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TARC ESRC Legacy Status

Lead Research Organisation: UNIVERSITY OF EXETER
Department Name: Economics

Abstract

During the Legacy Status period, the Research Centre will communicate its research findings and impact-led work to the widest possible audience of international tax researchers. Dissemination takes various forms, including through the organisation of workshops, conferences and specialised capacity building seminars and builds on the significant track record of international events organised by TARC which demonstrates that the Research Centre has developed the expertise required to continue to do so successfully. The Research Centre will also build additional capacity through engagement with researchers and policymakers from Revenue Authorities and Government bodies in developing countries, and particularly Africa. Assisting developing countries in their efforts to improve revenue mobilization and achieve sustainable development has been a key research and impact priority of the Centre. Through TARC's continuing programme of specialised seminars given the Revenue Authorities in developing countries, knowledge transfer is achieved and much-needed capacity building is enhanced. The Research Centre will also broaden its extensive research and policy network of International Fellows, and its successful active visitors programme. This proposed activity will contribute to maximising the international visibility of the Centre and to boosting global knowledge transfer, thereby enhancing TARC's reputation as an international hub where ideas are articulated and developed.

TARC has already built up an excellent network of stakeholders - including but not restricted to: the Tax Administration Diagnostic Assessment Tool (TADAT), International Monetary Fund; World Bank: OECD; Independent Authority of Public Revenue of the Hellenic Republic; Rwanda Revenue Authority; Bulgarian National Revenue Authority (BNRA): Welsh Government: African Tax Administration Forum (ATAF); Her Majesty's Revenue and Customs; the Directorate General of Taxation of Cameroon; Namibia Revenue Authority: the Digital Economy Taxation Foundation and the Vienna University of Economics and Business - and will be developing this engagement further in order to disseminate TARC's research and further policy engagement and impact. These collaborations have had research and policy impact. The collaboration with BNRA has contributed to significant revenue gain for Bulgaria and more efficient targeting of tax audits, to the extent that it generated an impact statement from the BNRA to the OECD which emphasise the impact: 'To combat VAT fraudulent transactions the Bulgarian National Revenue Agency (BNRA) for over ten years has been using a two-step process. This two-stage process discretely combines data analytics with operational knowledge. As such it is highly labour-intensive as requires input from the most experienced BNRA tax professionals In 2019 a co-operation was established between the BNRA and the Tax Administration Research Centre (University of Exeter Business School), and University College London. The main objective of this co-operation was to develop a scalable predictive model, which automatically identifies missing traders. A key aspect of the methodological approach developed is that the network structure of all VAT transactions (through sales/purchases invoices) provides important information which can (and should) be used to identify abnormal VAT transactions through the production chain. In early 2021, BNRA started implementing the predictive model, partially utilising the information structure emerging from the rich VAT transactions data collected. The first results have shown that such an approach can achieve both faster identification of fraudulent VAT transactions, but also a significantly higher proportion of identified real missing traders. This means the time a missing trader begins its fraudulent activities and the time it is identified by BNRA is on average reduced by 15%. Importantly, the predictive model can now identify fraudulent transactions

Publications

10 25 50

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Kotsogiannis C (2025) E-invoicing, tax audits and VAT compliance in Journal of Development Economics

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Kotsogiannis C (2024) Symposium on Fiscal Capacity, Tax Compliance, and Development in CESifo Economic Studies

 
Description The award is still on going as is the research that is being done at the Research Centre. In a research project that has been ongoing for two years now, we have identified important effects in tax audits. More specifically, in a research project undertaken with the assistance of the Independent Authority for Public Revenues, we have found that tax compliance responses vary by firm and audit characteristics, including inspection type, information source, and audited period. We have also found that different types of audits have similar effects, while audits mandated by external to the revenue authority sources have little impact on compliance, and that tax audits improve compliance when they are ongoing, at the time of filling. These are important finding that provide evidence necessary for the effective design of tax audits.
Exploitation Route The findings of the research will help tax authorities in their design of their tax audits.
Sectors Government

Democracy and Justice

 
Description The findings on the tax audits are being evaluated by tax authorities. Rwanda has already done this, and the research undertaken in collaboration with the Rwanda Revenue Authority, has fed into the audit policy of the organisation in 2024.
First Year Of Impact 2024
Impact Types Economic

