TL;DR
UK credit cards include 0% purchase, 0% balance transfer, reward, cashback, credit-builder, and premium. Each serves a different use case. This guide compares them and the FCA CONC rules that apply.
Key facts
- 0% purchase cards: interest-free spending for 6-24 months.
- 0% balance transfer: move debt with typical 1-3% transfer fee.
- Cashback cards: 0.25%-5% back on spending.
- Reward cards: points convertible to flights, vouchers, statement credit.
- Credit-builder cards: small limits, higher APR, designed to build history.
- Premium cards: annual fee GBP 195-575, includes lounge access, insurance.
- FCA CONC 6 governs post-contract conduct including persistent debt rules.
- Persistent debt (CONC 6.7.27R): 18-month review trigger.
UK credit cards have evolved into specialised categories serving different uses. The same lender often offers 5-10 different card types; the right choice depends on the borrower's spending pattern, debt position, and reward preferences. This guide covers the main categories, the typical commercial terms, and the FCA CONC rules that apply to all of them.
The framework is the Consumer Credit Act 1974 plus the FCA's CONC sourcebook, which governs the conduct of authorised credit providers. CONC 6 covers post-contract behaviour including the persistent debt rules introduced in 2018.
0% purchase cards: interest-free spending
A 0% purchase card charges no interest on new purchases for a promotional period (typically 6 to 24 months). After the promotional period the standard purchase APR applies (typically 19.9% to 29.9% representative). The card is useful for spreading a large planned purchase over the interest-free term.
Minimum monthly payments still apply (typically 1-3% of the balance or GBP 5, whichever is higher). Paying only the minimum during the 0% period does not produce interest charges but extends the repayment timeline. The intent is to clear the balance before the 0% period ends.
Worked example: a household needs to buy a GBP 2,400 appliance. They take a 0% purchase card with 18-month interest-free period and pay GBP 134 a month, clearing the balance by month 18. Net cost GBP 2,400 (no interest). Alternative routes: store finance at 19.9% APR would cost around GBP 400 of interest over the same period; outright payment from savings would lose 4-5% of interest opportunity (GBP 80-120 in opportunity cost).
Edge case: a forgotten balance at the end of the 0% period attracts standard APR retroactively from the date of the original purchase in some cards (so-called 'deferred interest' cards). UK 0% purchase cards typically use 'true 0%' (interest only from the post-promotional date forward); the deferred-interest model is more common in the US. Reading the card terms confirms the structure.
0% balance transfer cards: moving debt
A 0% balance transfer card allows the borrower to move existing card debt to the new card at 0% interest for a promotional period (typically 12 to 30 months). A transfer fee of typically 1% to 3% of the transferred amount applies up-front.
The borrower uses the 0% period to pay down the transferred balance without interest accruing. Where the balance is cleared during the 0% period, the only cost is the transfer fee. Where the balance remains at the end, standard APR applies to the residual.
Worked example: a borrower has GBP 4,000 of credit card debt at 22.9% APR, paying GBP 200 a month. Standard interest cost GBP 460 a year. Transferring to a 28-month 0% card with 3% fee: fee GBP 120 (3% of GBP 4,000). At GBP 145 a month they clear the balance in 28 months. Total cost GBP 120 transfer fee versus around GBP 1,000 of interest on the original card. Saving GBP 880.
Practical action: 0% balance transfer works only if the borrower clears or substantially reduces the balance during the 0% period. Cycling balances between successive 0% cards (so-called 'rate tarting') works in theory but can lead to over-extension. Discipline of paying down faster than the minimum is essential.
Cashback and reward cards
Cashback cards pay back a percentage of spending as statement credit or cash to a linked account. Typical rates: 0.25% to 1% on all spending, sometimes 2-5% on specific categories (groceries, travel, fuel). Some cards have annual fees; some are free but with lower cashback rates.
Reward cards provide points that convert to airline miles, hotel nights, vouchers, or statement credit. Conversion ratios vary; the effective value per pound spent is typically 0.5% to 2% depending on the redemption choice. Premium reward cards (American Express Platinum, BA Premium Plus) offer higher rates with annual fees of GBP 195 to GBP 575.
Cashback and reward cards make sense for borrowers who pay off the balance in full each month. Where balance is carried, the standard APR (typically 22-30% on these cards) far exceeds any rewards value. The cards function as everyday spending vehicles for organised payers, not as debt vehicles.
Worked example: a household spending GBP 30,000 a year through a 1% cashback card receives GBP 300 a year. The same household using a 0.5% cashback card receives GBP 150. The 1% card may have a GBP 25 annual fee, netting GBP 275 versus GBP 150 - the higher-rate card wins on this spending level despite the fee.
Credit-builder cards
Credit-builder cards are designed for borrowers with thin or adverse credit files. Limits are small (GBP 250 to GBP 1,500), APRs are high (29.9% to 49.9% representative), and the application criteria are more lenient than for standard cards. The card builds credit history through reported on-time payments and managed utilisation.
