This report looks at effective e-service provision by tax administrations, summarising eight critical areas, and explores big data management and portals, as well as natural systems. It highlights key opportunities, looking at how these emerging technologies can be best used by tax administrations.

This report is the ninth edition of the OECD's Tax Administration Series. It provides internationally comparative data on aspects of tax systems and their administration in 59 advanced and emerging economies.

This technical note is the first of three addressing information technology (IT) themes and issues relevant to tax administrations. This note focuses on the use of technology in tax administrations and how to develop an information technology strategic plan (ITSP). It is intended for tax administrations that are largely manual or have outdated legacy IT systems. The second note addresses how to select an IT system for core tax administrations functions. And the third note covers implementation of a commercial-off-the-shelf (COTS) system. These technical notes are primarily for use by tax administrations that have no technology to manage their core tax processes, or their technology is limited and outdated. These notes focus on core tax functions and do not address other business systems (e.g., payroll, finance, document, and asset management systems).

This comparative analysis report, the second in a series, is part of ADB’s regional research and development project on tax administration that analyzes the administrative frameworks, functions, and performance of 21 economies in Asia and the Pacific. The initial version of this report was published in 2014. The primary objective of the series is to motivate governments and revenue officials by sharing knowledge of important developments and trends in tax administration practice and performance, and to identify opportunities to enhance the operation of their tax systems.

This technical note is the second of three addressing information technology (IT) themes and issues relevant to tax administrations. This note addresses how to select a suitable IT system for core tax administration functions. Note one covers the use of IT in tax administrations and how to develop an information technology strategic plan (ITSP). The third note focuses on implementation of a commercial-off-the-shelf (COTS) system. These technical notes are primarily for tax administrations that have no technology to manage their core tax processes, or their technology is limited and outdated. These notes focus on core tax functions and do not address other business systems (e.g., payroll, finance, document, and asset management systems).

This study introduces the concept of “Tax Compliance by design”. It describes how revenue bodies can exploit developments in technology and the ways in which modern SMEs organise themselves to incorporate tax compliance into the systems businesses use to manage their financial affairs.

The challenges and opportunities of new technologies in the tax field Technological developments induced major reforms in the regulatory international and domestic tax landscapes as well as in the developments in the use of technology by tax administrations and taxpayers. New technology, especially the innovations in virtual asset-light cross-border business organizations, data analytics, service and process automation, on one hand, disrupted the well-established legal tax principles and rules and, on the other, stimulated informed data-driven and structured solutions in tax compliance. Technological advances affected nearly every area and each aspect of taxation: Direct tax regulations, indirect tax law, and tax procedures including tax compliance, and tax control functions. International organizations such as the Organization for Economic Co-operation and Development (OECD), the United Nations (UN), and the European Commission as a supranational organization fostered critical legislative reforms and proposals among which are the OECD Two-Pillar Solution to Address the Tax Challenges Arising from Digitalisation of the Economy, Article 12B of the UN Model Tax Convention to tax automated digital services, new rules for tracing transfers of crypto-assets in the EU, as well as the EU ́s VAT e-commerce package and "VAT in the Digital Age" package. While these proposals aim to address a wide range of the benefits and challenges of Economy 4.0, certain questions arise concerning the consistency of the legislative developments with their initial objectives, the appropriateness of the legal form for the economic substance of the regulated relations for the effectiveness of the regulations as well as their coherence. This volume contains a collection of scientific chapters on the general topic "Tax and Technology" that were successfully completed by the 2022/2023 LL.M. graduates of the Institute for Austrian and International Tax Law, WU. The volume is divided into three parts that contain the contributions dealing with the impact of the technology on international tax law, indirect tax law, and procedural law. Each chapter provides an in-depth analysis of a unique research question aiming to innovatively contribute to the current debate and develop a practical approach for implementing the findings.