Policy & public services

 
Description Direct Stimulus Payments to Individuals in the COVID-19 Pandemic: Collaboration with Athens University of Economics and Business 
Organisation Athens University of Economics and Business
Country Greece 
Sector Academic/University 
PI Contribution Analysis and interpretation of survey data; planning, organisation of activities, including presentations and workshops.
Collaborator Contribution Conducted survey of 1014 Greek households/taxpayers; planning; assisting in organisation of 2022 events
Impact 'Direct Stimulus Payments to Individuals in the Covid-19 Pandemic' is a project led by Professors Plutarchos Sakellaris from the Athens University of Economics and Business, and Christos Kotsogiannis from the Tax Administration Research Centre, University of Exeter Business School. It is supported by the Hellenic Foundation for Research and Innovation and runs from November 2021 to November 2022. This project aims to understand households' Marginal Propensity to Consume (MPC) out of transitory income, and how this has changed during the pandemic. It is based on a survey of 1014 Greek households/taxpayers, which has produced a wealth of data. TARC has 3 events planned to date as part of this project: 1] Academic workshop, 24th May - a virtual event, with presentations by invitation and through a call for papers 2] Policymaker Round Table, 30th June - a half day event with a round table and presentations 3] Academic workshop, 24th or 25th August - a virtual event, with presentations by invitation and through a call for papers
Start Year 2021
 
Description - International forum on carbon pricing 
Form Of Engagement Activity A formal working group, expert panel or dialogue
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Policymakers/politicians
Results and Impact This Forum was the pre-COP29 meeting and took place in Baku, Azerbaijan. The focus of the forum was on the design and implementation of Carbon Adjustment Mechanisms.
Year(s) Of Engagement Activity 2024
URL https://www.iota-tax.org/events/2024/international-forum-on-carbon-pricing
 
Description CIAT General Assembly 
Form Of Engagement Activity A formal working group, expert panel or dialogue
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Policymakers/politicians
Results and Impact TARC participated in the CIAT 58th General Assembly on the Prevention and conflict resolution mechanisms and promotion of voluntary compliance
Foz do Iguaçu, Brazil, April 23 - 25, 2024.
Year(s) Of Engagement Activity 2024
URL https://www.ciat.org/58a-ciat-general-assembly/?lang=en
 
Description CIAT Technical Conference 2024 
Form Of Engagement Activity A formal working group, expert panel or dialogue
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Policymakers/politicians
Results and Impact Technical conference organised by CIAT with high-level participants from over 40 countries.
Year(s) Of Engagement Activity 2024
URL https://www.ciat.org/ciat-2024-technical-conference/?lang=en
 
Description Capacity building visit to Rwanda Revenue Authority 
Form Of Engagement Activity A formal working group, expert panel or dialogue
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Policymakers/politicians
Results and Impact TARC visited the Rwanda Revenue Authority to present collaborative work between TARC and RRA.
Year(s) Of Engagement Activity 2024
 
Description Conference participation 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Participation to CRETE conference
Year(s) Of Engagement Activity 2023
URL https://www2.aueb.gr/conferences/Crete2023/
 
Description Engagement Visit to HMRC 
Form Of Engagement Activity A formal working group, expert panel or dialogue
Part Of Official Scheme? No
Geographic Reach National
Primary Audience Policymakers/politicians
Results and Impact Engagement visit to HMRC.
Year(s) Of Engagement Activity 2023
 
Description Engagement Visit to OECD, Paris 
Form Of Engagement Activity A formal working group, expert panel or dialogue
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Policymakers/politicians
Results and Impact Participation to OECD FTA Assembly in Paris to engage with FTA members.
Year(s) Of Engagement Activity 2023
 
Description Invited panellist, DET Network 
Form Of Engagement Activity A formal working group, expert panel or dialogue
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Policymakers/politicians
Results and Impact Participation at DET Network
Year(s) Of Engagement Activity 2023
 
Description Meeting hosted by the Asian Development Bank 
Form Of Engagement Activity A formal working group, expert panel or dialogue
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Policymakers/politicians
Results and Impact An event to exchange knowledge on AI and Tax Compliance. The event was hosted by the Asian Development Bank.
Year(s) Of Engagement Activity 2025
 
Description OECD Working Group on Trustworthiness of AI in Tax Administration 
Form Of Engagement Activity A formal working group, expert panel or dialogue
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Policymakers/politicians
Results and Impact TARC participates in an OECD Working Group tasked to develop a set of principles for the trustworthiness of AI in Tax Administration.
Year(s) Of Engagement Activity 2024
 
Description Panel discussion on competitiveness in the midst of turmoil 
Form Of Engagement Activity A formal working group, expert panel or dialogue
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Policymakers/politicians
Results and Impact Panel discussion on the impact of COVID-19 on competitiveness.
Year(s) Of Engagement Activity 2023
 
