KSeF in SaldeoSMART, and what stays outside it

What it does

SaldeoSMART sends sales invoices to KSeF, Poland's National e-Invoicing System, and pulls purchase invoices back out of it. Both of those sit inside the subscription. The vendor's own label for it is “KSeF za 0 zł” (KSeF at no extra charge). A credit is used only once you want artificial intelligence to code an invoice you have received: to set its parameters, dimensions and type. That is one credit per document, and you decide which invoices need it.

There is also something that never shows up in a feature list and spares people the most frustration: duplicate detection. The same invoice arriving from KSeF and by e-mail from the client will not be posted twice.

Who has to use it, and since when

Mandatory KSeF covered the largest taxpayers from 1 February 2026 (sales above PLN 200 million including VAT) and the remaining businesses from 1 April 2026. Until the end of 2026 the smallest stay outside the mandate, meaning those whose monthly sales documented by invoices do not exceed PLN 10,000 gross. From 1 January 2027 there are no exemptions left.

Rules checked at ksef.podatki.gov.pl, August 2026.

What stays outside KSeF

KSeF covers domestic invoices. Outside it stay invoices from foreign suppliers, receipts from business trips, contracts, policies, notes, letters from the tax office and bank statements. In the accounting firms we work with that is still a fair slice of the monthly pile, and it usually decides whether the team feels any relief at all.

Those documents travel the same road as before: capture, coding, workflow, approval, export. Which is why KSeF is worth planning together with the document workflow rather than instead of it.

What is in which plan

The table comes straight from the vendor's price list, the same one our calculator uses. As of August 2026.

In the plans for accounting firms

In the plans for companies

Worth knowing up front

An invoice from KSeF arrives structured, and structured doesn't mean coded. Someone still has to say that this is a cost of a particular project rather than general outside services. Firms that turned AI coding on for every invoice from KSeF saw their credit use go up, because they added a new stream on top of the old one instead of replacing it.

It's also worth having a written fallback for the times when KSeF does not answer. Dull work, which is why we usually do it with the client during implementation rather than leaving it for later.

What we set up

Permissions and certificates in KSeF, the download of purchase invoices, the rules that decide which of them the AI codes, duplicate detection and the workflow for documents that never touch the system. We don't give tax advice, but if a question of that kind comes up, there are people in our network we are glad to recommend.