Money

Why paying the credit card minimum keeps you stuck, in numbers

Published 22 July 2026

Every credit card statement has a box telling you the minimum you owe this month. It looks like a manageable number, and paying it feels like keeping up. Run the actual maths and a different picture shows up: on a typical balance, most of that payment never touches the debt at all.

This isn't a lecture about willpower. It's just arithmetic that card providers are not obliged to spell out for you, so it's worth doing once yourself.

What the minimum payment actually covers

Take a fairly ordinary case: a £5,000 balance on a card charging 23% APR, which is close to the UK average for purchases in 2026. A common minimum payment structure is 2% of the balance or £25, whichever is higher.

On £5,000, 2% works out at £100, so that's the minimum due. Here's the part that surprises people: at 23% APR, the monthly interest rate is roughly 1.92%, so interest alone on that £5,000 comes to about £96 for the month. Out of a £100 payment, only around £4 actually reduces what you owe. The rest simply covers the interest that built up while you were making the payment.

Starting balance£5,000
Minimum payment (2%)£100
Interest charged that month (23% APR)−£96
Actual reduction in balance~£4

Why it barely moves, year after year

It gets worse the following month, in a quiet way. Because the minimum is set as a percentage of the balance, and the balance has barely fallen, next month's required payment is also barely lower. The schedule is designed to soften as the debt shrinks, which sounds sensible until you realise it means the pace of repayment slows down right when you'd want it to speed up.

Run that same £5,000 at 23% APR forward on minimum payments only, and it takes somewhere in the region of two decades to clear, with total interest paid along the way coming to more than the original balance itself. The debt effectively doubles in cost before it's gone. None of this is a one-off unlucky scenario. It's what the minimum payment structure does by design on any card carrying a typical UK rate.

Watch out for one thing specifically: if your spending on the card continues even a little each month, on top of the minimum payment, the balance can stay flat or even creep up, because new interest and new spending outpace the tiny bit of principal being cleared. A card that "isn't going up" can still be quietly failing to go down.

What changes if you pay a fixed amount instead

Swap the minimum-only approach for a fixed £200 a month on that same £5,000 balance, and the picture flips. Instead of decades, it clears in around two and a half years, and the total interest bill drops from roughly £5,900 to somewhere near £1,100. That's a difference of about £4,800, achieved purely by paying a steady amount rather than letting the required minimum dictate the pace.

You don't need £200 to make a dent, either. Even an extra £50 a month above whatever the statement asks for meaningfully cuts both the time and the total interest, because every additional pound goes straight at the balance rather than being absorbed into a payment that was already mostly interest.

Credit Card Payoff Calculator

Put your own balance, APR, and minimum payment terms in, then compare that against a fixed monthly payment to see the exact payoff time and interest saved.

Open the tool

A few practical moves

If you're carrying a balance at anything close to 23%, it's worth a five-minute phone call to your provider asking for a lower rate, particularly if you've had the card a while and paid on time. It doesn't always work, but it costs nothing to ask.

If you have more than one card, put any spare money towards whichever carries the highest APR, and pay only the minimum on the rest, rather than spreading extra payments evenly across all of them. And if you're disciplined enough to actually clear the balance within the promotional window, a 0% balance transfer card can remove the interest problem altogether, though most charge an upfront fee of a few percent, so check that against what you'd otherwise pay in interest before moving anything.

A personal loan is also worth a look if the balance is large, since typical rates of 8 to 12% for a decent-sized loan can be well under half of what a card charges, and a loan comes with a fixed end date rather than a minimum payment that keeps sliding.

Related tools

Frequently asked questions

Most UK card providers set the minimum at whichever is higher: around 1 to 3 percent of the outstanding balance, or a flat amount such as £25. Check your own terms, because both the percentage and the floor amount vary by provider and sometimes by card within the same provider.

Because the minimum is a moving target set as a percentage of whatever is left. As the balance falls, the required payment falls with it, so the amount actually going towards the debt keeps shrinking too. It is a repayment schedule that deliberately gets gentler over time, which is exactly why it stretches out so long.

Almost always, yes, if the alternative is leaving spare cash sitting in a current account earning nothing. The main exception is if you have no emergency buffer at all, in which case building a small cash cushion first can make more sense than throwing every spare pound at the card.

A balance transfer can be a good move if you clear the debt, or most of it, within the promotional period, since you avoid interest almost entirely. Weigh that against the transfer fee, usually a few percent of the balance, and be honest with yourself about whether the debt will actually be gone before the 0% period ends and the rate jumps back up.

This guide is general information, not financial advice. Rates and terms vary between providers, so check your own statement before deciding how much to pay.