Is buy now, pay later like Klarna halal?

Installments are fine, interest is not

Islam has no problem with paying for something later or in parts. Buying on credit was common in the Prophet's ﷺ time. The problem is riba: paying back more than you borrowed because time has passed. The Prophet ﷺ cursed the one who takes interest, the one who pays it, the one who writes it down and the two witnesses (Sahih Muslim 1598).

So with Klarna, Afterpay, Clearpay, Affirm and similar services, the type of plan decides it:

• Pay in 3/4, interest-free: you pay the same total as the sticker price. Most scholars see this as acceptable.
• Pay in 30 days: also usually interest-free and acceptable.
• Longer "financing" plans (6-36 months): these often charge interest (APR). If they do, avoid them.

The late fee question

Many interest-free plans charge a fee if you miss a payment. Scholars differ here. Some say a fixed, one-off admin fee isn't riba as long as you never actually pay it, so the plan is fine if you're disciplined. Others say agreeing to a penalty that grows with delay is agreeing to riba, so you should avoid these plans altogether. Islamic finance bodies generally allow late penalties only when the money goes to charity, not to the lender. If you use BNPL, the cautious path is to set up automatic payments so a late fee never happens. Delaying payment when you can afford it is wrong anyway: the Prophet ﷺ said a wealthy person's delay in paying debts is injustice (Sahih al-Bukhari 2400).

What to check in the terms

• Is there an APR or interest rate? If yes, don't use it.
• Is the total you pay exactly the shop price?
• What happens if you're late: a fixed fee, or a charge that grows?
• Does it run a credit check or roll over into a revolving credit line?

Credit cards raise very similar questions. See Can I still use my credit card after becoming Muslim?

Just because you can doesn't mean you should

BNPL makes it easy to buy things you don't need with money you don't have yet. Spreading many small plans across different apps can quickly turn into debt stress. Islam encourages moderation and living within your means, especially during big sales. See Can I shop on Black Friday as a Muslim?