Bookkeeping - Accountancy - Tax Calculation

KSeF Invoicing for Companies in Poland – Stay Compliant with Easybooks

Starting from February 2026, using the National e-Invoicing System (KSeF) becomes mandatory for most companies in Poland — including limited liability companies (Sp. z o.o.), joint-stock companies (S.A.), and foreign entities registered for VAT in Poland.

While KSeF offers many advantages like automation, security, and faster tax refunds, it also introduces new technical, legal, and operational challenges.

At Easybooks, we help your company seamlessly transition to KSeF compliance — from system setup and integration to day-to-day invoicing and reporting.

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Bookkeeping - Accountancy - Tax Calculation

What is KSEF?

KSeF (Krajowy System e-Faktur) is Poland’s official e-invoicing platform, managed by the Ministry of Finance. It requires businesses to issue, send, and store structured e-invoices in a standardized XML format via the KSeF system.

From 2026, using KSeF is no longer optional — it is the only legally accepted method of issuing VAT invoices (with few exceptions).

All VAT-registered companies in Poland (including Sp. z o.o. and S.A.)

Foreign companies with a fixed establishment in Poland
Entities using structured e-invoices

Failing to comply may result in fines, rejected invoices, or delayed settlements with clients.

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What Bookkeeping Services do we offer?

How Easybooks Helps You
Get KSeF-Ready

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Full KSeF Registration & Setu

We handle the initial KSeF access registration, user authorizations, and link your business system with the Ministry’s e-invoicing platform.

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System Integration Support

Using invoicing software or ERP? We ensure your tools are properly integrated with KSeF so you can issue invoices directly from your system — with no disruption.

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Daily Invoicing & Monitoring

We oversee your outgoing invoices, handle transmission errors, and make sure every invoice is validated by KSeF and legally accepted.

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Legal Compliance & Document Archiving
We ensure your invoicing process meets all KSeF, VAT, and accounting standards, with secure storage of your structured invoices.
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Staff Training & Guidance

Not sure how to work with KSeF? We train your team and provide clear, step-by-step support — in English or Polish.

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Bookkeeping - Accountancy - Tax Calculation

Why Choose Easybooks for KSeF?

Business-first approach

We combine technical setup with accounting and tax compliance

Security & Accuracy

We ensure every invoice is validated, traceable, and correctly linked to your accounting

No more missed invoices

You get full support and real-time monitoring

Support in English & Polish

Ideal for foreign-managed companies

KSeF + Tax + VAT – All in One

One team managing your invoicing, accounting, and tax returns
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Bookkeeping - Accountancy - Tax Calculation

Who We Work With

Spółka z o.o. and S.A. companies

Foreign entities with VAT registration in Poland
Businesses using ERP or invoicing tools that require KSeF integration
Growing companies looking to automate invoicing and stay 100% compliant
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Bookkeeping - Accountancy - Tax Calculation

Get KSeF-Ready - The Smart Way

Don’t wait until the deadline. Let Easybooks handle your KSeF registration, setup, and compliance — so your invoicing stays smooth, legal, and efficient.

Book a free consultation today and let our experts make your business fully KSeF-compliant.

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