---
title: "Connecting Payhawk to KSeF for Administrators - Payhawk Help Center"
slug: "connecting-payhawk-to-ksef"
description: "Connect Payhawk to KSeF to receive structured eInvoices from Poland's National eInvoice System: check the VAT number, upload the certificate and connect."
updated: 2026-10-27T15:25:12Z
published: 2026-10-27T15:25:12Z
canonical: "payhawk.com/connecting-payhawk-to-ksef"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://payhawk.com/help/llms.txt
> Use this file to discover all available pages before exploring further.

# Connecting Payhawk to KSeF

You can receive structured electronic invoices directly in Payhawk via Poland’s National eInvoice System (KSeF), using the FA_VAT (XML) format. The integration between Payhawk and KSeF is available only for Polish-registered entities.

This integration helps you reduce manual invoice handling and keeps invoice data consistent from receiving to export.

## Prerequisites

Before connecting to KSeF, make sure your company's VAT number is configured in Payhawk. If the VAT number is not configured, the KSeF connection will fail.

## Connecting the two systems

To connect Payhawk to KSeF:

1. Log in to the [Payhawk Web Portal](https://portal.payhawk.com).
2. Go to **Settings** > **Integrations** > **eInvoicing** tab.
3. In the **KSeF** dialog, click on **Connect**.

![Payhawk integrations page showing active and available integrations for various systems.](https://cdn.payhawk.com/Adm%3AIntegrations%3AKSeF/Connecting_Payhawk_to_KSeF_1_20261016_ai.png)
4. On the **Overview** page, click on **Continue**.

![Instructions for registering with KSeF, including uploading certificates and linking VAT number.](https://cdn.payhawk.com/Adm%3AIntegrations%3AKSeF/Connecting_Payhawk_to_KSeF_2_20261016_ai.png)
5. On the next page:
  1. Under **Upload certificate**, upload the certificate you’ve generated from the KSeF 2.0 application.
  2. Under **Private key**, upload the private key you’ve generated from the KSeF 2.0 application.
  3. Under **Password**, enter the password you’ve generated from the KSeF 2.0 application.
6. Click on **Continue**.
7. On the next page, click on **Back to integrations**.

![Confirmation message indicating certificate verification and next steps for user notification.](https://cdn.payhawk.com/Adm%3AIntegrations%3AKSeF/Connecting_Payhawk_to_KSeF_3_20261016_ai.png)

After the verification is completed, you can start receiving eInvoices from suppliers connected to KSeF and exporting them from Payhawk.

## Useful resources

- [eInvoicing with Payhawk](/help/einvoicing-with-payhawk)