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Discover how Klarna's innovative payment solutions can transform your business. Read on for an in-depth Klarna review that covers fees, features, and benefits, helping you make an informed decision for your merchant services.

Klarna is one of the world's leading fintech companies, providing online payment processing and buy now, pay later services for e-commerce retailers. The platform serves millions of users across 26 markets, handling transactions through Klarna's flexible payment options that enable customers to shop and pay in a seamless and secure manner. Klarna's pay options, such as Pay in 3 and Pay later, allow customers to split a purchase into interest-free instalments or delay payment, offering greater flexibility at checkout. These flexible payment options benefit both merchants and customers by increasing purchasing power and improving the overall shopping experience. Klarna supports businesses in attracting new customers and increasing sales revenue through innovative payment solutions.
The most relevant tools include flexible payment plans like pay in 3 interest-free instalments and pay in 30 days payment plan options. Klarna offers financing plans for longer-term purchases, a mobile app for anywhere shopping, Klarna app purchases with features such as flexible payment options, cashback rewards up to 10% on purchases (limitations apply), fraud protection and secure payment processing, multi-currency support for international transactions, which helps reduce the cost of cross-border payments and merchant dashboards for business management. Subscriptions are also supported as a payment type.
Klarna continues to innovate by expanding its membership benefits, offering exclusive features such as the Klarna card, personalised shopping experiences, and enhanced cashback programmes. With Klarna membership offered as a paid option, users can enjoy additional perks including Klarna membership cashback and access to loyalty cards, all managed conveniently through the Klarna app, and the membership can be cancelled anytime. These developments not only improve customer satisfaction but also help merchants attract and retain new customers in an increasingly competitive market.
Klarna offers clear advantages including flexible payment options that attract customers, strong security with advanced encryption, a large established user base of 93 million customers, and cashback rewards that encourage repeat purchases. However, some financing options carry interest charges, the service depends on store approval for rewards, and regulatory requirements vary between different payment products.
Advantages
Disadvantages
Klarna operates on a merchant fee model where businesses pay commissions and processing fees rather than customers paying upfront costs. The exact fee structure varies based on payment methods chosen and business size. Financing options over 12 months or with interest are regulated products, while shorter-term options like pay in 3 and pay in 30 days remain unregulated credit agreements.
Klarna benefits e-commerce retailers looking to increase conversion rates and attract younger customers who prefer flexible payment options. The platform works well for businesses selling higher-value items where payment flexibility drives sales, companies wanting to offer customer rewards programmes, and merchants expanding internationally who need cross-border payment solutions.
Klarna's flexible payment options are widely used across various industries to enhance customer experience and boost sales. Retailers in fashion, electronics, beauty, and home goods sectors benefit from Klarna's buy now, pay later solutions, allowing customers to spread payment over time without immediate financial burden. Travel and hospitality businesses use Klarna's financing plans to make higher-cost bookings more accessible, while online marketplaces integrate Klarna to offer seamless checkout experiences. Klarna's personalised shopping features and cashback rewards further help merchants in competitive industries attract and retain customers by providing tailored offers and incentives.
While Klarna is a popular choice for flexible payment options and buy now, pay later services, several other providers offer competitive solutions that merchants may consider. Each alternative has its unique features, fee structures, and integration capabilities, making it important for businesses to evaluate which payment partner best fits their operational needs and customer preferences.
Leading Alternatives to Klarna

Square
Square provides a comprehensive payment processing platform with integrated instalment options. Known for its ease of use and point-of-sale hardware, Square enables merchants to offer flexible payments alongside traditional credit and debit transactions. Its seamless integration and transparent fee structure make it a strong alternative for small to medium-sized businesses.

Stripe
Stripe is a leading payment gateway that offers extensive developer tools and APIs, allowing businesses to customise payment experiences, including instalment plans. With global reach and support for multiple currencies, Stripe is ideal for merchants looking to scale internationally while providing flexible payment solutions to their customers.

PayPal
PayPal’s Pay in 4 service allows customers to split purchases into four interest-free payments. Leveraging PayPal’s widespread brand recognition and trusted security, this option appeals to consumers familiar with PayPal’s platform. Merchants benefit from easy integration with existing PayPal checkout options and access to a large user base.
Choosing the right payment provider depends on factors like ease of integration, fee transparency, customer support, and the specific flexible payment features offered. Evaluating these alternatives alongside Klarna can help merchants find the best fit to enhance their checkout experience and drive sales.
Integrating Klarna into your e-commerce platform or point-of-sale system is straightforward thanks to Klarna’s comprehensive API, mobile SDKs, and plugins for popular platforms such as Shopify, WooCommerce, and Magento. Merchants can set up Klarna’s flexible payment options with minimal technical expertise, supported by detailed documentation and developer tools. The Klarna app and merchant dashboards provide real-time transaction insights, customer payment tracking, and management of subscriptions or recurring payments. Klarna also offers dedicated support to assist with onboarding and technical troubleshooting to ensure a smooth setup experience.
Klarna enjoys a strong reputation among both merchants and consumers for its user-friendly payment solutions and innovative features. Customers appreciate the flexibility to pay over time without interest on short-term plans and the convenience of managing purchases via the Klarna app. Merchants report increased conversion rates and higher average order values thanks to Klarna’s flexible payment options and cashback incentives. However, some users note that missed payments can negatively impact financial status and credit scores, and approval processes may vary. Klarna’s commitment to security and fraud protection also contributes positively to its reputation.
At IMS, we serve as an independent adviser to UK businesses seeking the right payment gateway by offering:
Here are 10 common questions and answers about Klarna
Yes, Klarna offers its services to UK residents, including flexible payment options and the Klarna physical card.
Klarna membership is a subscription service with a monthly fee that provides exclusive benefits such as enhanced cashback, personalised shopping, and access to the Klarna physical card.
Yes, a Klarna balance account is required to access certain features like cashback rewards and to manage payments within the app.
Credit approval is subject to status, and paying late or missing payments can negatively impact your financial status and ability to obtain credit.
Yes, Klarna integrates with Apple Pay, allowing users to shop and pay flexibly using their Apple devices.
Cashback issuance depends on store approval, combining offers, product exclusions, and other factors. Terms and conditions apply.
Klarna Financing offers longer-term credit options with clear terms and interest rates, designed for larger purchases.
Klarna employs advanced fraud protection technology to ensure secure transactions for both merchants and customers.
Yes, Klarna provides APIs, mobile SDKs, and plugins for popular platforms like Shopify and WooCommerce for seamless integration.
Yes, Klarna supports multi-currency transactions, helping merchants expand their sales globally with reduced cross-border payment costs.
If you’re considering Klarna for your business, it’s important to compare it with other merchant services to find the best fit. Independent Merchant Services offers a free UK payment gateway comparison service that evaluates Klarna alongside other leading payment providers based on fees, features, integration options, and customer support. Book a short expert call or get a free quote to ensure you choose the optimal payment solution tailored to your business needs.

Roger Milne Founder and CEO of Independent Merchant Services, has helped UK businesses access better payment gateways and lower transaction costs since 2012 through transparent advice and exclusive provider rates.
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