Syncs customers, products, orders, and invoices between WooCommerce and Fortnox. Supports automation flows, refunds, inventory management, accounting accounts, shipping mapping, and extensive developer hooks. Features Order and customer sync : Creates and updates Fortnox customers, syncs orders with
Refunds : Supports partial and full crediting as orders or credit invoices in Fortnox.
Shipping : Mapping of WooCommerce shipping methods and zones to Fortnox WayOfDelivery, alternative SKU solution for shipping within and outside the EU.
Accounting : Management of revenue accounts per VAT (0/6/12/25%), payment accounts per payment method, and EU sales accounts per country.
Automation : Automatic sync based on order status, auto-invoicing, auto-bookkeeping, auto-marking as paid, and auto-sending invoices.
Inventory : Fetching inventory levels from Fortnox to WooCommerce as needed.
Company Fields : Organization number in checkout and order view; validation and sync to customer in Fortnox.
Sequence Number : Prefix for sequential order numbers in WooCommerce and Fortnox.
Admin UI : Fortnox column in order and product lists for status and quick actions, product metafields for sales account and purchase price.
Bulk Tools : Bulk sync of products and orders within a date range.
Onboarding : Step-by-step activation with license key, organization number, app activation, and settings retrieval.
Developer Friendly : Extensive support for actions and filters to customize payloads and flows.
Detailed Feature Overview
Customers * Creation/update in Fortnox based on WooCommerce order. * EU VAT logic and VATType: SEVAT, EUVAT, EUREVERSEDVAT, EXPORT. * Organization number field in checkout (optional). * Option: “Do not sync customer on update.”
Orders * Syncs customer number, document/order number, currency, date, order lines, shipping, discounts, etc. * Support for Fortnox Warehouse module and proper VAT handling per order line.
Products * Automated and manual sync, variant support, SKU handling, and price lists. * Product metafields: Fortnox sales account (select from Fortnox revenue accounts), purchase price.
Invoices * Automatic invoice generation and bookkeeping upon successful order sync, with options for auto-marking as paid and auto-sending the invoice.
Refunds * Full and partial refunds, with correct VAT calculation for shipping credits.
Shipping * Mapping of WooCommerce shipping methods and zones to Fortnox, as well as specific SKU solutions for shipping within and outside the EU.
Accounting * Revenue accounts for VAT (0/6/12/25%), sales accounts per EU country, payment accounts per payment method.
Automation * Flexible settings for automated actions at various order statuses, including invoicing and refund flows.
OSS * The plugin supports OSS
**Admin and UX * Clear admin interface with status columns in order and product lists, quick actions, and bulk tools.
Onboarding and Security * Step-by-step activation and secure authentication via AJAX.
For full FAQ and troubleshooting, please visit our documentation page .
Automated testing
For developers: PHPUnit is run with Composer ( composer test , see tests/README.md in the repo). Browser end-to-end tests use Playwright against a disposable WordPress instance in Docker; see e2e/README.md in the repository.
See it in action
Screenshots & previews.
General settingsAutomation settingsAccounting settingsOrder settingsShipping settingsProduct settingsBulk actionsAdvanced settings
02 / Source details
Gettingstarted.
01Install and activate WooCommerce.
02Install and activate this plugin.
03Go to Settings → Fortnox and follow the onboarding steps.
04Fetch Fortnox settings via the “Fetch settings” button.
05Configure automation flows, accounting accounts, shipping mapping, and product sync.
For a detailed installation guide, please visit our Fortnox installation guide .
03 / Source details
Frequently asked questions.
Where do I report security bugs found in this plugin?
Please report security bugs found in the source code of the WooCommerce Fortnox Integration plugin through the Patchstack Vulnerability Disclosure Program . The Patchstack team will assist you with verification, CVE assignment, and notify the developers of this plugin.
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