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E-Commerce · head to head

Klarna vs Square

Klarna logo

Klarna

E-Commerce

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

From
On request
Rated
-
Full reviewWebsite
Square logo

Square

E-Commerce

Powering the economy

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Square has a free tier, so it costs nothing to try first.
  • Each has a real cost: 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.; Square plus plan pricing not specified in documentation
  • They diverge on capability: Klarna covers Pay in 4, Square covers Payment processing.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Klarna and Square actually diverge.

Attributes where Klarna and Square differ
AttributeKlarnaSquare
Starting priceOn requestFree
Pricing modelquotefreemium
Free tierNoYes
PlatformsWeb, iOS, AndroidPOS (Mobile app), Web
FoundedUnknown2009

Identical on both: user rating (Not yet rated), category (E-Commerce).

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 Klarna

  • Pay in 4
  • Pay in 30 days
  • Longer-term financing
  • Klarna app placement
  • Klarna Checkout
  • In-store payments
  • On-site messaging
  • Merchant portal

Only in Square

  • Payment processing
  • Point of sale
  • Invoicing
  • Payroll
  • Banking
  • QuickBooks
  • WooCommerce
  • Wix

What people use each for

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

Klarna

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

Square

  • Accept payments with all-in-one POS applicationnot Klarna
  • Online ordering and basic website creationnot Klarna
  • Invoicing and appointment bookingnot Klarna
  • Staff scheduling and loyalty programmesnot Klarna

Where each one falls short

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

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.

Square

  • Plus plan pricing not specified in documentation
  • Processing fees differ by tier but exact rates not detailed
  • Free plan pricing mentioned but specific features for Plus unclear
  • Text marketing charged at 3¢ per message after first 500 included

Pricing, plan by plan

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

Square

Free
  • FreeFree
    • Accept payments with all-in-one POS app
    • Online site builder (ordering profiles, basic websites, online stores, booking sites)
    • Item library and inventory tracking
  • Plus$null/mo
    • All Free plan features
    • Advanced POS features for food, retail, and appointments
    • Lower processing fees on card transactions

Which should you pick?

Choose Klarna if

  • You need pay in 4.
  • You work on Web, iOS, Android.
  • You also want pay in 30 days.
Klarna review

Choose Square if

  • You need payment processing.
  • You want to start without paying.
  • You work on POS (Mobile app), Web.
  • You also want point of sale.
Square review

Questions people ask

Is Klarna or Square better?
Neither clearly leads. Klarna starts at On request and Square at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Klarna or Square?
Square has a free tier; the other does not. Paid plans start at On request for Klarna and Free for Square.
Does Klarna or Square run on more platforms?
Klarna runs on Web, iOS, Android. Square runs on POS (Mobile app), Web.
Can I use Square for free?
Yes. Square has a free tier, so you can try it without paying. Klarna starts at On request.
What is Klarna best used for?
Klarna is most often used for a fashion or furniture retailer with average order values high enough that a 3% fee uplift is repaid by a larger basket, a merchant selling to younger shoppers who have low credit card penetration and would otherwise abandon at checkout, a european retailer wanting a single hosted checkout that handles instalments, invoice and card in one flow, a brand that wants distribution inside klarna's shopping app as an acquisition channel rather than only a payment option. Of those, a fashion or furniture retailer with average order values high enough that a 3% fee uplift is repaid by a larger basket and a merchant selling to younger shoppers who have low credit card penetration and would otherwise abandon at checkout are not what Square is typically brought in for.
What can Klarna do that Square cannot?
Klarna covers Pay in 4, Pay in 30 days, Longer-term financing, Klarna app placement. Square covers Payment processing, Point of sale, Invoicing, Payroll.

Answered from the vendors’ own pages

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.

Square: Does Square offer a free plan?

Yes, Square's free plan includes an all-in-one POS app, online site builder, item library and inventory tracking, invoicing, appointment scheduling, staff calendars, and checking and savings account access. No subscription fees are charged.

Source
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.

Square: What does Square Plus add compared to the free plan?

Square Plus adds advanced POS features for food and retail, lower processing fees on card transactions, custom loyalty programs, unlimited email marketing campaigns, text messaging, and staff scheduling and attendance tracking.

Source
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.

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