Credit Card Payoff Calculator UK
See how long your card will take to clear, and how much interest it costs — including the trap that keeps a £3,000 balance running for nearly 30 years.
A credit card payoff calculator shows two things the card company would rather you didn’t dwell on: how long your balance will take to clear, and how much interest you’ll pay getting there. The single most expensive habit is paying only the minimum. Because the minimum is mostly interest plus a sliver of the balance, a £3,000 debt at 24.9% APR paid at the minimum takes almost 29 years to clear and costs around £5,998 in interest — more than the original debt. Switch to a fixed £150 a month and the same balance is gone in 27 months, costing just £916 in interest. That single change saves over £5,000. The other powerful lever is a 0% balance transfer: moving £3,000 to a 0% card for a small fee (often around 3%) can cut the interest to almost nothing while you clear it. This calculator shows your payoff time and total interest, compares fixed payments, and models a balance transfer. To weigh up a personal loan instead, see the Loan Calculator; to build a buffer that keeps you off the card, the Emergency Fund Calculator.
Credit card balance
Monthly payment
Promo or balance transfer
One-off payments and comparison
Affordability
Payoff result
Estimated payoff time
Calculating…
Calculating…
Total paid
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Total interest
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Monthly payment used
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Payment for target
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Interest saved vs minimum
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Debt payment ratio
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Credit card payoff — quick lookup
The left table shows how a £3,000 balance at 24.9% APR clears under different fixed monthly payments — the contrast with the minimum is stark. The right shows how the APR affects a fixed £150-a-month payoff. The headline sits at the top of the left table: paying the minimum keeps you in debt for decades; a modest fixed payment clears it in a couple of years.
| Monthly payment | Time | Interest |
|---|---|---|
| Minimum only | 28.8 yrs | £5,998 |
| £100 | 4.0 yrs | £1,744 |
| £150 | 2.3 yrs | £916 |
| £200 | 1.6 yrs | £631 |
| £300 | 1.0 yr | £398 |
| APR | Time | Interest |
|---|---|---|
| 19.9% | 25 mo | £675 |
| 24.9% | 27 mo | £916 |
| 29.9% | 29 mo | £1,204 |
| 34.9% | 31 mo | £1,560 |
Left: the same £3,000 balance at 24.9% APR. Paying only the minimum (modelled as 1% of the balance plus interest, with a £5 floor) takes nearly 29 years and costs more in interest than the debt itself; a fixed £150 a month clears it in 27 months. Right: at a fixed £150 a month, a higher APR adds months and hundreds in interest. Figures are illustrative; your card’s minimum and APR will differ.
How credit card payoff works
A credit card behaves very differently from a loan, and the difference is exactly what makes it so expensive if you’re not careful. Understanding the minimum payment — and why a fixed payment beats it so heavily — is the key to clearing a balance cheaply.
Why the minimum payment is a trap
A UK card’s minimum payment is typically the interest charged that month plus around 1% of the balance (subject to a small floor like £5). The problem is that as your balance falls, so does the minimum — so the amount clearing the actual debt shrinks every month, stretching the payoff over decades. On a £3,000 balance at 24.9%, the minimum starts at roughly £60 and most of it is interest. Paying only the minimum, you’d clear it in nearly 29 years and pay around £5,998 in interest — more than you borrowed. The minimum is designed to keep you paying, not to clear the debt.
Why a fixed payment changes everything
The fix is simple: pay a fixed amount every month instead of the shrinking minimum. Because your payment stays the same while the balance falls, more of each payment goes to clearing the debt, so it compounds in your favour. On that £3,000 balance, a fixed £150 a month clears it in 27 months for £916 of interest — versus 29 years and £5,998 on the minimum. That’s the same card, the same APR, just a different payment habit, saving over £5,000 and nearly three decades. Even a small fixed payment beats the minimum dramatically.
The 0% balance transfer lever
If you have good credit, a 0% balance transfer card can be transformative. You move the balance to a new card charging no interest for a promotional period (often 12–30 months), usually for a one-off fee of around 2–3% of the balance. On £3,000, a 3% fee is £90 — and clearing the balance over a 24-month 0% period costs about £129 a month and £90 total, against nearly £6,000 of interest staying put. The catch: you must clear it (or move it again) before the 0% period ends, when the rate jumps. Used with discipline, it’s the single biggest saving available.
Worked examples
Four scenarios: the minimum payment trap, the fixed-payment fix, a 0% balance transfer, and the effect of the APR.
