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Polish Invoice Sync for WooCommerce — Fakturownia, inFakt, wFirma and KSeF
Invoice box in the order Invoice in the customer order Invoice list Settings
WooCommerce

Polish Invoice Sync for WooCommerce — Fakturownia, inFakt, wFirma and KSeF

Invoices in Fakturownia and inFakt from WooCommerce orders with one button: buyer data, NIP at checkout, PDF, no duplicates. Pro adds automatic documents, corrections, KSeF through your service and wFirma.

Download Free
Pro · one-year licence Staging copies are included. The more sites, the cheaper each one
Compatibility
WordPress 6.2+ · WooCommerce · PHP 7.4+ · HPOS · classic and block checkout · languages: English, Polish
Licence
a site + a staging copy, annual
Trial
7 days, no card, one per site
Updated
November 2026
Or all 394 Pro modules with All Access — 4 990 ₴ / year ≈ €98

What Free has,
and what Pro adds

The free version works with no time limit. Pro adds the rest of the features in the table.

Feature Free Pro
Fakturownia and inFakt in one plugin ✔ ✔
A button on the order: products, shipping, fees, the VAT rate of each line ✔ ✔
No double invoices ✔ ✔
Buyer data: a company with NIP or EU VAT number, or a private person ✔ ✔
NIP field at checkout with a checksum check ✔ ✔
PDF for you and the buyer ✔ ✔
Payment methods and paid status ✔ ✔
Readable errors and a retry button ✔ ✔
For VAT exempt sellers: zw, np or 0% with the legal basis ✔ ✔
Automatic documents by status — ✔
Proformas and receipts in Fakturownia — ✔
Correction invoices — ✔
KSeF through your service with the number on the order — ✔
E-mail with the document from your service — ✔
Bulk issue — ✔
wFirma as a third service — ✔

What it looks like

Invoice box in the order
The Fakturownia invoice right in the order: PDF, KSeF, email.
Invoice in the customer order
The buyer downloads the invoice PDF from their order.
Invoice list
Every document of the shop with its number and status.

Key points

What the buyer sees

The buyer sees a NIP field on the classic and block checkout with a checksum check, and can download the document PDF from the account.

What the admin gets

You pick the service and paste the API key. The order has a document button, and if the service refuses, you see the reason and a retry button.

How much it costs

The base version is free. Pro costs 990 UAH for a one-year licence. A year of updates, technical support and all Pro features.

The trial starts when you ask

A fresh install is the free version, nothing switches on by itself. The “Try Pro for 7 days” button → e-mail → the key right in the window and by e-mail.

One key — a site and a staging copy

Moving the site? Unlink the licence on the old domain and activate it on the new one yourself. A staging copy (staging., dev.) works with the same key and does not take a site slot. For studios — keys for 5 or 25 sites, or unlimited.

Technical requirements

  • WordPress 6.2+, WooCommerce, PHP 7.4+.
  • A Fakturownia or inFakt account, also wFirma in Pro.
  • KSeF is set up in your service.

Version history

v1.0.0 Current November 2026

Fakturownia, inFakt, NIP, PDF.

Frequently bought with Polish Invoice Sync

All Access Need more? All modules (394) under one licence, new ones are added automatically. 4 990 ₴≈ €98 Learn more →

Full module description

Polish Invoice Sync is for Polish stores: an invoice in Fakturownia or inFakt is created from a WooCommerce order with one button, and the buyer gets a PDF.

What the buyer sees

The buyer sees a NIP field on the classic and block checkout with a checksum check, and can download the document PDF from the account. The admin sees a button on the order.

What the admin gets

You pick the service and paste the API key. The order has a document button, and if the service refuses, you see the reason and a retry button. An order gets one document of a kind even after two clicks or a lost connection.

How it works, step by step

  1. You pick the service and paste the key.
  2. The buyer places an order, with NIP if needed.
  3. You press the button or, in Pro, the document is created at a status.
  4. The service returns the number and PDF.
  5. The document status shows on the order.

Under the hood

  • Fakturownia removes duplicates itself. With inFakt a lost answer can leave a duplicate, so check the log.
  • Foreign OSS rates on inFakt are refused on purpose, with a clear message.
  • Corrections and KSeF for wFirma stay in wFirma.

How to install

  1. Plugins → Add New → Upload Plugin: pick the zip and activate.
  2. WooCommerce → Invoice settings: pick the service and paste the key.
  3. Create a document on a test order.
  4. For Pro: paste the key or start the 7-day trial.

The module is not on wordpress.org yet: the free version and Pro are one archive from this page. Without a key it works as the free version.

Questions
about the module

Didn't find the answer? Message us on Telegram and we'll reply within a business day.

@catcode_support Setup, compatibility, activation
Does the plugin send to KSeF itself?

Only through your service and in Pro.

Is wFirma included?

Yes, in Pro, for invoices, PDF and e-mail only.

Can a double invoice happen?

The plugin blocks it within an order. With inFakt, after a lost answer, check the service.

Not quite what you are looking for?

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