Fortnox to PostgreSQL integration

Connect Fortnox to PostgreSQL and automatically sync your finance & accounting data.

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Fortnox

Data source

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CONNECTOR SOURCE

Fortnox to PostgreSQL

Connect Fortnox to PostgreSQL and automatically sync your finance & accounting data. Weld extracts Invoices, Payments, Accounts, and Transactions from Fortnox, loads them into PostgreSQL, and lets you transform the data using SQL or dbt, no custom scripts required.

Fortnox data schema

29tables

471fields

- Table

- Sub table

React Flow

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Everything you need to get started

Fortnox

Setup guide Data schema29 tables Connector page

PostgreSQL

Setup guide Connector page

Weld Connect API

Set up programmatically

Use the Weld Connect REST API to create Fortnox connections, configure ELT syncs, and manage pipelines entirely through code. Built for embedding, automation, and CI/CD workflows.

Explore Weld Connect API reference

POST/elt_syncs

# Create a Fortnox ELT sync
curl -X POST https://connect.weld.app/elt_syncs \
  -H "x-api-key: $API_KEY" \
  -d '{
    "connection_id": "conn_abc123",
    "integration_id": "fortnox",
    "destination_schema_name": "fortnox_data",
    "sync_interval": "0 * * * *"
  }'
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FAQs

How do I sync Fortnox data to PostgreSQL?

Sign up for Weld, connect Fortnox as a source and PostgreSQL as a destination. Weld handles the extraction, loading, and lets you transform data using SQL or dbt.

What Fortnox data can I sync to PostgreSQL?

You can sync Invoices, Payments, Accounts, Transactions, and Customers. The available objects depend on your Fortnox account permissions and configuration.

How often does Weld sync data from Fortnox?

Sync frequency depends on your Weld plan. Schedules range from every 5 minutes to daily intervals. Each sync processes only new and changed data.

Can I transform Fortnox data before it lands in PostgreSQL?

Yes. Weld supports SQL-based transformations in the platform and integrates with dbt Cloud. You can clean, join, and model your data before analysis.

Is the Fortnox to PostgreSQL integration secure?

Yes. Weld encrypts all data in transit and at rest, is SOC 2 Type II certified, and supports IP whitelisting. Credentials are stored encrypted and never logged.