Common providers: Capital One, Vanquis, Aqua, Tesco Foundation. The cards report monthly to the three CRAs, with on-time payments and low utilisation building positive history. After 6-12 months of clean use, the borrower can typically apply for a standard card with better terms.
Using a credit-builder card responsibly: charge a small amount each month (a recurring subscription works), pay off in full each month by direct debit, keep utilisation below 30% of the small limit. Six to twelve months of this builds visible positive history at the CRAs.
Edge case: high-APR cards are dangerous if balances are carried. A GBP 500 balance at 39.9% APR costs around GBP 200 a year in interest if not cleared. The card's value is in building credit history, not in providing access to long-term credit. Pay off in full each month or use a different product for spending above the immediate clear-each-month capacity.
Premium cards and annual fees
Premium cards charge annual fees in exchange for benefits: lounge access, travel insurance, concierge services, higher reward rates, status with airlines or hotels. Fees range GBP 195 (American Express Gold) to GBP 575 (American Express Platinum, BA Premium Plus). The benefits are valuable for some users and useless for others.
Worked example: a frequent business traveller using lounges at GBP 30 a visit four times a year saves GBP 120 on lounge fees. Combined with annual travel insurance (saving GBP 80-150), miles-earning at higher rates, and concierge services, the GBP 195 annual fee can be net-positive. A non-travelling household would find the same fee a net cost.
Premium cards typically have purchase APRs in the 22-29% range and balance transfer APRs in the 26-29% range. They are not suitable as long-term debt vehicles; the premium benefits are for active users paying off in full each month.
FCA CONC rules apply equally to premium cards: persistent debt review at 18 months, payment difficulty support under CONC 7, and the same complaint routes through the issuer and Financial Ombudsman.
Money transfer cards and other niche variants
Money transfer cards allow the cardholder to transfer a balance from the card to their current account. The transferred amount appears as a card balance with a 0% promotional rate for typically 6-18 months, less a transfer fee of 3-5%. The functionality is similar to a personal loan with cash flexibility, useful for paying off non-card debt or for emergency cash flow.
Specialist cards address specific needs. Student credit cards have lower limits (GBP 200-1,000) and lenient eligibility. Travel cards waive non-sterling transaction fees and ATM withdrawal fees abroad. Charity cards donate a small percentage of spend to a chosen charity. Affinity cards offer rewards toward a specific brand or programme.
Premium charge cards (American Express Platinum, Diners Club) require payment in full each month. They have no preset spending limit (subject to ongoing eligibility) and offer rich travel, lounge, and concierge benefits. Annual fees are high (GBP 295-575); the benefits make sense for travellers and frequent business users.
Practical action: matching the card type to actual use pattern matters more than picking the headline-attractive offer. A traveller benefits from travel cards regardless of cashback rates; an everyday spender benefits from cashback regardless of foreign fees. Aligning the card with usage produces the best net value.
Disclaimer
This article provides general information based on rules and figures published by UK government and regulator sources as of May 2026. It is not personal financial, legal, immigration or tax advice. Rules, fees and figures change and individual circumstances vary. Readers should check primary sources or consult a qualified, regulated adviser before acting on any information here.
Frequently asked questions
How long does a 0% credit card last?
Promotional periods typically run 6 to 30 months. 0% on purchases is usually shorter (6-24 months); 0% on balance transfers can be longer (15-30 months). After the promotional period the standard APR (typically 19-29%) applies to any remaining balance. The card terms specify the exact length; the borrower should plan to clear the balance before the promotional period ends to avoid interest charges.
What's the catch with balance transfer cards?
Three points: the transfer fee (typically 1-3% of the transferred amount, charged up-front), the requirement to make minimum monthly payments throughout the 0% period to keep the promotional rate, and the standard APR that applies to any residual balance after the promotional period. For a borrower who clears the balance during the 0% period the fee is the only cost. For a borrower who does not, interest stacks back at the standard APR.
Are cashback cards worth it?
For borrowers paying off in full each month, yes for moderate-to-high spending households. A 1% cashback on GBP 30,000 a year of spending returns GBP 300. Cards with annual fees need higher spending to break even. Borrowers carrying balances pay APR (22-30%) on the balance, vastly exceeding any cashback. The cards work as everyday vehicles for organised payers, not as debt vehicles.
Will a credit-builder card help me get a mortgage?
Yes if used responsibly for 12-24 months. The CRAs see on-time payments and low utilisation, building positive history. Mortgage underwriters look for sustained good behaviour rather than a specific card type. After 12-24 months of clean credit-builder card use, a borrower with no prior adverse history typically qualifies for mainstream mortgage products. Heavy balance carrying on a credit-builder card (especially above 50% utilisation) can hurt rather than help.
What is persistent debt?
FCA CONC 6.7.27R defines persistent debt on a credit card as a state where the borrower has paid more in interest, fees and charges than in principal over an 18-month period. The card issuer must review the account and contact the borrower to encourage faster repayment. After 36 months in persistent debt the issuer must offer support including reduced rate or repayment plan, and ultimately may suspend the card. The rule was introduced in 2018 to address chronic minimum-payment patterns.