Best 0% Balance Transfer Credit Cards UK: How to Choose and Use One

The best 0% balance transfer card is the one that clears your debt at the lowest total cost, not always the longest deal. In September 2026 the longest UK offers run to 36 months for a fee of about 3% to 3.5%, while shorter deals charge between 0% and 1.5%. Pick the length you need, then the lowest fee. This guide compares the current offers and shows how to use one without losing the 0% rate.

How does a balance transfer work in the UK?

A balance transfer moves debt from one credit card to a new card that charges 0% interest on it for a set period. You apply for the new card, give the new provider the details of the card you want to pay off, and it settles that balance for you. The debt then sits on the new card at 0%, plus a one-off transfer fee that is added to the balance.

You still have to make at least the minimum payment every month. When the 0% period ends, anything left is charged at the card's standard rate, which is 24.9% representative APR on most of the cards below. Offers are usually advertised as "up to" a number of months: the provider decides your period after checking your credit file.

Which UK balance transfer cards are available now?

These are the main offers on each provider's website in mid-September 2026. Terms change often, so check the provider's page before you apply.

"Up to" matters. Barclaycard says at least 7 out of 10 customers accepted for its 36-month card last month received the full period; applicants who do not qualify may be offered 32 or 18 months at 31.9% APR instead. Tesco describes its 36-month period as guaranteed. You can see our listing for the Barclaycard Platinum Balance Transfer card and the Santander All in One card, or browse every UK card we compare.

Is the longest 0% balance transfer always the best?

No. A longer deal is only worth its higher fee if you need the extra months. Work out what you can afford to repay each month, then choose the cheapest card whose 0% period covers that plan. Using a £4,000 balance as the example:

• About £115 a month: you need roughly 36 months, so a 36-month card fits. HSBC's 3.09% fee costs £123.60.
• About £185 a month: Barclaycard's card of up to 22 months works, and its 1.49% fee costs £59.60, less than half as much.
• About £270 a month: Tesco's 15-month card at 0.75% costs £30.
• About £365 a month: NatWest's card of up to 11 months charges no fee at all.

Each monthly figure is the balance plus the fee divided by the number of months. If you can pay £185 a month, choosing a 36-month card anyway costs you an extra £64 in fees for time you will not use.

How much can a balance transfer save you?

For most people carrying card debt, hundreds of pounds. Here is a worked example with stated assumptions: you owe £3,000 on a card at 24.9% APR, treated as an annual rate compounded monthly (about 1.87% a month), and you make no new purchases. You move it to a 22-month card with a 1.49% fee, which adds £44.70. Paying £138.40 a month clears the £3,044.70 in exactly 22 months.

If you left the debt where it was and paid the same £138.40 a month, you would pay about £830 in interest over those 22 months and still owe about £786. Clearing it would take 29 months and cost about £883 in interest in total. After the fee, the transfer saves roughly £838.

How do you do a balance transfer step by step?

The process takes a few minutes online, but the details decide whether you keep the 0% rate.

1. Check your eligibility first. Use the provider's eligibility checker, which uses a soft search that lenders cannot see. It often shows the period you are likely to get. Our guide to UK credit scores explains what providers look at.
2. Choose by total cost using the monthly figure you can afford, as above.
3. Apply and request the transfer straight away. Most offers need the transfer within 60 or 90 days of opening the account; later transfers usually get the standard rate.
4. Stay within the limit. NatWest, Santander, Tesco and Virgin Money let you transfer up to 95% of your credit limit, and the fee must also fit within the limit.
5. Keep paying the old card until the transfer shows as complete and the old balance reads zero.
6. Set up a direct debit for a fixed amount that clears the balance before the 0% ends, not just the minimum.
7. Avoid spending on the new card. Several of these cards give 0% on purchases for only three months, and the FCA's rules require providers to put your payments towards the balance with the highest interest rate first.

What can make you lose the 0% rate?

Breaking the card's conditions can end the offer early, and each provider sets its own rules. Barclaycard says that going over your credit limit during a promotion means you lose the promotional rate from the date you went over. Virgin Money says you lose its 0% rate if you miss a minimum monthly payment, and pay the standard rate from the start of that statement period. Tesco Bank takes a different line: since July 2024 it no longer removes promotional rates for a late payment, although a £12 late fee still applies.

A late payment also goes on your credit file whatever the provider does with the rate, and that makes your next balance transfer harder to get. Set the direct debit before the first statement arrives.

Can you transfer a balance between cards from the same bank?

No. Providers only accept transfers from cards issued by other banking groups. Barclaycard excludes any other Barclaycard or its partner-branded cards; HSBC excludes cards from the HSBC Group, including first direct and M&S Bank; Santander excludes Santander and cahoot cards; NatWest excludes NatWest Group cards; Virgin Money excludes Nationwide and Virgin Money cards; and Tesco Bank does not allow transfers between two Tesco Bank cards. If your debt is with one of these groups, apply to a provider outside it.

What happens when the 0% period ends?

Any remaining balance starts to attract interest at the card's standard rate. Some people move the rest to another 0% card, but that means another fee and another credit check, and approval is not guaranteed.

If you only make minimum payments for a long time, FCA rules on persistent debt apply. Where you have paid more in interest, fees and charges than towards the debt itself over 18 months, your provider must contact you and prompt you to pay more. After 36 months, it must offer you a way to repay the balance in a reasonable period. For a wider view of the choice between deals, read our guide to 0% purchase cards versus balance transfer cards, or see how to compare UK credit cards.