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Biała Lista VAT for WooCommerce — check the NIP at the checkout
Settings Settings (2) Checkout Checkout (2)
WooCommerce

Biała Lista VAT for WooCommerce — check the NIP at the checkout

NIP check at the WooCommerce checkout against the Polish VAT taxpayers register (Biała lista), no key.

Download Free
Pro · one-year licence Staging copies are included. The more sites, the cheaper each one
Compatibility
WordPress 6.4+ · WooCommerce 8.6+ · PHP 7.4+ · HPOS · English, polski
Licence
a site + a staging copy, annual
Trial
7 days, no card, one per site
Updated
November 2026
Or all 396 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
A NIP field on the classic and the block checkout ✔ ✔
The check digit is verified before any request ✔ ✔
The name and VAT status from the Biała lista under the field, no key ✔ ✔
The Ministry limit is respected: a 12-hour cache, a stop at 90 searches ✔ ✔
Autofill — ✔
Refusal of unregistered taxpayers — ✔
Re-check — ✔

What it looks like

Settings
Settings (2)
Settings: no key needed, “Try it” looks a NIP up.
Checkout

Key points

What the free version does

The buyer types a NIP (10 digits, with or without “PL”, dashes and spaces); the check digit is verified before any request.

What Pro adds

Autofill of the empty billing fields (name, registered address). Refusal of a NIP with the status “Niezarejestrowany” (taxpayers with the status “Zwolniony” count as registered).

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 8.6+, PHP 7.4+.
  • No account and no key; the Ministry allows 100 searches a day from one address.

Version history

v1.0.0 Current November 2026

A number field at the checkout, a register check, the data kept on the order.

Frequently bought with Biała Lista VAT

All Access Need more? All modules (396) under one licence, new ones are added automatically. 4 990 ₴≈ €98 Learn more →

Full module description

Biała Lista VAT for WooCommerce adds a “NIP” field to the WooCommerce checkout (classic and block) and checks it against the Polish VAT taxpayers register “Biała lista” of the Ministry of Finance through the public API Rejestr WL: the taxpayer name and its VAT status appear under the field, and a NIP that is not in the register stops the order. No account and no key are needed. We found no plugin on wordpress.org that checks the VAT status at the checkout (there is only autofill by NIP from GUS).

We did work with this API live: a NIP check without a key against the real service passed.

What the free version does

The buyer types a NIP (10 digits, with or without “PL”, dashes and spaces); the check digit is verified before any request. When the field loses focus “name — Active VAT payer” appears under it. When the order is placed the NIP is checked again: a NIP that is not in the register stops the order (this can be switched off). NIP, name, VAT status, address, REGON and KRS are kept on the order and shown in a box on the order page. The Ministry allows 100 searches a day from one address, so answers are kept for 12 hours and the module stops at 90 searches: after that the order goes through with a “not verified” note. A register failure does not block the order either.

What Pro adds

Autofill of the empty billing fields (name, registered address). Refusal of a NIP with the status “Niezarejestrowany” (taxpayers with the status “Zwolniony” count as registered). The “register unavailable” switch, a “Check again” button on the order page and a check before shipping: when the order goes to Processing the register is asked once more and an order whose taxpayer is no longer registered is put on hold. There is no search by name here: the API Rejestr WL has none.

How it works, step by step

  1. WooCommerce → Biała lista VAT: press “Check connection” (no key is needed).
  2. Open the checkout: the “NIP” field is there. Try 526-025-09-95.
  3. Decide whether the field is required and whether unknown NIPs are refused.
  4. Place one test order with a NIP and look at the box on the order page.

Under the hood

  • The browser talks to the shop, not to the register; answers are kept for 12 hours and the module stops at 90 searches a day; the checkout calls are throttled per address.
  • HPOS and block checkout compatible; languages: English, polski.

How to install

  1. Plugins → Add New → Upload Plugin: choose the zip and activate it.
  2. WooCommerce → Biała lista VAT: no key needed.
  3. Enter the service credentials and test the connection.
  4. Try one test order before you switch the automation on.

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
Is this an official Biała lista VAT plugin?

No. The Ministry of Finance publishes no WooCommerce plugin; we made the module and it is not affiliated with the Ministry.

What happens after the trial?

Pro switches off, the free part keeps working.

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