How to prepare for e-Invoicing?

What will e-invoicing mean for Slovak companies and organizations? And how can they prepare for this change?

e-INVOICING 2027

From 2027, electronic invoicing will become part of everyday operations for Slovak companies and organisations. This is not merely a change in invoice format. The new invoicing model will affect accounting, internal processes, data flows, as well as information and ERP systems. So what will change compared with today, who will be affected, and what can you start checking now?

13 October 2026 Hotel Bratislava, Seberíniho 9, Bratislava e-INVOICING IN PRACTICE

Electronic invoicing

What will change for you compared with today?

Today, a company will often create an invoice in its accounting software, save it as a PDF and send it by email. The recipient then opens the document and processes the data in their accounting or ERP system.

With electronic invoicing, what matters most will no longer be how an invoice looks on screen. The key element will be structured data that systems can exchange and process automatically.

Today

You create an invoice, save it for example as a PDF, and send it by email. On the recipient’s side, a person or a system must then process the data contained in the document.

With e-Invoicing

The invoicing or accounting system creates structured data, which is delivered electronically to the recipient’s system and can then proceed to validation, matching and accounting.

The biggest difference will not be how the invoice looks, but how its data is transferred and processed between systems.

What will need to be addressed

issuing an electronic invoice
the method of electronic delivery
structured data and XML
integration with accounting or ERP systems
invoice validation, matching and posting

What you need to check

readiness of your accounting and ERP systems
how invoices are issued and received
your software provider’s implementation plan
where data is currently re-entered manually
who will be responsible for preparation within your company

Official information on electronic invoicing is also available on the website of the Financial Administration of the Slovak Republic .

Practical impact

Does e-Invoicing apply to you?

The change will not look the same in every company. A self-employed professional using simple accounting software will require a different level of preparation from an organisation that uses an ERP system, invoice approval workflows and multiple internal applications.

Self-employed professional or small business Above all, you need to know how the software you currently use to issue or record invoices will support e-Invoicing.

Accountant The change will affect document receipt, data validation, matching and the way invoices enter your accounting process.

Owner or managing director You need to be clear about who will prepare the systems, who will communicate with the software provider, and where internal processes need to change.

Medium-sized or large company Preparation may involve finance, accounting, IT, ERP, approval workflows and other internal systems.

Public-sector organisation It will be important to align the new invoicing model with existing systems, control procedures and internal workflows.

A simple example

How does a single e-Invoice move through the entire process?

The easiest way to explain the change is to follow a single invoice. Instead of a standalone PDF document, the focus shifts to data that information systems can process further.

The invoice is created

The company creates it in its accounting, invoicing or ERP system.

The data is sent

The system prepares the electronic invoice data and sends it to the recipient using the designated delivery method.

The recipient’s system receives the invoice

The data enters the environment in which the recipient processes its invoices.

Validation and posting follow

The invoice can then proceed through validation, matching, approval and final posting.

For companies, the key question will therefore not only be whether they can issue an invoice, but also what happens to it after it is sent and received.

Without the technical jargon

Three terms you will hear in connection with e-Invoicing

Electronic invoicing comes with a number of technical terms. However, you do not need to be an IT specialist to understand the basics.

XML

A format in which data is structured so that an information system can understand and process it. To a person, it may therefore not look like a traditional PDF invoice.

Peppol

A network and set of rules used for the electronic exchange of business documents between organisations and information systems.

ERP

An enterprise information system in which an organisation can manage areas such as finance, accounting, procurement, orders or invoicing.

Preparation

What can you check today?

You do not need to know every technical detail to start preparing. A useful first step is to map how an invoice is created in your organisation and what happens to it afterwards.

Identify which accounting, invoicing or ERP system you use. If you use several systems, also map where data is transferred between them.
Ask your software provider how it is preparing for e-Invoicing. You need to know what will be supported and what will need to be configured or changed.
Identify who currently issues, receives, checks and approves invoices. These are the points where workflows may change.
Identify where data is still re-entered manually. Electronic invoicing may significantly change processes in which data is transferred from one system to another.
Decide who will be responsible for preparation within your company. In a larger organisation, this may involve not only accounting but also IT, finance or the ERP system administrator.

e-INVOICING at a glance

How to prepare for e-Invoicing

The sooner an organisation understands its specific scenario, the easier it will be to prepare its systems and workflows before the new requirement takes effect.

TODAY

Assess your current situation

Review the software you use, your current invoicing process and the person responsible for preparation.

2026

Prepare and test the process

Set up issuing, receipt, validation and posting, and address any necessary changes with your software provider.

1. 1.
2027

New invoicing model

The organisation has a process in place for issuing, receiving and processing electronic invoices.

Event

e-Invoicing in Practice: from rules to real-world workflows

The main challenge will not simply be understanding that invoicing is changing. What matters is translating the new rules into specific accounting processes and the systems companies use every day.

This is precisely the practical challenge addressed by the event e-Invoicing in Practice , which will take place on 13 October 2026 at Hotel Bratislava.

Rather than looking at legislation in isolation, the event will show the entire process: how an electronic invoice is created, how it is sent, what happens after it is received, and how it can ultimately enter the accounting system.

The event will bring together people working with accounting, financial software, ERP systems and digitalisation. Participants will therefore see the topic not only from the perspective of rules and requirements, but also through the eyes of those responsible for implementing them in real organisational environments. View the event speakers.

Who is the event for?

For accountants, finance managers, company owners and managing directors, public-sector professionals, IT and ERP specialists, and everyone responsible for preparing e-Invoicing-related processes within their organisation.

Event programme

From the fundamentals to real-world workflows

The programme is structured so that participants first understand what electronic invoicing changes and then see how the same process works across different types of organisations and information systems.

The fundamentals and four steps of e-Invoicing

From the basic principle to the complete lifecycle of an electronic invoice.

what is changing and why preparation matters
issuing an electronic invoice
sending and electronic delivery
receipt, validation and posting

How e-Invoicing will work in different organisations

The same change may have different practical implications depending on the size of the company, the systems it uses and the way invoices are processed.

self-employed professional and small business
medium-sized and large company
local government and public administration

Automation, accounting systems and ERP

The third section will focus on integrating electronic invoicing with real-world systems and automating document processing.

integration of accounting systems and data
processes within software providers
e-Invoicing in ERP environments
from document receipt to automated posting

View the full programme

Afternoon practical session

Practical masterclasses

The entire afternoon session will be dedicated to masterclasses. Using specific model scenarios, participants will work through the complete process, from issuing and sending an invoice to receiving, validating and posting it.

the complete e-Invoicing process, step by step
workflows in accounting and ERP systems
model scenarios for self-employed professionals, accountants and companies

public-sector scenarios
identifying manual data entry, errors and delays
questions to address with your software provider

The aim of the masterclasses is not only to explain what e-Invoicing means, but to show participants how the upcoming change will affect their day-to-day work.

Practical outcome

What should you know after the event?

The outcome should be more than simply knowing that electronic invoicing is coming. The key is to leave with a clearer understanding of what your organisation specifically needs to prepare.

how e-Invoicing differs from an invoice sent as a PDF
how issuing, sending, receipt, validation and posting will work
what you need to check in your accounting or ERP system
which questions to ask your software provider
which internal processes may need to be adjusted
where electronic invoice processing can reduce manual data entry

e-INVOICING IN PRACTICE
13 October 2026 · Hotel Bratislava · Bratislava