Connect Fortnox and BigCommerce

Connecting Fortnox and BigCommerce for a company that uses both could enable the transfer of financial and product data between the accounting platform and the e-commerce solution. Such a connection could support tasks such as synchronizing inventory, automating order processing, and ensuring that sales and financial records remain consistent across both systems.

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

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Why connect Fortnox and BigCommerce?

A company operating both Fortnox and BigCommerce could benefit from connecting these systems to enable data to flow automatically between them. This connection could reduce manual data entry, which is otherwise required to keep information consistent across both platforms. Without such a link, staff could find themselves entering the same customer, order, or inventory data twice—once in each system. Over time, this manual process could result in records that become inconsistent, leading to confusion, errors in reporting, and decisions based on outdated or mismatched figures. By connecting Fortnox and BigCommerce, a company could enable the automatic exchange of key business data. This could include customer details, product information, inventory levels, order statuses, and financial transactions. Exchanging this data could help ensure that sales made in BigCommerce are reflected in Fortnox for accounting and inventory purposes, and that any updates in Fortnox, such as price changes or stock adjustments, are visible in the BigCommerce storefront. The specific data elements that could be exchanged depend on what each system allows through its API and must be determined on a case-by-case basis.

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 Fortnox and BigCommerce 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.