Biztax file viewer
Open a .biztax file and read the tax return it holds: every stated line under its form code, who files it, and the documents attached. Everything happens in your browser.
What is a .biztax file?
It is what you upload to Biztax, the FPS Finance application for corporate and legal entities tax returns. Inside are one or more XBRL instances: each figure is tagged with a concept of the official taxonomy, and the annexes (annual accounts, general meeting minutes) are embedded as PDFs. This viewer names every figure with the code and wording of the paper form.
Does it check my return?
No. It shows what the file states. Biztax runs its own validation rules when you upload the file, and those decide whether the return can be signed.
Is my return uploaded anywhere?
No. The file is read and rendered entirely in your browser. It never leaves your device and is not sent to our servers.