Softwr

Personal Finance · head to head

Affirm vs Klarna

Affirm logo

Affirm

Personal Finance

Buy now pay later app offering short interest-free plans and longer plans that charge real APR interest

From
Free
Rated
-
Full reviewWebsite
Klarna logo

Klarna

E-Commerce

Buy now pay later and instalment checkout for online and in-store merchants

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Affirm has a free tier, so it costs nothing to try first.
  • Each has a real cost: Affirm longer instalment plans carry real interest, up to roughly 36 percent APR depending on the retailer, item and applicant, which is a genuine borrowing cost that the buy now pay later framing can obscure for shoppers who do not read the terms shown before accepting.; Klarna merchant fees for the short-term products run around 5.99% plus a fixed fee in the United States, roughly double a standard card rate, so unless Klarna measurably lifts average order value or conversion it is a straight margin loss.
  • They diverge on capability: Affirm covers Monthly instalment loans, Klarna covers Pay in 30 days.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Affirm and Klarna actually diverge.

Attributes where Affirm and Klarna differ
AttributeAffirmKlarna
Starting priceFreeOn request
Pricing modelFree for short Pay in 4 plans; longer plans carry a disclosed APR up to roughly 36 percent, merchant pays a transaction feequote
Free tierYesNo
PlatformsiOS, Android, WebWeb, iOS, Android
CategoryPersonal FinanceE-Commerce

Identical on both: user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Affirm

  • Monthly instalment loans
  • Soft credit check
  • No late fees
  • Affirm Card
  • Pre-purchase terms disclosure

Only in Klarna

  • Pay in 30 days
  • Longer-term financing
  • Klarna app placement
  • Klarna Checkout
  • In-store payments
  • On-site messaging
  • Merchant portal

Both cover

  • Pay in 4

What people use each for

The jobs each tool is most often brought in to do.

Affirm

  • A shopper financing a large purchase such as furniture or electronics who wants disclosed APR terms compared directly against a credit card before committingnot Klarna
  • Someone using the short Pay in 4 plan for a smaller purchase who intends to pay it off within six weeks with no interestnot Klarna
  • A borrower who has missed a payment before and specifically wants a lender that does not charge late feesnot Klarna
  • A retailer offering point-of-sale financing to reduce cart abandonment on higher-ticket items, in exchange for paying Affirm a transaction feenot Klarna

Klarna

  • A fashion or furniture retailer with average order values high enough that a 3% fee uplift is repaid by a larger basketnot Affirm
  • A merchant selling to younger shoppers who have low credit card penetration and would otherwise abandon at checkoutnot Affirm
  • A European retailer wanting a single hosted checkout that handles instalments, invoice and card in one flownot Affirm
  • A brand that wants distribution inside Klarna's shopping app as an acquisition channel rather than only a payment optionnot Affirm

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Affirm

  • Longer instalment plans carry real interest, up to roughly 36 percent APR depending on the retailer, item and applicant, which is a genuine borrowing cost that the buy now pay later framing can obscure for shoppers who do not read the terms shown before accepting.
  • Even with no late fees, Affirm reports many loans to credit bureaus, so a missed or late payment on a longer plan can affect a credit score in a way the marketing around interest-free short plans does not prepare shoppers for.
  • Approval and APR both vary by individual loan, so the same shopper can be offered interest-free terms on one purchase and a high APR on another, making the cost unpredictable until checkout.
  • Merchants pay a transaction fee to offer Affirm at checkout, a cost typically built into retail pricing, so shoppers who pay by other means still indirectly subsidise the option even if they never use it.
  • The Affirm Card blurs the line between buy now pay later and a general-purpose credit card, and using it for everyday spending on interest-bearing terms can compound borrowing cost in a way a single point-of-sale purchase would not.

Klarna

  • Merchant fees for the short-term products run around 5.99% plus a fixed fee in the United States, roughly double a standard card rate, so unless Klarna measurably lifts average order value or conversion it is a straight margin loss.
  • Rates are negotiated and unpublished, which means small merchants pay the standard rate while large ones negotiate down, and you cannot benchmark what you are being charged without going to market.
  • Returns and partial refunds are handled through Klarna's systems rather than your payment processor, so your finance team reconciles a second settlement flow and customer service handles a second dispute process.
  • Buy now pay later is being brought under consumer credit regulation in the UK, the EU and Australia, which is already changing affordability checks and disclosures; the checkout experience that converts today may be legally required to add friction.
  • Klarna owns the post-purchase relationship, sending payment reminders and marketing in its own name, so a shopper who has a poor collections experience associates it with your brand while you have no control over the messaging.

