Which Financial and Accounting Systems in Poland are Integrated with KSeF?
- Justyna Mazurek
- 22 hours ago
- 5 min read
The introduction of the National eInvoice System (KSeF) is changing the landscape of finance and accounting in Poland faster than we could have predicted. For business owners and finance professionals, integration with KSeF has become not only a formal requirement, but above all an opportunity for automation, greater control over documents, and the elimination of operational errors. The key question therefore remains: which financial and accounting systems are ready for KSeF, and how does this integration work in practice?
Below, we present an overview of the most popular systems in Poland integrated with KSeF - Saldeo Smart, Comarch ERP Optima, inFakt, and iFirma - and describe how we, as Sparados, combine banking integration with KSeF and accounting systems into one coherent solution.
Table of Contents:
How the KSeF Integration Works and Why It's Important
Integration with KSeF is based on two processes: sending structured invoices to the system and downloading documents issued by contractors. Data exchange takes place via the KSeF API, which transmits statuses, invoice identification numbers, and feedback messages. With the right configuration—a token, authentication, or certificate—companies can automate document flow and avoid time-consuming manual data re-entry.
For finance and accounting departments, this means not only improvements, but also an important element of operational control. Automatically downloaded documents go directly to ERP and accounting systems, ensuring consistency, timeliness, and full data auditability.
Saldeo Smart – A Quick Path to Integration with KSeF
Saldeo Smart is one of the most popular solutions when it comes to easy and intuitive implementation of accounting integration with KSeF. The system acts as an intermediary: it downloads invoice data, converts it into a structured format, and sends it to KSeF, then receives KSeF statuses and numbers.
Users appreciate Saldeo for the fact that the integration is ready practically "right away" - without building their own API connections or configuring complex technical environments. The platform also allows you to download documents from contractors and conveniently post them to the books, which significantly streamlines the work of accounting offices and finance departments.
Comarch ERP Optima – How Companies Using ERP Streamline Their Work with eInvoices
For companies that operate on ERP software, the integration of KSeF into Comarch ERP Optima is a natural step in the development of financial digitization. In Optima, integration is built into the invoicing and accounting modules: administrators can activate KSeF support, set up a test and production environment, and select an authentication method.
Comarch ERP Optima retrieves document statuses and KSeF numbers and allows invoices to be imported from KSeF directly into the system. This means that documents are immediately ready for posting, which eliminates the risk of errors and significantly speeds up the entire data processing process. For medium and large companies using Optima, this is a robust and stable solution that supports full automation of invoice circulation.
inFakt – Can a Simple Invoicing System Facilitate Entry into KSeF?
inFakt is a tool chosen primarily by micro and small businesses. Integration with KSeF is exceptionally easy here: the user generates a token in the KSeF system and enters it in the inFakt settings, and the application automatically takes care of the rest.
The system allows you to send invoices to KSeF, download documents, and receive KSeF statuses and numbers. Thanks to the transparency of the interface and ease of use, the integration is ideal for companies that do not have IT departments and need a tool that is ready to use in a few minutes.
inFakt also supports permission management, which is a great convenience for accounting offices that handle the accounting for many clients.
iFirma – How Does a Popular Platform for SMEs in Poland Prepare Companies for KSeF?
iFirma is one of the most recognizable tools on the online accounting services market. The platform has announced preparations for full integration with KSeF – from automatic invoice sending, through document downloading, to completing contractor data from GUS.
Although the introduction of some features depends on the update schedule and versions being implemented, entrepreneurs can already use part of the integration and should monitor updates in the user panel. Thanks to its transparent interface and familiar structure, iFirma remains a good choice for companies that want to simplify their cooperation with KSeF.
How Sparados Combines Banking, Accounting, and KSeF Integration?
At Sparados, we have created a solution that goes a step further than traditional accounting systems. Our platform connects banking with KSeF, which means that we automatically download structured invoices, analyze them, and assign them to actual financial transactions. As a result, companies do not have to manually match documents to operations - the process becomes fully automated.
Sparados vs Financial & Accounting Systems
We also offer integration with popular accounting systems such as Saldeo Smart, Comarch ERP Optima, inFakt, and InsERT. This allows companies to manage all key financial processes in one place: from expense analysis, through transactions and banking, to KSeF integration and accounting.
If your company wants to have full control of its finances on a single platform, without switching between tools and without the risk of errors resulting from unsynchronized data, Sparados is the best choice. We combine what is most important: banking, KSeF, and accounting - all of your company's finances under full control.
What about the Banks?
The upcoming obligation to use KSeF in Poland means that changes in electronic banking are becoming crucial for sole traders and small businesses, which have so far relied on simple invoice forms at their banks. Transferring processes to a less intuitive government system would require more time, more steps, and a greater risk of errors.
Therefore, the integration of banking with KSeF - enabling the issuance and sending of e-invoices directly from the banking panel - is currently one of the most important elements in preparing the smallest enterprises for the new regulations. Thanks to this, the invoicing process will remain fast, familiar, and consistent with everyday financial operations, and banks will be able to play their natural role as guides, simplifying the implementation of new obligations and minimizing costs for businesses.
Ready for KSeF?
Does it matter how systems in Poland are integrated with KSeF?
The financial and accounting tools market in Poland is quickly adapting to the new realities of KSeF. Saldeo Smart, Comarch ERP Optima, inFakt, and iFirma offer various levels of integration tailored to the needs of companies, from the smallest ones to those using advanced ERP systems.
However, only the combination of KSeF with real-time transaction data – as we do at Sparados – gives companies a complete picture of their finances and automates processes that previously required many hours of work by accountants and financiers.
For entrepreneurs and financial teams, the coming years will be a period of intense digitization. Choosing the right tool to handle KSeF can determine the efficiency of the entire organization. It is therefore worth investing in solutions that not only meet legal requirements but also realistically reduce the burden on the company and ensure full operational control over finances.
Would you like to learn more about the benefits of registering with our system? Contact us today if you are interested in an all-in-one platform that combines corporate finance management with instant virtual payment card issuance, invoice workflow automation, and integration with accounting and KSeF systems. Be ready for change! We are!