Scenario 1 · The minimum payment trap
£3,000 that takes 29 years
Time to clear: 28.8 years
Total interest: £5,998 (more than the debt)
Paying only the minimum is the most expensive way to handle a card. Because the minimum falls as the balance does, the debt barely shrinks — a £3,000 balance at 24.9% takes almost 29 years to clear and costs £5,998 in interest, double the amount you actually spent. UK statements now show a warning about this, but the numbers still surprise people. If you take one thing from this calculator: never pay only the minimum if you can possibly pay more.
Scenario 2 · The fixed-payment fix
£150 a month clears it in 27 months
Time to clear: 27 months
Total interest: £916 · saving vs minimum: £5,083
Switching from the minimum to a fixed £150 a month transforms the outcome on the identical debt. The balance now falls steadily, clearing in just over two years for £916 of interest — saving £5,083 and over 26 years compared with the minimum. The trick is keeping the payment fixed rather than letting it drop with the balance. Setting a standing order for a fixed amount, rather than paying the minimum each month, is the simplest high-impact money move there is.
Scenario 3 · The 0% balance transfer
A £90 fee instead of £5,998 interest
Cleared over 24 months: £128.75/month
Total cost £3,090 · saving vs minimum: £5,908
For someone with good enough credit to qualify, a 0% balance transfer is the most powerful option. Moving the £3,000 to a 0% card costs a £90 transfer fee, then you pay no interest for the promotional period. Clearing it over 24 months means about £129 a month and £90 in total cost — against nearly £6,000 of interest if it stayed put. The discipline required: clear it before the 0% period ends, and don’t spend on the new card. Do that, and you save almost the entire interest bill.
Scenario 4 · The APR effect
A higher rate, hundreds more interest
At 19.9%: 25 months, £675 interest
At 34.9%: 31 months, £1,560 interest
Even with a disciplined fixed payment, the APR still matters. The same £3,000 paid at £150 a month costs £675 in interest at 19.9% but £1,560 at 34.9% — and takes six months longer. This is why, if you can’t clear a card quickly, getting the balance onto a lower rate (through a 0% transfer or a cheaper card) is worth pursuing. The combination of a fixed payment and a lower rate clears debt fastest and cheapest of all.
Clearing a card faster — four moves
Most payoff calculators just show the months. But the real value is knowing which lever to pull — and the gap between the worst and best approach to the same debt is thousands of pounds. Work through these four:
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1
Are you paying more than the minimum?
This is the biggest lever by far. The minimum keeps a £3,000 balance running for nearly 29 years and £5,998 of interest; a fixed £150 a month clears it in 27 months for £916. Set a standing order for a fixed amount and never let your payment shrink with the balance.
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2
Could you do a 0% balance transfer?
With good credit, moving the balance to a 0% card for a small fee (around 2–3%) can cut the interest to almost nothing. On £3,000, a £90 fee replaces nearly £6,000 of interest. The rule: clear it before the 0% period ends, and don’t spend on the card.
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3
Do you have multiple cards to prioritise?
With several balances, two methods work: the avalanche (clear the highest APR first to minimise interest) saves the most money; the snowball (clear the smallest balance first) builds momentum. Pay minimums on the rest, throw everything spare at the target card, then move to the next.
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4
Would a personal loan be cheaper?
If you can’t get a 0% transfer, a personal loan at a lower APR than your card can cut the cost and give a fixed end date. Compare the loan’s total interest against the card’s, and only do it if you’ll stop using the card. The Loan Calculator shows the cost.
£3,000 at 24.9% — same debt, four approaches
Total interest (or cost) to clear:
The same £3,000 debt can cost £5,998 or £90 to clear, depending entirely on how you approach it — a difference of nearly £6,000 for an identical balance. That’s why “how do I pay off my credit card?” is one of the highest-value questions in personal finance. For most people the order is clear: never pay only the minimum; if your credit allows, move the balance to a 0% card and clear it within the promotional period; with several cards, target the highest APR first; and if 0% isn’t available, weigh up a cheaper personal loan. Above all, stop adding to the card while you clear it. The calculator shows your payoff time and interest under each approach.
A word on persistent debt rules
UK card providers must follow persistent debt rules: if, over 18 months, you’ve paid more in interest and charges than you’ve repaid of the balance, they have to contact you and eventually help you clear it faster — for example by proposing higher payments or freezing interest. This is a safety net, not a plan: it kicks in only after you’ve already paid a lot of interest. The point of paying more than the minimum is to never reach it. If you’re struggling, free debt help from StepChange or Citizens Advice is available and impartial.
