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Invoicing & KSeF

Invoices From the Till. KSeF Built In.

Issue a VAT invoice for a paid order in seconds. POSolid sends it to KSeF for you — no extra program, gateway or integrator.

Your POS Talks to KSeF Directly.

  • ✓ No separate KSeF program, gateway or paid integrator
  • ✓ Save the venue's KSeF certificate once — every invoice goes out on its own
  • ✓ Status, KSeF number, QR code and UPO on every invoice
  • ✓ Ready for 2027, when KSeF accepts only certificate logins

In Poland every invoice issued in POSolid becomes the official FA(3) e-invoice and is sent to KSeF in the background. You don't export files, copy numbers into another program or pay a middleman per document: the till, the invoice and KSeF are one system.

If the connection drops, POSolid checks with KSeF before sending again, so an invoice never lands there twice. Anything that needs a person — an expired certificate, a rejected document — is gathered in one list, and the right people get a notification.

KSeF is Poland's system, but invoicing isn't. A venue in Germany, Austria or anywhere else issues, numbers and keeps its invoices in POSolid: the PDF is the invoice the moment it is issued, in German or English, in the venue's own currency and with its own VAT rates.

The rest works the same everywhere: one invoice per paid order, amounts taken exactly from what was paid, number series that never repeat, corrections instead of edits, a PDF copy e-mailed to the buyer, and EU VAT numbers checked in VIES.

Invoicing Outside Poland, Too.

One system for the till and the invoice — in Poland it talks to KSeF, everywhere else it simply issues the invoice.

Invoices That Keep Your Stock Right.

  • ✓ Invoice a catering job or a wholesale sale — the goods leave stock automatically
  • ✓ Suppliers' invoices from KSeF become a filled-in delivery in one tap
  • ✓ Supplier corrections return goods or correct prices on the right delivery

An invoice without an order — menu items, stock products or services — takes its goods out of stock when it is issued: dishes through their recipes, products directly, oldest stock first. Fill it from a supply plan and the plan is marked invoiced.

The other way round, the invoices your suppliers send to KSeF arrive in POSolid by themselves. Receive one into stock with the lines already filled in; POSolid notices a delivery you already typed in and offers to link it instead of booking it twice.

Questions About Invoicing & KSeF.

Do I need separate software to send invoices to KSeF?

No. POSolid creates the FA(3) e-invoice and sends it to KSeF itself. You save the venue's KSeF certificate once in the invoicing settings; there is no separate program, gateway or integrator to buy.

What do I need to connect POSolid to KSeF?

The venue's NIP and address in the organization settings, a number series, and the venue's own KSeF certificate. You can start on KSeF's Test environment with a test certificate made in one click, and switch to Production when you're ready.

Will KSeF tokens still work in 2027?

No — KSeF accepts tokens only until 31 December 2026, and from 1 January 2027 only certificates. POSolid already logs in with a certificate and reminds you before it expires.

Can I issue invoices if my restaurant is outside Poland?

Yes. Outside Poland invoices are issued and kept in POSolid without KSeF. The PDF is the invoice from the moment it is issued, printed in German or English, in your currency and with your VAT rates.

Does an invoice update my inventory?

Yes. An invoice issued without an order takes its menu items and stock products out of stock automatically. Invoices for orders don't, because the order already did. Supplier invoices from KSeF are received into stock with their lines filled in.

Can an invoice be edited after it is issued?

No — an issued invoice is never edited. You issue a correction: reverse the whole invoice or set new quantities for the lines that changed, with a reason. In Poland the correction goes to KSeF like any invoice.

How do I get invoicing?

Invoicing is an add-on module of POSolid. Start your free trial and contact us — we switch it on for your venue, and the Help Center walks you through the setup.

Invoice From the Till, Not From a Spreadsheet.

Start a free POSolid trial and ask us to switch on invoicing — KSeF included, no extra software.

Start 14-day free trial →