Pricing, plan by plan

Affirm

Free
  • Pay in 4Free
    • No interest if paid on time over six weeks
    • No late fees for a missed payment
    • Soft credit check at application
  • Monthly instalmentsFree
    • APR disclosed before the loan is accepted, up to roughly 36 percent depending on retailer and applicant
    • Terms from three to 36 months depending on purchase amount
    • Payment history can be reported to credit bureaus

Klarna

On request
  • Klarna for Business$undefined/year
    • Per-transaction percentage plus a fixed fee, negotiated by merchant
    • No published rate card; rates vary by market, product and volume
    • Short-term products priced materially above card interchange

Which should you pick?

Choose Affirm if

  • You need monthly instalment loans.
  • You want to start without paying.
  • You work on iOS, Android, Web.
  • You also want soft credit check.
Affirm review

Choose Klarna if

  • You need pay in 30 days.
  • You work on Web, iOS, Android.
  • You also want longer-term financing.
Klarna review

Questions people ask

Is Affirm or Klarna better?
Neither clearly leads. Affirm starts at Free and Klarna at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Affirm or Klarna?
Affirm has a free tier; the other does not. Paid plans start at Free for Affirm and On request for Klarna.
Does Affirm or Klarna run on more platforms?
Affirm runs on iOS, Android, Web. Klarna runs on Web, iOS, Android.
Can I use Affirm for free?
Yes. Affirm has a free tier, so you can try it without paying. Klarna starts at On request.
What is Affirm best used for?
Affirm is most often used for a shopper financing a large purchase such as furniture or electronics who wants disclosed apr terms compared directly against a credit card before committing, someone using the short pay in 4 plan for a smaller purchase who intends to pay it off within six weeks with no interest, a borrower who has missed a payment before and specifically wants a lender that does not charge late fees, a retailer offering point-of-sale financing to reduce cart abandonment on higher-ticket items, in exchange for paying affirm a transaction fee. Of those, a shopper financing a large purchase such as furniture or electronics who wants disclosed apr terms compared directly against a credit card before committing and someone using the short pay in 4 plan for a smaller purchase who intends to pay it off within six weeks with no interest are not what Klarna is typically brought in for.
What can Affirm do that Klarna cannot?
Affirm covers Monthly instalment loans, Soft credit check, No late fees, Affirm Card. Klarna covers Pay in 30 days, Longer-term financing, Klarna app placement, Klarna Checkout. Both handle Pay in 4.

Answered from the vendors’ own pages

Affirm: Does Affirm always charge interest?

No, short Pay in 4 plans over six weeks are typically interest-free if paid on time; longer instalment plans of three to 36 months can carry a disclosed APR up to roughly 36 percent.

Klarna: What does Klarna cost a merchant?

Klarna does not publish a rate card. In the United States most merchants pay around 5.99% plus $0.30 for short-term products, with longer-term financing nearer 3.29% plus $0.30, and large merchants negotiate lower.

Affirm: Does Affirm charge late fees?

No, Affirm does not charge late fees for a missed payment, unlike some buy now pay later competitors, but missed payments can still be reported to credit bureaus.

Klarna: Does the merchant carry the credit risk?

No. Klarna pays the merchant the full amount less fees and takes the risk of the shopper not paying.

Affirm: Will using Affirm affect my credit score?

The initial application uses a soft credit check that does not affect your score, but Affirm reports many resulting loans to credit bureaus, so payment history on the loan itself can affect your score.

Klarna: Can I use Klarna alongside my existing processor?

Yes. It is normally added as an additional payment method through Shopify, Adyen, Stripe or a direct integration rather than replacing your card acquirer.

Klarna: Is Klarna still independent?

Yes. It listed on the New York Stock Exchange in September 2025 and holds a Swedish banking licence.

Share

Related pages

More on Affirm

More on Klarna

Keep looking

Other head to heads