Ever been tempted by the little box at checkout that says “Pay in 3” or “Buy now, pay later”? It feels harmless, instant gratification, no upfront cost.
But behind the cheerful branding, BNPL is still credit, with all the risks that come with borrowing.
BNPL use is booming in the UK. Millions of shoppers now rely on Klarna, Clearpay, or Laybuy for everything from trainers to groceries.
Yet many don’t realise the hidden fees, credit risks, or lack of protection until it’s too late.
This guide explains how BNPL really works, the dangers to watch out for, what regulation is coming, and safer ways to borrow (or avoid borrowing altogether).
What exactly is BNPL and how does it work?
At checkout, BNPL lets you split or defer payments, sometimes interest-free if you repay on time.
But the small print matters:
- Klarna offers some 0% instalment options, but also charges up to 18.9% APR for certain products (you’ll only find this in the terms).
- Clearpay charges £6 for every late payment, buried at the bottom of its “How it works” page.
- Refunds can take longer than debit or credit card refunds.
- Most BNPL firms are not FCA-regulated yet, so you don’t get the same protections you’d have with a credit card.
Why does BNPL feel like a lifestyle choice?
BNPL is deliberately marketed with fun branding, smooth apps, and easy checkout integration. Borrowing is made to feel normal, even playful.
That’s part of the danger: when the “pain of paying” is separated from the purchase, people tend to spend more.
Even disciplined shoppers can suffer from lifestyle creep when debt feels invisible.
BNPL apps
There is nothing wrong in principle with buy now pay later if you know what you’re getting into, how much you’ll be charged, who you will be charged by and who regulates the app.
Most of the current apps are not regulated by the Financial Conduct Authority (FCA) so you won’t have the Section 75 protections a credit card offers.
The two BNPL apps I mentioned, Klarna and Clearpay offer free borrowing for some services. That’s not true for all apps.
Klarna does charge 18.9% APR for some services though, which you don’t find out until you dig into the terms and conditions.
There are also late fees, which you must dig around the website to find.
For example, Clearpay charges £6 for every missed payment, which you don’t find out until you get to the footer of their ‘How it works’ page.
So far, so fair, but it would be better for apps to be clearer about any interest charged or fees levied.
What are the downsides of BNPL?
BNPL has several serious drawbacks:
- Lack of regulation: Until FCA rules kick in, you don’t have Ombudsman support or the same protections you get with credit cards.
- Credit score impact: Paying on time rarely boosts your score, but missing payments can damage it. Defaults and late payment markers stay on your file and can reduce access to future credit.
- Late fees and charges: £6 here, £12 there, it adds up quickly.
- Aggressive collections: Some users report strict debt collection practices, with limited consumer recourse.
How will BNPL change under UK regulation?
From summer 2026, BNPL products will be regulated by the Financial Conduct Authority (FCA) as “Deferred Payment Credit.”
This will mean:
- Mandatory affordability checks even on small purchases
- Clearer disclosure of fees, interest, and repayment terms
- Faster refunds and fairer debt collection
- Access to the Financial Ombudsman for disputes
- Signposting to free debt-advice services
This is welcome news, but until then, shoppers are largely on their own.
How can you use BNPL responsibly?
There’s nothing wrong with using BNPL if you:
- Understand the terms and fees upfront
- Only borrow what you can comfortably repay on time
- Use it occasionally for essentials and not as a way of life
- Remember that it’s credit, not free money
If you’re unsure, a simple rule applies: if you can’t pay cash, ask whether you should buy it at all.
Safer alternatives to BNPL
If you need flexibility but want more protection:
- Use a credit card: Offers Section 75 protection for purchases over £100 if paid in full each month. See our guide on how to properly use 0% credit cards for maximum savings.
- Save up first: Set aside money each month in a sinking fund for planned purchases.
- Budget smarter: Learn how to free up money in your monthly spending, see how to create a household budget that works for you.
- Focus on habits: If impulse spending is the issue, check out how to change your spending habits without changing your life.
Your BNPL safety checklist
- ✅ Only use BNPL for planned purchases, never impulse buys
- ✅ Set reminders for every repayment date
- ✅ Avoid stacking multiple BNPL accounts at once
- ✅ Monitor your credit score regularly
- ✅ Know your rights—and what protections you don’t yet have
If you can’t buy with cash don’t buy
I have to say this as Saving Superstar is a money saving website…
If you cannot afford to pay for what you’re buying with cash, can you afford to buy it at all?
The simple answer is no, aside from using credit cards if you want to receive Section 75 protection or don’t have cash to hand.
If you need to borrow to buy, the smart choice would be not to buy at all.
That’s it, I have said my piece. If you want to use a buy now pay later app, make sure you know exactly what you’re getting into!
Check for interest charges, late payment charges and any charges or conditions related to using the app.
Buy now, pay later FAQs
1. Does BNPL affect my credit score?
Yes. While approvals often involve only soft checks, missed payments can be reported to credit reference agencies and damage your score.
2. When will BNPL be regulated in the UK?
The FCA will regulate BNPL as Deferred Payment Credit from summer 2026. This will introduce affordability checks, clearer terms, and ombudsman support.
3. Can BNPL help me manage cash flow?
It can, if you only borrow what you know you can repay. But it should never replace budgeting or saving, as the risks of fees and missed payments are high.
4. What should I do if I can’t repay a BNPL instalment?
Contact the provider immediately as some offer hardship support. Don’t ignore the debt, as late fees add up quickly and defaults hurt your credit file. Free advice is available from Citizens Advice, MoneyHelper, and StepChange.
5. What’s a safer alternative to BNPL?
A credit card used responsibly (and paid off in full) gives you protection that BNPL doesn’t. Or better still, save into a pot for future purchases. See our guide to frugal living hacks for practical saving ideas.
