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Published: 8 september 2026
New Validation Rules for E-Invoicing
To stay aligned with Peppol standards and prevent invoices from failing downstream, we're introducing three new validation...
Blog
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Published: 9 juli 2026
API Update: New Comment Log for Supplier Invoices
In September 2026, we are launching a dedicated and structured log for comments on supplier invoices in the Fortnox...
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Published: 6 juli 2026
Do you want to publish your integration during the summer?
If your goal is to launch your integration during the summer, we want to bring an important detail to your attention: we'll be pausing publication reviews...
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Published: 25 juni 2026|Last updated: 1 oktober 2026
New EAN/GTIN Validation
We plan to add support for automatic EAN/GTIN storage, including validation to prevent personal data or invalid characters from being included in...
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Published: 1 juni 2026|Last updated: 23 juni 2026
Easier management of bundle items
As of early September 2026, you no longer need to include sub-items when submitting quotes, orders, and invoices that contain bundle items. We will generate...
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Published: 26 maj 2026
New e-invoice validations – here is what you need to know
As of June 30, 2026, we are introducing two new validations for...
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Published: 8 januari 2026
Changes in Fortnox API Endpoint
From 9th of February all requests towards apps.fortnox.se/3 will be redirected to...