Deklaro is Poland's first AI Accounting service that automatically prepares VAT, PIT, and CIT tax declarations. We use artificial intelligence to categorize expenses and income.

What tax declarations does Deklaro handle?

Deklaro automatically prepares VAT declarations (including JPK_VAT), PIT (for freelancers and sole proprietors), and CIT (for companies).

Is Deklaro ready for KSeF?

Yes, we are fully prepared for the National e-Invoice System (KSeF), which will be mandatory from 2026. We offer automatic integration, validation, and submission of electronic invoices.

When will Deklaro be available?

Deklaro is planned to launch in Q1 2025. Sign up for the waiting list to get exclusive access before the official launch.

Deklaro is perfect for small and medium businesses, freelancers, sole proprietors, and accounting firms looking to automate their accounting processes.

Yes, we use end-to-end encryption and secure data storage compliant with GDPR. Your financial data is protected at the highest level.

KSeF 2026 - What is it and how to prepare? Complete guide

What is KSeF?

Krajowy System e-Faktur (KSeF), or the National e-Invoice System, is a central IT system operated by the Polish Ministry of Finance. It enables the issuance, storage, and sharing of structured invoices (e-invoices) in XML format.

The system was launched on January 1, 2022, as a voluntary tool, but from February 1, 2026, it will become mandatory for all VAT taxpayers in Poland.

Key KSeF implementation dates

Date	Event
January 1, 2022	KSeF launched as voluntary system
February 1, 2026	KSeF mandatory for all VAT taxpayers

Who is affected by the KSeF obligation?

The obligation to use KSeF will apply to:

All VAT taxpayers conducting business activity in Poland
Foreign entities registered as VAT taxpayers in Poland
Local government units and their budget entities

Exceptions from the obligation

Some types of transactions may be excluded from the KSeF obligation:

Invoices up to PLN 450 (in specific cases)
Invoices issued to individuals not conducting business activity
Transactions covered by secrecy (e.g., certain public contracts)

How does KSeF work?

Invoice issuance process in KSeF

Prepare the invoice - create a document compliant with the KSeF XML structure
Sign the invoice - use a qualified signature, trusted profile, or system authorization
Send to KSeF - transmit the invoice to the central system
KSeF number assignment - the system assigns a unique identifier
Share with recipient - the invoice is immediately available to the buyer

Benefits of KSeF

Elimination of paper invoices - everything in electronic form
Immediate verification - the system checks data correctness
Secure storage - 10 years of archiving in the system
Faster document circulation - no postal delays
Simplified control - all data in one place

How to prepare your company for KSeF?

Step 1: Audit current processes

Analyze how you currently issue and receive invoices:

What invoicing system do you use?
How many invoices do you issue monthly?
How do you store documents?

Step 2: Choose appropriate software

Select a system that:

Is fully integrated with KSeF
Automates the invoicing process
Offers technical support

Deklaro is fully prepared for KSeF. Our platform automatically validates and sends invoices to the system, eliminating the risk of errors and saving your time.

Step 3: Train employees

Train your team on:

New invoicing procedures
KSeF system operation
Troubleshooting technical issues

Step 4: Pre-implementation testing

Use the KSeF test environment to:

Check system integrations
Practice procedures
Identify potential problems

Common mistakes when implementing KSeF

Postponing preparations until the last minute - implementation takes time
Lack of training - employees must know new procedures
Incompatible software - old systems may not support KSeF
Ignoring tests - testing helps avoid production problems

Summary

KSeF is the biggest change in the Polish invoicing system in years. It's worth starting preparations now to:

Avoid stress before the deadline
Use the transition period for testing
Ensure a smooth transition to the new system

Want to be ready for KSeF? Join the Deklaro waiting list and be the first when we launch our platform with full KSeF integration.