Two scenarios that change the picture
What if…
You added just £50 to the minimum?
What if…
Your 0% period ended before you cleared it?
Key credit card terms explained
Credit cards come with their own vocabulary — minimum payments, APR, balance transfers, persistent debt. The ten terms below cut through it so you can read a statement and a transfer deal clearly.
- Minimum payment
- The smallest amount you must pay each month — usually the interest plus around 1% of the balance, with a small floor. Paying only this keeps a balance running for decades.
- APR
- Annual Percentage Rate — the yearly cost of borrowing on the card, including interest and certain fees. UK card APRs are often 20–35%, far higher than loans or mortgages.
- Balance transfer
- Moving a balance to another card, often at 0% for a promotional period, usually for a fee of around 2–3%. A powerful way to stop interest while you clear the debt.
- Transfer fee
- The one-off charge for a balance transfer, typically 2–3% of the amount moved. On £3,000, a 3% fee is £90 — usually tiny next to the interest it saves.
- Promotional period
- The window during which a transfer charges 0%, often 12–30 months. Any balance left when it ends reverts to the standard APR, so clear it before then.
- Avalanche method
- A multi-card strategy: clear the highest-APR balance first while paying minimums on the rest. Mathematically the cheapest, as it kills the most expensive interest first.
- Snowball method
- Clear the smallest balance first for quick wins and momentum, then roll its payment into the next. Slightly more expensive than avalanche, but motivating.
- Persistent debt
- When, over 18 months, you’ve paid more in interest and charges than off the balance. UK rules require your provider to help you clear it faster once this happens.
- Representative APR
- The advertised card rate offered to at least 51% of accepted applicants. Your actual APR depends on your credit profile and may be higher, so don’t assume the headline.
- Money transfer
- Moving cash from a card to your bank account, sometimes at 0% for a period (for a fee). Useful for clearing an overdraft, but distinct from a balance transfer between cards.
Five mistakes people make with credit card debt
Credit card debt is where small habits cost the most. These five errors, drawn from the recurring r/UKPersonalFinance and r/DebtUK threads, are the expensive ones.
Paying only the minimum
The single most costly habit. Because the minimum shrinks as the balance falls, it keeps a £3,000 debt running for nearly 29 years and £5,998 of interest — more than the debt itself. Pay a fixed amount instead, and the same balance clears in 27 months for £916.
Cost: £5,083 and 26 extra years Fix: set a fixed monthly payment by standing orderSpending on a 0% balance transfer card
A 0% transfer is for clearing debt, not new spending. Purchases on a transfer card often aren’t covered by the 0% deal and can attract interest immediately, with payments sometimes clearing the cheaper balance first. Use the card only to clear the transferred amount.
Cost: surprise interest, undone savings Fix: never spend on a balance transfer cardMissing the end of the 0% period
A balance left when the promotional period ends reverts to the full APR — often around 25% — wiping out much of the benefit. People forget the date or under-pay. Set your fixed payment to clear the whole balance within the 0% window, and diarise the end date.
Cost: ~25% APR restarts on the balance Fix: clear it within the 0% period, or transfer againClearing savings to pay off, leaving no buffer
Wiping out all savings to clear a card can make sense — card interest usually beats savings interest — but leaving zero emergency buffer means the next surprise goes straight back on the card. Keep a small starter buffer so you don’t re-borrow at 25%.
Cost: straight back into debt on the next shock Fix: keep a small buffer while clearing the cardIgnoring debt help when struggling
People often delay seeking help out of embarrassment, while interest mounts. Free, impartial debt advice from StepChange or Citizens Advice can negotiate payment plans, freeze interest, or stop charges. It’s confidential and doesn’t cost anything — reaching out early prevents a manageable debt becoming a crisis.
Cost: a spiral that help could have stopped Fix: contact StepChange or Citizens Advice earlyFrequently asked questions
How long will it take to pay off my credit card?
It depends entirely on how much you pay each month. Paying only the minimum, a £3,000 balance at 24.9% APR takes nearly 29 years to clear. Paying a fixed £150 a month, the same balance is gone in 27 months.
The key is paying a fixed amount rather than the minimum, which shrinks as the balance falls and drags the debt out for decades. Enter your balance, APR, and monthly payment to see your own payoff time and total interest.
Why is paying the minimum so expensive?
Because the minimum payment is mostly interest. A UK minimum is typically the month’s interest plus around 1% of the balance, so very little goes toward clearing the actual debt — and as the balance falls, the minimum falls too, slowing things further.
