What is KSeF?
How to use KSeF?
What is an e-Invoice (e-Faktura)?
From when do invoices have to be issued in KSeF?
How can sole proprietors who don’t have internet access and don’t use a computer issue invoices?
Do invoices from foreign suppliers have to be reported in KSeF?
What is offline24 mode?
What is the difference between online and offline mode? What is the KSeF certificate for?
Do invoices for consumers (B2C) have to be issued in KSeF?
How to issue an invoice for a customer outside the EU?
By when must an invoice be submitted to KSeF?
Do I have to send an online invoice on the same day I issue it?
What does the system check before assigning a KSeF number?
What if I send an online invoice on 1 February but receive the KSeF number only on 2 February?
What if an invoice contains calculation errors, e.g., the total amount due is incorrect?
Will it be possible to edit an issued invoice if an error is found?
What invoice issuance modes will be available in KSeF 2.0?
What is a QR code and what is it used for?
How does a sole proprietor obtain access to KSeF?
How is the initial authorization assigned in KSeF for a taxpayer that is not a natural person?
What is KSeF?
How to use KSeF?
What is an e-Invoice (e-Faktura)?
From when do invoices have to be issued in KSeF?
How can sole proprietors who don’t have internet access and don’t use a computer issue invoices?
Do invoices from foreign suppliers have to be reported in KSeF?
What is offline24 mode?
What is the difference between online and offline mode? What is the KSeF certificate for?
Do invoices for consumers (B2C) have to be issued in KSeF?
How to issue an invoice for a customer outside the EU?
By when must an invoice be submitted to KSeF?
Do I have to send an online invoice on the same day I issue it?
What does the system check before assigning a KSeF number?
What if I send an online invoice on 1 February but receive the KSeF number only on 2 February?
What if an invoice contains calculation errors, e.g., the total amount due is incorrect?
Will it be possible to edit an issued invoice if an error is found?
What invoice issuance modes will be available in KSeF 2.0?
What is a QR code and what is it used for?
How does a sole proprietor obtain access to KSeF?
How is the initial authorization assigned in KSeF for a taxpayer that is not a natural person?
Even more convenient with the app
The MIA Biznes application.
Download and manage your business comfortably. Don’t miss important events. All the functions of the service are now at your fingertips in one application.
Available on the App Store and Google Play (coming soon).
Need help?
We are at your disposal and happy to assist you in using MIA BIZNES.
Send your request via the contact form, and we will get back to you as soon as possible.
Your request has been sent successfully!
Our specialist will contact you shortly.
Your request has been sent successfully!
Thank you for your request.
Sign in
Forgot your password?
Don’t have an account yet?
Sign up
Sign up
Complete verification
W ciągu 15 minut od rejestracji kod weryfikacyjny zostanie wysłany na podany
przez Ciebie
e-mail.
Forgot your password?
Change password
Enter the confirmation code received by e-mail and the new password.
Your request has been sent successfully
Our specialist will contact you during business hours
as soon as it is possible.