Instructions

• Video instructions
• Instructions for the SEF admin module
• Instructions for connecting to SEF via API
• Generate API key
• Updated internal technical manual (02.07.2026.)
• Tax categories for electronic invoices

• Instructions for using XML files (05.06.2023.)
• Updated examples of XML files according to the UBL 2.1 standard from 11.07.2025.
• XML document validation service (UBL 2.1 standard)
• Examples of JSON files for Individual VAT records
• Electronic recording of VAT calculations in SEF
• EEO VAT in the Electronic Invoice System until September 1st

• Electronic recording of deductible tax
• Recipient notification of previous tax

Specifications

• Specification of the application interface for direct access to the Electronic invoice system
• Updated specification for the adapted implementation of the EN 16931-1 standard for Electronic invoices in domestic trade in the Republic of Serbia

Contact

• Contact form
• Useful links
• Questions and answers

Frequently asked questions

• Frequently asked questions
• Frequently Asked Questions (new)

Announcements and informations

• Events
• Webinars

News

• News

Documents on the operation of the e-invoice system

• Notifications
• SEF updates and versions

Laws

• Law on Amendments and Supplements to the Law on Electronic Invoicing
• Law on Amendments and Supplements to the Law on Electronic Invoicing
• Law on Electronic Invoicing
• Fiscalization Law
• Law on the Budget System
• Value Added Tax Law

• Law on the Settlement of Monetary Obligations in Commercial Transactions

Regulations

• Regulation on the procedure and conditions for granting and withdrawing consent to perform the activities of an information intermediary
• Regulation on the conditions and manner of storing and making available electronic invoices
• Regulation on the conditions and manner of using the invoice management system

Bylaw

• Regulations on Amendments and Supplements to the PEF - 3.10.2025.
• Regulations on Amendments and Supplements to the Regulation on Electronic Invoicing - 30.12.2024.
• Regulations on Amendments and Supplements to the Regulation on Electronic Invoicing
• Regulations on Amendments and Supplements to the Regulations on Electronic Invoicing
• Regulations on Amendments and Supplements to the Regulation on Electronic Invoicing
• Electronic invoicing regulations

Users

• List of users of the electronic invoice system

Information

• Notice on the processing of personal data

Request for consent

• Request for consent

Register of information intermediaries

• Register of information intermediaries