0% Credit Cards UK 2026: Best Interest-Free Deals and How to Use Them Safely

A 0% credit card is a credit card that charges no interest for a fixed promotional period. There are two main types: 0% purchase cards, which charge no interest on new spending during the promotional period, and 0% balance transfer cards, which allow you to move existing credit card debt onto the new card at no interest for the promotional period. Some cards offer both features.

How 0% Purchase Cards Work

With a 0% purchase card, every purchase you make during the promotional period accrues no interest. You must make at least the minimum monthly payment - typically 1% to 2% of the outstanding balance or a minimum fixed amount, whichever is greater. As long as minimum payments are made, the full balance can be carried until the end of the 0% period without interest charges.

At the end of the promotional period, the remaining balance automatically reverts to the card's standard purchase APR. This is typically between 20% and 30% for mainstream credit cards. If you have not cleared the balance by this point, interest begins accruing on the full outstanding amount at the standard rate.

How 0% Balance Transfer Cards Work

A balance transfer moves an existing credit card balance to a new card. The new card charges no interest on the transferred amount for the promotional period. A balance transfer fee is typically charged at the point of transfer - commonly 2% to 3.5% of the amount moved.

For example: transferring £3,000 with a 3% balance transfer fee costs £90 upfront. If your existing card is charging 25% APR, the annual interest cost on £3,000 would be around £750 - so the fee is significantly lower than the interest saved over a 12-month period.

You cannot transfer a balance between cards issued by the same banking group. Check that the card you are applying to is not from the same issuer as the card you want to transfer from.

FCA Rules on 0% Credit Cards

The FCA's Consumer Credit sourcebook (CONC) sets out the rules lenders must follow when marketing and providing 0% credit cards:

• The representative APR must be clearly stated in all advertising - this is the standard rate, not the 0% promotional rate
• Lenders must conduct affordability assessments before approving a credit card application
• Lenders must send persistent debt warnings if a customer is making only minimum payments and is not reducing their balance meaningfully
• From 2018, lenders must offer customers in persistent credit card debt options to repay their balance more quickly
• Minimum payment amounts must be clearly stated and cannot be set so low that customers make no meaningful repayment progress

The Debt Trap - What to Watch For

The risk with 0% cards is complacency. Because no interest accrues, it is easy to defer repayment - but the standard APR kicks in immediately when the promotional period ends. Common pitfalls:

• Missing a minimum payment - this can immediately cancel the 0% rate on many cards, reverting the full balance to the standard APR from that point
• Making cash withdrawals on a 0% purchase card - cash advances typically attract interest from the day of withdrawal at a higher rate regardless of any 0% promotion
• Forgetting the end date - set a calendar reminder 8 weeks before the 0% period ends to either pay off the balance in full or arrange a new balance transfer
• Continuing to spend after the 0% purchase period ends - new purchases after the promotion ends attract the standard APR immediately

Checking and Comparing 0% Cards

All FCA-authorised credit card providers must be registered on the FCA register at register.fca.org.uk. When comparing 0% cards:

• Compare the length of the 0% period - longer is better if you need more time to repay
• For balance transfers, compare the transfer fee as a percentage - lower fee cards may have shorter 0% periods
• Check the standard APR you revert to after the promotion - this matters if you cannot clear the balance in time
• Check for annual fees - most mainstream 0% cards have no annual fee but some premium cards do

How do 0% credit cards work in the UK?

A 0% credit card charges no interest on purchases or transferred balances for a fixed promotional period, typically 12 to 30 months. You must make at least the minimum monthly payment throughout. At the end of the 0% period, the remaining balance reverts to the standard APR - typically 20% to 30%.

What happens if I miss a payment on a 0% card?

Missing a minimum payment can immediately cancel the 0% promotional rate on many cards, reverting the full balance to the standard APR from that point. Always set up a direct debit for at least the minimum monthly payment to avoid this.

What is a balance transfer fee?

A balance transfer fee is a one-off charge when you move debt from one credit card to another. It is typically 2% to 3.5% of the amount transferred and is added to your balance on the new card. Some cards offer 0% transfer fees on shorter promotional periods.

Can I use a 0% card for cash withdrawals?

No - cash advances on credit cards typically attract interest from the day of withdrawal at a higher rate, regardless of any 0% promotional period on purchases or balance transfers. Avoid using 0% cards for cash.