Fortnox integration – automate HR and payroll flows

Integrate Fortnox with HR, payroll and other WorkTech systems. Automate data flows, cut manual work and get full control with Twine.

At a glance

System type
Payroll system
Direction
One- or two-way
Sync
Scheduled or on demand
New employees
Created automatically
Data storage
Databases in Sweden

How Twine helps you integrate with Fortnox

Working across several HR and payroll systems is everyday life for many organisations and their HR and payroll teams. But when the systems are not integrated, you get manual work, entry errors and needless admin.

Twine helps you integrate Fortnox with your other systems so the right data is in the right place, automatically.

Whether you want to sync employee data with your payroll system, send payroll input to it, or create users automatically, we build a flexible, tailored integration for your needs.

Our integration syncs Fortnox data with any system on our platform. See which systems can be integrated with Fortnox via Twine.

How a Fortnox integration works

The integration syncs personal details and absence between your HR system and Fortnox Lön, Fortnox's payroll product.

Personal details. When an employee's address, contact or salary details change in the HR system, the employee register in Fortnox is updated automatically.

Absence. Absence such as holiday, sick leave and VAB (leave to care for a sick child) is read from the HR system, for example Personio, Hibob, Huma HR, Evity, Simployer One or Hailey HR, and registered against the right person and day in Fortnox.

Our integration syncs data between Fortnox and any system in your landscape. When information is updated in one system, the change is passed on automatically.

If an employee does not exist in Fortnox, the integration can create them directly. No manual handling, and less risk of errors.

You decide:

  1. 01 Which data is sent
  2. 02 How fields are mapped
  3. 03 How often the systems sync
  4. 04 Whether the integration is one-way or two-way

What can be integrated with Fortnox?

Our integrations are dynamic, so you choose exactly which data to send and how it is mapped. This is the data Twine can exchange with Fortnox:

  • Employees Both ways
  • Time reports Both ways
  • Projects Both ways
  • Name
  • Address
  • Email
  • Phone
  • Bank account (clearing and account number)
  • Employment type
  • Job title
  • Monthly salary
  • Start date
  • Employment end date
  • Personal identity number
  • Absence

And more.

Who is this integration for?

This integration is built for teams that use Fortnox and want to integrate it with their other systems, for example 4human, Agda (File), Medvind WFM, Entra ID, Teamtailor, Skovik, Aboard and Agda PS.

See the flow
Choose a system
Fortnox Payroll system
Twine Mapping & monitoring
Employees from 4human to Fortnox
4human HR system

Two-way integration with Fortnox

Yes. For example, employees, time reports and projects can originate in Fortnox and update your other systems, while employees, time reports and projects are sent back to Fortnox.

Why companies choose Twine for Fortnox integrations

We specialise in HR and payroll integrations and understand how the systems work, and work together, in practice. Twine is built to keep integrations secure and flexible over time.

Get started fast

Set up and activate integrations without long development projects

Flexible data model

Choose exactly which data is sent, and how

Scalable integration platform

Add more systems and integrations as the business grows, and change the ones you have

Events and notifications

Send and trigger notifications based on events in your systems

Access to an MCP server

Let your internal AI agents talk directly to your HR systems landscape

Real-time monitoring and history

Full control of your integrations with status, logs and notifications

Secure handling of HR data

GDPR-compliant cloud with databases in Sweden, ISO 27001 certified, built for Nordic security requirements

Built for Nordic HR & payroll tech

We know the local systems, regulations and needs

With Twine you get more than a Fortnox integration: a full platform for building a cohesive, future-proof HR systems landscape.

About Fortnox

Fortnox is a business platform with products for accounting, invoicing, financing and employees, among other things. Customers also get access to other business services, and to hundreds of external systems through partnerships.

Fortnox was founded in 2001 and is headquartered in Växjö, Sweden. Its shares are listed on the Nasdaq Stockholm main market.

Read more about Fortnox →

Want to know how a Fortnox integration would work for you?

Book a walkthrough and we will show you how your systems landscape can be automated with Twine