From 2024 the electronic invoice is also mandatory for taxpayers in the flat-rate regime. This means receiving and issuing invoices in .p7m format, which is often confusing. Let's see how to open and read electronic invoices for flat rates.

Flat rates and electronic invoicing

P7M Viewer opens a signed .p7m file and reveals the original document in seconds.
P7M Viewer opens a signed .p7m file and reveals the original document in seconds.
Open .p7m files on your phone
Open .p7m files on your phoneGet the free P7M Viewer app for Android — open and share signed files anywhere.Get the App

Those who are in flat rate regime today have to manage the electronic invoice like everyone else. The invoices received from suppliers arrive digitally signed, therefore as a .p7m file: the XML invoice inside a signed envelope.

How to open a flat rate .p7m invoice

You don't need expensive management software to read a received invoice. With P7M Viewer:

1. Open the Open .p7m tool.

2. Upload the .p7m (or .xml.p7m) invoice.

3. View or download the original invoice.

You can check the data immediately and, if you want, save the invoice as a PDF with "Print → Save as PDF" in your browser.

Keep invoices in order

For a flat rate it is important to file your invoices in an orderly manner. By opening .p7m files with P7M Viewer you get clean XMLs, easy to keep or send to your accountant. With multiple opening you can extract all the invoices for the period into a single ZIP archive.

Also convenient from the phone

Many flat rate workers work on the move: with the free P7M Viewer app for Android you open invoices received via email directly from your smartphone.

Frequently asked questions

Does a flat rate necessarily have to open .p7m files? To check and archive the invoices received, yes: they must be extracted from the .p7m format.

Is opening them free? Yes, opening a single file is free.

Do you need a digital signature to open them? No, you don't need a signature to read a received invoice.

In summary

Even as a flat rate you can open and read .p7m electronic invoices in a simple way: upload the file to P7M Viewer and view or download the invoice in a few seconds, for free.