0% Purchase Credit Cards Explained: How They Work and What to Watch
A 0% purchase credit card lets you spend on the card without being charged interest for a set number of months. Used well, it's a way to spread the cost of something you need, like a new boiler, furniture or a laptop, without paying extra for the privilege.
Used carelessly, it can turn into expensive debt once the offer ends. Here's how to get it right.
Key takeaways
- New spending is charged 0% interest for an introductory period, set out in the card's terms.
- You must still make at least the minimum payment every month.
- Any balance left when the 0% ends is charged at the card's standard rate.
- Missing a payment can end the 0% deal early.
- Purchases over £100 and up to £30,000 also get Section 75 protection.
This is general information, not financial advice.
How does a 0% purchase card work?
When you're accepted, the card gives you a promotional period, usually measured in months from the date the account is opened, during which purchases are charged 0% interest. You can spend up to your credit limit and repay at your own pace, as long as you make at least the minimum payment each month.
When the period ends, any purchase balance still on the card starts being charged at the standard purchase rate. That rate is usually high, so the goal is to clear the balance before then.
Illustrative example: You spend £1,200 on a card with a 12-month 0% purchase period. Paying £100 a month clears it just as the deal ends, and you pay no interest. If you only make the minimum, a large part of the £1,200 may still be there when interest starts.
Who are 0% purchase cards good for?
They can work well if you:
- have a planned, one-off cost you'd like to spread
- can budget a fixed monthly amount to clear it within the 0% period
- want Section 75 protection on a larger purchase.
They're less suitable if you:
- are already struggling to repay existing debts
- tend to keep spending without a plan
- might need cash, as cash withdrawals are rarely included in 0% offers.
What to check before you apply
Length of the 0% period
Cards advertise "up to" a certain number of months. Depending on your credit history, you might be offered a shorter period, so check your offer before you accept.
The standard rate afterwards
Look at the purchase rate and APR that apply once the deal ends. See APR vs Representative APR: What Credit Card Rates Really Mean.
Whether balance transfers are included
Some cards offer 0% on both purchases and balance transfers (often called "dual" cards). Others offer 0% on purchases only. If you also want to move existing debt, compare on Balance transfer credit cards.
Fees
Most 0% purchase cards don't charge an annual fee, but check for:
- foreign transaction fees if you'll spend abroad
- cash withdrawal fees and interest
- late payment fees.
Your likely credit limit
You won't know your limit until you're accepted. If you're planning a specific purchase, don't commit to buying until you know the card can cover it.
How to use a 0% purchase card without paying interest
- Work out your monthly target. Divide the amount you plan to spend by the number of 0% months. Leave a month or two of buffer.
- Set up a direct debit. Cover at least the minimum, so you never miss a payment, and ideally your full monthly target.
- Don't keep adding to it. Every new purchase pushes the finish line further away.
- Avoid cash withdrawals. They usually come with a fee and interest from day one.
- Set a reminder. Two months before the deal ends, check what's left and make a plan.
- Stay within your limit. Going over can trigger fees and may end the promotional rate.
What happens when the 0% ends?
Any remaining balance moves to the standard purchase rate. At that point, you could:
- clear the rest as quickly as possible
- consider a balance transfer card to move the remaining balance to a new 0% deal, though there's no guarantee you'll be accepted and a fee usually applies (see How Do Balance Transfers Work? A Plain-English UK Guide)
- talk to your provider if you're finding it hard to repay.
Minimum payments and persistent debt
Paying only the minimum keeps your account in good standing, but on its own it may not clear the balance before the 0% ends. FCA rules also mean that if, over 18 months, you pay more in interest, fees and charges than you repay of the balance itself, your provider must contact you and offer ways to repay faster. It's a sign the card is costing more than it should.
0% purchase card vs other ways to spread a cost
| Option | How it works | Things to watch |
|---|---|---|
| 0% purchase credit card | Interest-free spending for a set period | Standard rate after the deal; minimum payments required |
| Retailer interest-free finance | Fixed-term loan for one purchase | Check if it's truly 0% and what happens if you're late |
| Buy Now Pay Later | Split a purchase into instalments | Late fees; increasingly regulated and may appear on your credit file |
| Personal loan | Fixed amount, fixed repayments | Interest from day one, but a clear end date |
| Saving up first | No borrowing | Takes longer, but costs nothing |
Compare 0% purchase cards
On 0% purchase credit cards every card is shown in the same layout: 0% length, the rate afterwards and any fees, so you can compare like with like. Check your chances first on eligibility checkers explained.
Frequently asked questions
Is a 0% purchase card really interest-free?
Yes, for purchases during the promotional period, as long as you keep to the terms (such as paying on time and staying within your limit). Interest applies to anything left once the period ends.
Do I have to pay anything during the 0% period?
Yes. You must make at least the minimum monthly payment shown on your statement.
Does the 0% apply to cash withdrawals?
Usually not. Cash withdrawals typically carry a fee and are charged interest from the day you take the money out.
Can I use a 0% purchase card abroad?
You can, but many cards charge a foreign transaction fee on spending in other currencies. See Using a Credit Card Abroad: Fees, Exchange Rates and How to Save.
What happens if I miss a payment?
You'll usually be charged a late fee, it may be recorded on your credit file, and the provider may withdraw the 0% rate.
Does a 0% card affect my credit score?
Applying leaves a hard search on your file. Using the card responsibly, paying on time and keeping your balance well below the limit can help build a positive history.
This is general information, not financial advice. Always check the card's summary box for current rates and terms.
