Stripe or Klarna for Your Checkout?
Stripe is a flexible developer platform with global card infrastructure, while Klarna excels at Swedish conversion with invoice and installment payments. They fill partly different roles, and in Swedish e-commerce it's common to combine them – Stripe for cards and global reach, Klarna for local payment methods.
Pitting Stripe against Klarna sounds like a choice between two competitors, but that’s partly a misleading picture. They fill different roles in Swedish e-commerce: Stripe is the developer platform with global card infrastructure, Klarna is the force behind Swedish conversion. Understanding the difference helps you decide whether you need one, the other, or – as is often the case – both.
Stripe: the flexible platform
Stripe is built for developers. Its strength is a well-crafted API that makes it possible to build almost any payment flow – one-time purchases, subscriptions, marketplaces with payouts to multiple parties. The documentation is solid and the possibilities extensive, which makes Stripe a safe choice when payments are a central part of the product and need to be customizable.
The reach is global. Stripe handles card payments worldwide and supports many currencies, which makes it strong for anyone selling outside Sweden or planning to. Cards are a universal payment method, and Stripe makes it easy to accept them wherever the customer is.
Klarna: the Swedish conversion powerhouse
Klarna attacks the problem from the other direction. Instead of being a flexible building platform, Klarna is a conversion engine for the Swedish market. Swedish consumers are used to invoice and installment payments, recognize Klarna’s checkout, and trust it. Being able to buy now and pay later lowers the barrier to completing a purchase.
The effect is especially noticeable at higher order values, where the option to split the payment can be what determines whether the customer dares to buy. For a store selling to Swedish consumers, Klarna is often less a technical question and more a question of how many customers actually make it all the way through checkout.
Fees by transaction type
The pricing can’t be summed up in a single number, since the models differ. Stripe charges a fee per card payment. Klarna’s fees vary by payment method – an invoice or an installment plan is priced differently than a direct payment.
That means the cheapest solution depends on how your customers pay. A store with many small card purchases and a store with few large installment payments can land on completely different conclusions. So don’t compare list prices against each other – calculate based on your actual mix of payment methods and order values. That’s what determines what each option actually costs you in practice.
Why they’re often combined
Because they fill different roles, the most common solution in Swedish e-commerce is to use both. Stripe handles cards and provides global reach; Klarna offers the local payment methods Swedish customers expect. The customer meets a checkout where they can choose, and the store captures both the shopper who wants to pay by card and the one who wants an invoice.
Technically that means two integrations to build and maintain instead of one. It’s a real cost, both in development and ongoing maintenance, and it should be weighed against what the extra reach and conversion are worth. For many stores the answer is that the combination pays for itself, but that depends on volume and customer base.
A reasonable order to think in:
- Map your customers. Do you sell mostly to Swedish consumers, or broadly and internationally?
- Decide on the base. Cards via Stripe are a safe foundation almost always; Klarna adds Swedish conversion.
- Weigh the cost. Weigh the extra integration against the conversion and reach it provides.
How to land on the right choice
If you need flexibility, subscriptions, or international reach, Stripe is a natural foundation. If you sell to Swedish consumers who expect invoice and installment options, Klarna should be in the checkout. Often it’s not a choice between them but a question of what order you introduce them in.
At Weapp we build payment integrations with both Stripe and Klarna and help you choose the right combination for your business. Check out our services or get in touch and we’ll walk through your setup.
Frequently asked questions
Are Stripe and Klarna competitors or complements?
Somewhat both. They overlap in that both can accept payments, but they have different strengths: Stripe on flexible card infrastructure and global reach, Klarna on Swedish payment methods like invoice and installments. In practice they're often combined, so the store offers both cards via Stripe and Klarna's options at checkout.
Which one has the lowest fees?
It depends on the transaction type. Stripe charges a fee per card payment, while Klarna's fees vary by payment method – invoice and installments are priced differently than a direct card payment. Which one ends up cheapest is decided by your mix of payment methods and order values, so compare based on how your customers actually pay.
Why does Klarna boost conversion in Sweden?
Because Swedish customers are used to invoice and installment payments and recognize Klarna's checkout. Being able to buy now and pay later lowers the barrier to completing a purchase, especially at higher order values. The recognition and local payment methods mean more shoppers make it all the way through checkout than with card payment alone.
When is Stripe enough on its own?
When card payment covers your customers' needs and you want a flexible platform with global reach – for example with international sales or subscriptions. If you sell mainly to Swedish consumers who expect invoice and installment options, Stripe alone can leave conversion on the table.
What does a combination look like technically?
Both are often integrated into checkout so the customer can choose a payment method, with Stripe handling cards and Klarna handling its own options. That means two integrations to build and maintain instead of one, a cost to weigh against the conversion and reach the combination provides. Many Swedish stores do exactly that.