How to receive an invoice from KSeF step by step

Receiving invoices through KSeF means regularly checking incoming invoices issued to the company's NIP, not merely downloading one PDF file. From February 1, 2026, a company may receive an invoice in KSeF even if it does not yet issue its own invoices through the system.

In the standard flow, an invoice is considered received on the day KSeF assigns its KSeF number. Opening the invoice manually, downloading a file or receiving a PDF preview is operationally useful, but it should not replace checking the KSeF-number date.

The largest risk is not the login itself. It is the absence of a company process: who checks incoming invoices, who approves the business purchase, who clarifies disputed documents and which invoices can be passed to accounting.

Treat incoming invoices in KSeF as a permanent document inbox. Regular checks help avoid overdue payments and late clarification of purchases.

A safe process has three stages: retrieve the invoice from KSeF, confirm the business reason for the purchase, and only then book it or pay it. These stages should have owners or at least clear working statuses.

A PDF from the seller is convenient, but for a standard structured invoice the key record remains the invoice in KSeF, its KSeF number and the data needed for settlement.

The simplest process starts with choosing the tool you will use: the KSeF Taxpayer Application, the KSeF mobile app, e-mikrofirma, accounting software with KSeF integration or a private tool such as KSeFGPT.

Then confirm that the company has access to KSeF. A sole trader with a Polish NIP has basic access, while companies and other entities may need proper permissions, a qualified seal or a ZAW-FA notification if there is no other access route.

After signing in, open the invoice list and search for incoming documents. That is where invoices issued to your company in KSeF should appear. You can download an invoice, save it, print it or pass it into the accounting workflow.

The Ministry of Finance explains that receiving invoices with KSeF is mandatory from February 1, 2026. This matters because mandatory issuing starts at different times for different businesses, but receiving incoming invoices starts as a basic buyer obligation.

In practice, a small company may not yet have to issue its own invoices in KSeF and still need to receive an invoice issued by a larger counterparty. Waiting until your own issuing obligation starts is not enough.

A good starting point is to decide who will access incoming invoices. If an accounting office handles documents, agree permissions, retrieval frequency and the way the client approves costs.

In the free tools provided by the Ministry of Finance, invoices are found in the invoice list. The official instruction points users to the invoice list after login, where invoices issued to the taxpayer in KSeF are available.

Commercial tools may use different labels: incoming invoices, purchase invoices, received documents, KSeF import or KSeF inbox. The meaning is the same: a view of documents where your company is the buyer or has access rights.

For accounting, the invoice list should be a working area, not just an archive. With more documents, filters by date, seller NIP, amount, processing status, seller invoice number and KSeF number become essential.

Between domestic taxpayers with a Polish NIP, a seller who issued an invoice in KSeF generally does not need to additionally deliver it outside the system. The seller may share a PDF visualization with a QR code and the KSeF number, but the PDF is not the main source of truth for a standard structured invoice.

This changes daily habits. The invoice may appear in KSeF without a separate email from the counterparty, so accounting should not wait only for mailbox messages.

There are exceptions where the invoice is made available outside KSeF in a way agreed with the buyer, for example for selected buyers such as consumers or some foreign entities. In those cases, the actual delivery method and receipt date need separate analysis.

For a standard structured invoice received by a domestic buyer with a NIP, the key date is the date KSeF assigns the KSeF number. The Ministry of Finance indicates that this is the invoice receipt date.

This means a payment period counted from invoice receipt may start before someone manually downloads the PDF. Regularly checking the invoice list is therefore part of liability control, not just administration.

Keep the seller invoice number, KSeF number, assignment date and system confirmations together. For related topics, see UPO in KSeF and Payment term for a KSeF invoice.

The Ministry of Finance reminds taxpayers to check regularly whether invoices have been received, because this affects payment deadlines. The right frequency depends on purchase volume and payment-delay risk.

A small business with a few cost invoices per month may check on selected business days. A company with recurring deliveries, logistics, catering, ecommerce or many employee cards should treat the incoming invoice list like a daily inbox.

The weakest model is checking KSeF only at month end. Invoices may already be overdue, disputed documents reach accounting too late and employee purchases are clarified from memory.

Downloading the invoice is only the beginning. The company should check whether it knows the seller, whether the purchase was ordered, whether amount and date match the contract, and whether the invoice belongs to the right branch, project or employee.

Employee purchases are especially important. The Ministry of Finance explains that when an employee physically makes a purchase on behalf of the taxpayer, employer data appears in Podmiot2 and employee data may be shown in Podmiot3 with the employee role.

If the document does not match any order, do not book it automatically. Move it into clarification, contact the seller or use the abuse-reporting path. A separate guide explains what to do when an invoice for someone else's purchase appears in KSeF.

A good procedure separates technical retrieval, business approval and accounting recognition. If these stages collapse into one click, the company can easily book an invoice nobody actually approved.

Use working statuses such as new invoice, to check, approved, waiting for correction, disputed and do not book. This prevents accounting from guessing whether an invoice is ready for VAT files and payment.

In KSeFGPT, the process can rely on invoice lists, document filtering and invoice-data analysis in one place. This is useful when one person retrieves invoices from KSeF and another decides on cost approval or payment. Read more in KSeFGPT - invoice import, export and AI analytics app.

An accounting office can help a client receive invoices from KSeF, but access to documents alone does not solve cost approval. The taxpayer should monitor received invoices and agree cooperation rules with the accountant.

The risky model is automatic booking of everything that appears in KSeF. KSeF confirms that an invoice was issued and is available to the buyer, but it does not confirm that the purchase was valid, approved or business-related.

The office should define who checks new invoices, who identifies employee purchases, who approves costs, when the client receives documents for acceptance and how disputed invoices are handled.

The first mistake is waiting for a PDF from the counterparty. In KSeF, an invoice for a domestic buyer with NIP may be effectively available in the system even if the seller sends no separate email.

The second mistake is treating retrieval as approval. Downloading the document means the company has the invoice data, but it still needs to check the purchase, seller, amounts, project and responsible person.

The third mistake is ignoring unusual invoices. An unknown seller, odd amount or document without purchase confirmation needs a pending-clarification status, not automatic booking.

If you are implementing invoice receiving in your company, start with Payment term for a KSeF invoice, What to do when an invoice for someone else's purchase appears in KSeF, UPO in KSeF and KSeFGPT - invoice import, export and AI analytics app.