On a £3,000 balance at 24.9%, paying only the minimum costs around £5,998 in interest over nearly 29 years — more than the original debt. It’s structured to keep you paying, not to clear the balance, which is why a fixed payment is so much cheaper.
Should I do a 0% balance transfer?
If you can qualify, it’s often the cheapest way to clear card debt. You move the balance to a card charging 0% interest for a promotional period, usually for a one-off fee of around 2–3%. On £3,000, a 3% fee is £90 — against nearly £6,000 of interest if the debt stayed put.
The conditions: clear the balance (or transfer it again) before the 0% period ends, when the rate jumps to the full APR, and don’t spend on the new card, as purchases may not be covered by the 0% deal. Used with discipline, it’s the single biggest saving available.
What’s the difference between the avalanche and snowball methods?
Both are strategies for clearing multiple cards. The avalanche method targets the highest-APR balance first while paying minimums on the rest — mathematically the cheapest, as it kills the most expensive interest first.
The snowball method clears the smallest balance first for a quick win and motivation, then rolls that payment into the next. It costs slightly more in interest but can be easier to stick to. Either beats spreading spare cash thinly across all cards.
Is a personal loan better than a credit card?
It can be, if you can’t get a 0% transfer. A personal loan often has a lower APR than a credit card and a fixed end date, so the debt is guaranteed to clear and the cost is predictable. Compare the loan’s total interest against the card’s to see the saving.
The catch is discipline: a loan only helps if you stop using the card, rather than running the balance back up. The Loan Calculator shows what a loan would cost, so you can compare it directly with staying on the card.
Should I use savings to pay off my credit card?
Usually yes, mathematically — card interest of 20–35% almost always outweighs the interest you’d earn on savings, so clearing the card is the better return. But there’s an important caveat.
Don’t wipe out every penny: keep a small emergency buffer so the next unexpected cost doesn’t go straight back on the card at 25%. The sensible approach is to keep a starter buffer of around £1,000, then use the rest of your savings to clear expensive card debt.
What are the persistent debt rules?
UK card providers must monitor for persistent debt: if, over 18 months, you’ve paid more in interest and charges than you’ve repaid of the balance, they have to contact you and help you clear it faster — for example by suggesting higher payments or, eventually, reducing or freezing interest.
It’s a safety net, not a plan, because it only kicks in after you’ve already paid a lot of interest. The aim of paying more than the minimum is to never reach this point in the first place.
What if I can’t afford to pay off my card?
If you’re struggling to keep up, get free, impartial debt advice as early as possible — it’s confidential and doesn’t cost anything. Charities like StepChange and Citizens Advice can help you build a budget, negotiate with lenders, and sometimes freeze interest or charges.
Reaching out early, before you miss payments, gives you the most options and prevents a manageable debt from becoming a crisis. There’s no shame in asking for help — these services exist precisely for this.
Related calculators
Clearing a card connects to other borrowing, the buffer that keeps you off it, and the income behind it all. These calculators handle each piece.
Methodology & sources
How the maths works
The calculator models a credit card balance month by month. Each month it adds interest (the balance multiplied by the APR divided by 12) and subtracts your payment, repeating until the balance reaches zero. For the minimum payment, it uses a common UK structure: the greater of a percentage of the balance plus that month’s interest, or a small cash floor (around £5) — so the minimum falls as the balance falls, which is what stretches the payoff over decades. For a fixed payment, it keeps the payment constant, so a steadily larger share clears the balance and the debt is repaid far faster. For a balance transfer, it applies the transfer fee up front and charges 0% interest for the promotional period, showing the monthly amount needed to clear the balance within it. Total interest is the sum of the monthly interest charged across the payoff.
These are illustrative estimates to show how repayment behaves, not a quote or a statement of your account. Real cards vary in how they set the minimum payment, how interest is calculated and compounded, and how payments are allocated between balances at different rates, and your APR depends on your credit profile and may differ from any advertised representative rate. Promotional 0% periods, fees, and terms differ between cards and change over time. The aim is to show how much paying more than the minimum, or using a 0% transfer, can save — not to recommend a specific card, product, or course of action.
Assumptions and conventions used
- Monthly model: interest = balance × (APR ÷ 12)
- Minimum payment: ~1% of balance + interest, floor ~£5
- Fixed payment: constant each month until cleared
- Balance transfer: fee applied up front, 0% for the period
- Total interest = sum of monthly interest charged
- Avalanche = highest APR first · snowball = smallest balance first
- Persistent debt rules apply after 18 months of high interest
- APR and minimums vary by card and credit profile
- Figures shown are illustrative, not a quote