Comparison Guide Β· 2026-07-03
Cashback Credit Card vs 0% Purchase Card UK 2026
A cashback card pays you a small percentage of every pound you spend, but only makes sense if you clear the balance in full every month β otherwise interest wipes out the reward. A 0% purchase card charges no interest on new spending for a promotional period (commonly 12β24 months), letting you spread the cost of a big purchase interest-free, but usually pays no cashback and reverts to a high APR after the offer ends.
At a Glance
| Feature | Cashback Card | 0% Purchase Card |
|---|---|---|
| Typical reward | 0.5%β1.5% cashback on spending (higher on some premium cards, capped) | None β the benefit is 0% interest, not cashback |
| Promotional period | N/A β ongoing reward while the account is open | 0% on purchases for a fixed period, typically 12β24 months |
| Requires full repayment? | Yes β carrying a balance charges interest (often 20%+) that erases the cashback | No β minimum payments are fine during the 0% window, but balance must clear before the offer ends |
| Best use case | Everyday spending you already pay off in full each month | A specific one-off purchase (furniture, wedding, appliance) spread over time |
| Annual fee | Sometimes β premium cashback cards can charge Β£25βΒ£300/year | Usually free |
| Risk after the offer | N/A β no promotional cliff-edge | APR jumps to the standard rate (often 20β30%) on any remaining balance |
When Cashback Card Wins
- You always clear your balance in full each month and want free money on spending you would do anyway
- You have a good enough credit score to qualify for premium cashback cards
- You do not need to finance a specific large purchase
When 0% Purchase Card Wins
- You need to spread the cost of a specific purchase over 12β24 months without interest
- You can commit to a clear repayment plan that clears the balance before the 0% ends
- Your spending is irregular or large one-off items rather than everyday transactions
Frequently Asked Questions
Can I get a cashback card with 0% on purchases too?
A small number of cards combine a short 0% introductory period (e.g. 3β6 months) with ongoing cashback afterwards, but these are rarer and the 0% window is much shorter than a dedicated 0% purchase card. If your priority is a long interest-free period, a dedicated 0% purchase card will beat a hybrid card's introductory offer.
What happens if I do not clear a 0% purchase card before the offer ends?
Any remaining balance starts accruing interest at the card's standard purchase APR, typically 20β30%, from the day after the promotional period ends. Set a reminder a month before the offer expires and either clear the balance or move it to a new 0% card via a balance transfer if eligible.
Is cashback from a credit card taxable in the UK?
No β cashback and rewards from credit and debit card spending are treated by HMRC as a discount on your own spending, not income, so it is not taxable and does not need to be declared on a Self Assessment return.
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Do 0% purchase cards affect my credit score?
Applying for any credit card triggers a hard credit search, which can cause a small, temporary dip in your score. Using the card responsibly β staying well within your limit and making at least the minimum payment β generally helps your credit score over time by demonstrating good credit management.
Which type of card is better for building a credit history?
Both work equally well if used responsibly, since credit reference agencies look at how you manage the account (on-time payments, utilisation) rather than whether it offers cashback or a 0% period. A cashback card used for everyday spending and cleared monthly is arguably simpler to manage consistently over the long term.
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Disclaimer: This comparison is general information, not personal financial advice. Figures reflect the 2026/27 UK tax year and can change. Always check current HMRC/gov.uk guidance or speak to a regulated adviser before making a decision.