Price list for REST KSeF API functionality
Note! The price list is valid from the entry into force of the mandatory KSeF (February 1, 2026).
Until then, using the KSeF REST API is completely FREE.
All prices are net prices, to which VAT must be added.
For your convenience and to provide the greatest possible flexibility, we present 3 different license models. The choice of the most advantageous model is of course up to you:
License for the number of operations performed
Operations 500
per month
PLN200
Allows to perform up to 500 KSeF REST API operation calls
Number of operation calls in a packet
500
Cost of 1 query outside the plan1.20 PLN
Access to all KSeF REST API operationsYES
Access to the KSeF Invoices applicationYES
Technical supportYES (e-mail)
Encryption of transmitted invoicesYES
Queuing e-invoice shipmentsNO
KSeF REST API as a container running locallyNO
Batch sending of e-InvoicesNO
Operations 2500
per month
PLN830
Allows to perform up to 2500 KSeF REST API operation calls
Number of operation calls in a packet
2 500
Cost of 1 query outside the plan1.10 PLN
Access to all KSeF REST API operationsYES
Access to the KSeF Invoices applicationYES
Technical supportYES (e-mail)
Encryption of transmitted invoicesYES
Queuing e-invoice shipmentsNO
KSeF REST API as a container running locallyNO
Batch sending of e-InvoicesNO
Operations 5000

per month
PLN1330
Allows to perform up to 5000 KSeF REST API operation calls
Number of operation calls in a packet
5 000
Cost of 1 query outside the plan1.00 PLN
Access to all KSeF REST API operationsYES
Access to the KSeF Invoices applicationYES
Technical supportYES (email, phone)
Encryption of transmitted invoicesYES
Queuing e-invoice shipmentsNO
KSeF REST API as a container running locallyNO
Batch sending of e-InvoicesNO
Operations 10000
per month
PLN1995
Allows to perform up to 10,000 KSeF REST API operation calls
Number of operation calls in a packet
10 000
Cost of 1 query outside the plan0.90 PLN
Access to all KSeF REST API operationsYES
Access to the KSeF Invoices applicationYES
Technical supportYES (email, phone)
Encryption of transmitted invoicesYES
Queuing e-invoice shipmentsNO
KSeF REST API as a container running locallyNO
Batch sending of e-InvoicesNO
Operations Individual
per month
Ask for a quote if you need more than 10k KSeF REST API operation calls
Number of operation calls in a packet
CONTACT
Cost of 1 query outside the plan
CONTACT
Access to all KSeF REST API operationsYES
Access to the KSeF Invoices applicationYES
Technical supportYES (email, phone)
Encryption of transmitted invoicesYES
Queuing e-invoice shipmentsYES
KSeF REST API as a container running locallyYES
Batch sending of e-InvoicesYES
Business operations whose invocation is charged, i.e. increases the number of queries executed within individual packages:
- ksefInvoiceGenerate
- ksefInvoiceValidate
- ksefInvoiceSend
- ksefInvoiceGet
- ksefInvoiceQueryResult
- ksefInvoiceVisualize
Invoice quantity license
Invoice – sales document.
Attention! This type of license allows a given Client to handle a number of sales invoices specified within a given plan. The number defined within the package applies only to sales invoices. There are no restrictions on the number of operations called or the number of cost invoices collected.
Invoices 2500
per month
PLN2200
Handling of up to 2,500 sales invoices per month
Access to all libraries and REST APIYES
Access to the KSeF Invoices applicationYES
Technical supportYES (e-mail)
Encryption of transmitted invoicesYES
Queuing e-invoice shipmentsNO
KSeF REST API as a container running locallyNO
Batch sending of e-InvoicesNO
Invoices 5000

per month
PLN3600
Handling of up to 5,000 sales invoices per month
Access to all libraries and REST APIYES
Access to the KSeF Invoices applicationYES
Technical supportYES (email, phone)
Encryption of transmitted invoicesYES
Queuing e-invoice shipmentsNO
KSeF REST API as a container running locallyNO
Batch sending of e-InvoicesNO
Invoices 10000
per month
PLN7200
Handling up to 10,000 sales invoices per month
Access to all libraries and REST APIYES
Access to the KSeF Invoices applicationYES
Technical supportYES (email, phone)
Encryption of transmitted invoicesYES
Queuing e-invoice shipmentsNO
KSeF REST API as a container running locallyNO
Batch sending of e-InvoicesNO
Invoices Individual
per month
Ask for an offer if you need to handle more than 20k KSeF invoices
Number of invoices in the package
CONTACT
Access to all libraries and REST APIYES
Access to the KSeF Invoices applicationYES
Technical supportYES (email, phone)
Encryption of transmitted invoicesYES
Queuing e-invoice shipmentsYES
KSeF REST API as a container running locallyYES
Batch sending of e-InvoicesYES
License per number of clients
Client – a unique Tax Identification Number for which KSeF invoices are generated, sent or downloaded.
Attention! This type of license allows you to service a number of Clients specified within a given plan. There are no restrictions on the number of operations called and the number of sales and cost invoices handled.
Customers 25

per month
PLN6250
Service for up to 25 clients within the package
Number of clients in the package
up to 25
Access to all libraries and REST APIYES
Access to the KSeF Invoices applicationYES
Technical supportYES (email, phone)
Encryption of transmitted invoicesYES
Queuing e-invoice shipmentsNO
KSeF REST API as a container running locallyNO
Batch sending of e-InvoicesNO
Customers 50
per month
PLN10000
Service for up to 50 clients within the package
Number of clients in the package
up to 50
Access to all libraries and REST APIYES
Access to the KSeF Invoices applicationYES
Technical supportYES (email, phone)
Encryption of transmitted invoicesYES
Queuing e-invoice shipmentsNO
KSeF REST API as a container running locallyNO
Batch sending of e-InvoicesNO
Customers 100
per month
PLN17500
Service for up to 100 clients within the package
Access to all libraries and REST APIYES
Access to the KSeF Invoices applicationYES
Technical supportYES (email, phone)
Encryption of transmitted invoicesYES
Queuing e-invoice shipmentsNO
KSeF REST API as a container running locallyNO
Batch sending of e-InvoicesNO
Individual Clients
per month
Ask for a quote if you need to serve more than 100 clients
Number of clients in the package
CONTACT
Access to all libraries and REST APIYES
Access to the KSeF Invoices applicationYES
Technical supportYES (email, phone)
Encryption of transmitted invoicesYES
Queuing e-invoice shipmentsYES
KSeF REST API as a container running locallyYES
Batch sending of e-InvoicesYES