Connect Klarna and Sage

Connecting Klarna and Sage for a company could make it possible to automate the transfer of payment and financial data between the two platforms. This could support more accurate accounting, reduce manual data entry, and help ensure that transaction records in Sage reflect payments processed through Klarna.

You can build this integration on the System2System platform. We design the connection between Klarna and Sage around the way you work — not as an off-the-shelf connector, but to fit your systems.

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Why connect Klarna and Sage?

A company running both Klarna and Sage could benefit from connecting these systems to enable data exchange and reduce manual processes. If the two systems are not connected, staff may need to enter the same transaction information in both Klarna and Sage, which can increase the risk of errors and consume additional time. Without a connection, records in each system could drift out of alignment, so financial data, payment statuses, or customer information may become inconsistent. This can result in decisions being made based on outdated or incomplete figures, affecting cash flow management and financial reporting accuracy. If a connection were established, it could support the transfer of payment information, sales records, customer details, and reconciliation data between the two platforms. For example, Klarna may handle payment processing and customer purchase data, while Sage could be used for accounting, invoicing, and broader financial management. Exchanging relevant data could help ensure that accounts are up to date in Sage whenever transactions are completed in Klarna, and it could automate the reconciliation of payments. The specific data that can be exchanged depends on what each system exposes through its API and is determined per situation.

How System2System builds an integration

Connectors

We connect to each system through the interface it offers — an API, a database, a file exchange or a webhook — and handle authentication, rate limits and retries.

Mapping

Fields rarely line up one to one. We map and transform the data so both systems receive it in the shape they expect.

Workflow

We define what triggers an exchange, in which direction data flows and which system takes precedence when the two disagree.

Monitoring

Every exchange is logged. Failures are flagged and can be replayed, so nothing disappears without anyone noticing.

What can actually be exchanged?

That depends on what Klarna and Sage make available through their APIs, on the licences and modules in use, and on the version each system runs. Which records are synchronised, in which direction and how often, is something we determine together before any work starts.

We are happy to look at your specific situation and tell you what is feasible — including when the answer is that it is not.