ACI Worldwide.

ACI Worldwide

ACI Secure eCommerce + Klarna.

ACI Worldwide is a global software company that provides mission-critical real-time payment solutions to corporations. Klarna is offered through ACI Secure eCommerce.

General information.

ACI Secure eCommerce is a holistic online payments platform that combines a powerful payments gateway, sophisticated real-time fraud prevention capabilities and advanced business intelligence tools. It provides merchants with access to an extensive global payments network and the confidence that their customers and transactions are protected against fraud. In addition, it offers merchants a sophisticated toolset to orchestrate their payments setup to maximize payment conversion and acceptance, which supports sustained international growth.


Payment service provider


Klarna products available for ACI Worldwide.

Pay in 30 days

Offer an extra 30 days to pay.

Let your customers try before they buy by offering an extra 30 days to complete their payment, interest free.


Offer interest-free instalments.

Allow your customers a modern alternative to point of sale credit by letting them pay in 3 equal interest-free instalments.

Klarna as a marketing tool

You will get access to marketing material and playbooks.

Global reach, local touch

All products are built to be adapted to local preferences and legislations.

Single integration, integrated once

After having integrated Klarna with ACI, product updates will be automatic.

No risk for you or your customers

You will always get paid and the customer is always covered by Klarna's Buyers Protection.

How to integrate Klarna with ACI Secure eCommerce

Copyright © 2005-2023 Klarna Bank AB (publ). Klarna Bank AB (publ) is authorised and regulated by the Swedish Financial Supervisory Authority. Deemed authorised by the Prudential Regulation Authority. Subject to regulation by the Financial Conduct Authority and limited regulation by the Prudential Regulation Authority. Details of the Temporary Permissions Regime, which allows EEA-based firms to operate in the UK for a limited period while seeking full authorisation, are available on the Financial Conduct Authority’s website. Klarna Bank AB offers both regulated and unregulated products. Klarna’s Pay in 3 instalments and Pay in 30 days agreements are not regulated by the FCA. Klarna Bank AB (publ) registered and head office: Sveavägen 46, 111 34 Stockholm, Sweden. A Swedish public limited company (publikt bankaktiebolag) registered with the Swedish Companies Registration Office with organisation number: 556737-0431.