k24 is enterprise software from fillup for accounting firms and accountants in Poland. Its core goal is to help firms redesign client-side and internal workflows before the mandatory KSeF e-invoicing system takes effect. It brings document circulation, client communication, invoice sending and receiving, and settlement work into a single system, while also providing firms’ clients with the free Firmly app for sales invoices, expenses, and document management.
Based on the information on the page, k24 focuses on sending and receiving KSeF invoices, OCR recognition, automatic data completion, quick archive access, document classification, and JPK_V7 generation. Simplified KPiR accounting can be handled directly in k24 or exported to an existing accounting system; for full accounting scenarios, the emphasis is on flexible data export. For collaboration, it offers notifications, a communicator, client and task assignment, permission granting, and support for an unlimited number of employees, making it suitable for handling month-end closing and invoice clarification work across many clients and accountants in parallel.
The page clearly provides an entry point for a free trial and lists a promotional price of 1 zloty per NIP per month, guaranteed until April 30, 2026. However, it does not show the full plans, long-term pricing, or feature tiers. For integrations, the text mentions export to accounting software and specifically shows Optima export, while other “integrated programs” are still marked as coming soon. No API, developer documentation, or self-hosted deployment information was found.
The main advantage is its highly focused use case: it is built around Poland’s KSeF, collaboration between accounting firms and clients, OCR automation, and document archiving, which can reduce the workflow fragmentation caused by each client using separate tools. Offering Firmly for free to firms’ clients may also help improve client retention. The limitation is incomplete disclosure: security and compliance are described only in broad terms such as “secure digitalization,” with no details on certifications, encryption, backups, or GDPR. The integration ecosystem is also still unclear, and the product is clearly dependent on the Polish tax environment.
k24 is best suited for accounting firms serving local businesses in Poland, especially teams that need to help many clients adopt KSeF in batches while reducing invoice entry and communication costs. It is not suitable for companies primarily handling Chinese tax, Golden Tax, or local e-invoicing workflows. Access from China cannot be determined from the text, and payment methods are not disclosed. For deployment in China, alternatives such as Yonyou, Kingdee, Chanjet, or local e-invoicing service providers should be considered first.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on k24.pl official site.
k24.pl is an Poland SaaS Tools provider. TG4G tracks its product information, an overall rating of 6.0/10, and a China-accessibility score of Limited (proxy recommended). Click "Visit Official Site" to reach k24.pl directly.