.

Step 3. Your payment is $80. That is $20 below break-even.

Step 4. Month 1: interest is $100. You pay $80. You now owe $5,020.

After 12 months of paying $80, you owe about $5,268. After 5 years, about $7,281. You paid $4,800 over those 5 years, and you owe $2,281 more than when you started.

Nada's Never ends screen for a $5,000 card: an $80 minimum against $100 of interest a month, so the debt grows. — Nada flags this debt as "Never ends" (sample data): $80 a month is less than the $100 of monthly interest, so the balance grows.

What is the smallest payment that makes real progress?

Anything above $100 shrinks the debt. But “just above” is still a trap. Look at the same $5,000 at 2% a month:

Monthly payment	Time to clear	Total interest
$80	Never (debt grows)	Keeps growing
$100	Never (debt stays at $5,000)	$100 every month
$101	234 months (about 19.5 years)	$18,539
$110	122 months (about 10 years)	$8,320
$125	82 months (about 7 years)	$5,159
$150	56 months (under 5 years)	$3,322

Look at the jump from $101 to $150. It is $49 more a month. It saves about 15 years and over $15,000 of interest.

Why? At $101, only $1 of your first payment cuts the balance. At $150, $50 does. The more that goes to the balance, the less interest you pay next month.

A simple rule: aim to pay well above break-even, not just above it. Even an extra $25 makes a large difference here.

How do I know if I’m in this trap?

Check your latest statement. You need three numbers: balance, yearly rate and your usual payment.

Then work it out:

Balance × yearly rate ÷ 12 = your monthly interest (your break-even).
Take this away from your payment.
If the answer is zero or less, your debt is not shrinking.

A second clue: your balance is the same or higher than it was a year ago, even though you paid every month.

In the UK, this pattern has a name. MoneyHelper explains “persistent debt” as paying more in interest, fees and charges than you repay over 18 months. Wherever you live, it is a useful warning sign.

What can I do if my payment is below break-even?

Start with what you can control.

Stop adding new spending to that debt, so the balance stops rising from both sides.
Raise the payment above break-even, even by a little, then keep raising it.
Put any extra money on the debt with the highest rate first. See snowball vs avalanche.
Talk to your lender if you can’t pay more. MoneyHelper advises not to ignore letters about this and to speak to your provider about options.

If you are struggling to cover the payment at all, free debt advice services can help you look at the whole picture.

Do this today (10 minutes)

Find your balance, yearly rate and payment for each debt.

Work out break-even for each one: balance × yearly rate ÷ 12.

For any debt where your payment is below or near break-even, set a new payment at least $25 above it.

Nada does this math for you. It shows your monthly interest on every debt and whether each payment is making progress. Get Nada

(Want to see why the monthly rate matters so much? Read monthly rate vs yearly rate.)

FAQ

Why is my balance not going down when I pay every month? Your payment is probably close to, or below, your monthly interest. Interest is added first, and only what is left of your payment cuts the balance. Work out balance × yearly rate ÷ 12. If your payment is not clearly above that number, the balance will barely move, or will grow.

What is the break-even payment? It is the payment that exactly matches your monthly interest. At that amount the balance stays the same forever. Find it with balance × yearly rate ÷ 12. On $5,000 at 24% a year it is $100. Anything less and the debt grows. Anything more starts to shrink it.

How much above break-even should I pay? As much as you can afford. Just above break-even is not enough to make real progress. In the example, $101 a month takes about 19.5 years and costs $18,539 of interest. $150 a month takes under five years and costs $3,322. Each extra dollar goes straight to the balance.

What is persistent debt? Persistent debt is a name used in the UK for paying more in interest, fees and charges than you repay on a card over 18 months. MoneyHelper explains it. Wherever you live, it is a useful warning sign that your payments are only just covering the cost of the debt.

Sources

Read in October 2026.

Written by the Nada team. Reviewed October 2026.

This is general information, not personal advice.

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