Description Panel discussion on economic policy responses to the COVID-19 
Form Of Engagement Activity A formal working group, expert panel or dialogue
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Panel discussion on how economies (challenges and opportunities) reacted to COVID-19
Year(s) Of Engagement Activity 2023
 
Description Panel discussion on modern perspective on tax policy 
Form Of Engagement Activity A formal working group, expert panel or dialogue
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Panel discussion on tax policy with an international audience of tax epxerts.
Year(s) Of Engagement Activity 2023
 
Description Participation into the FTA Meeting of OECD 
Form Of Engagement Activity A formal working group, expert panel or dialogue
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Policymakers/politicians
Results and Impact Participated in the Forum on Tax Administration (FTA) in Athens organised by the Independent Authority for Public Revenue under the auspicies of the OECD. The FTA brings together tax commissioners and tax administration officials from over 50 OECD and non-OECD economies. The FTA is a forum through which tax administrators share knowledge, undertake research and develop new ideas to enhance tax administration around the world.
Year(s) Of Engagement Activity 2024
 
Description Participation to UN-Wider conference 
Form Of Engagement Activity A formal working group, expert panel or dialogue
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Policymakers/politicians
Results and Impact Domestic revenue mobilization allows governments to finance critical public goods necessary to meet
the goals of the 2030 Agenda for Sustainable Development. However, developing countries continue
facing significant challenges in mobilizing domestic resources. UNU-WIDER's Domestic Revenue
The 2023 WIDER Development Conference brings together experts from research and policy
networks from around the world to discuss and debate the findings and policy recommendations of
UNU-WIDER's Domestic Revenue Mobilization (DRM) research programme. The conference will
support policy processes in partner countries by sharing new knowledge on how domestic revenue
mobilization can be enhanced and how it can combat poverty.
Year(s) Of Engagement Activity 2023
URL https://www.wider.unu.edu/sites/default/files/Events/PDF/Programme/2023%20WIDER%20Development%20Conf...
 
Description Plenary talk at CIAT Technical Conference 
Form Of Engagement Activity A formal working group, expert panel or dialogue
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Policymakers/politicians
Results and Impact TARC's latest research on identification of fraudulent transaction was presented at the 2023 CIAT technical conference to policymakers from Latin America.
Year(s) Of Engagement Activity 2023
URL https://www.ciat.org/ciat-2023-technical-conference/?lang=en
 
Description Research and collaboration visit, University of Gothenburg 
Form Of Engagement Activity A formal working group, expert panel or dialogue
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Visit to the Global Governance Institute, University of Gothenburg, May 13-17, 2024, to engage in a collaboration dialogue.
Year(s) Of Engagement Activity 2024
 
Description Round table discussion 
Form Of Engagement Activity Participation in an activity, workshop or similar
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Round table discussion with international contributors discussing 'Economic Policy Responses to the COVID-19 Pandemic and Other Crises'.
Year(s) Of Engagement Activity 2023
URL https://www.exeter.ac.uk/research/centres/tarc/collaboration/directstimuluspayments/
 
Description Visit to Cambridge University 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach National
Primary Audience Professional Practitioners
Results and Impact Research talk to University of Cambridge
Year(s) Of Engagement Activity 2023
 
Description Visit to IAPR 
Form Of Engagement Activity A formal working group, expert panel or dialogue
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Policymakers/politicians
Results and Impact Engagement visit to the Independent Authority for Public Revenue, Greece
Year(s) Of Engagement Activity 2024
 
Description Webinar on taxation of cryptoassets 
Form Of Engagement Activity Participation in an activity, workshop or similar
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Webinar on taxation of cryptoassets
Year(s) Of Engagement Activity 2023
 
Description Working group participation on AI (challenges and opportunities) 
Form Of Engagement Activity A formal working group, expert panel or dialogue
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Policymakers/politicians
Results and Impact A series of meetings of working group organised under the OECD umbrella discussing challenges and opportunities for governments of AI
Year(s) Of Engagement Activity 2024
 
Description Workshop on AI, audit and fintech 
Form Of Engagement Activity Participation in an activity, workshop or similar
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact The use of digital technologies in tax and financial services has come far over the last ten years while there has been little attention on how it empowers and impacts a diverse society. The workshop will bring together experts in tax administration, fintech, economic policy design, machine learning, AI, early career researchers and PhD students. It is co-organized by Queen Mary University of London (Centre for Commercial Law Studies, Institute of Tax Law), University of Exeter (Tax Administration Research Centre (TARC)) and the University of Surrey (Surrey Institute for People-Centred Artificial Intelligence, Surrey Law and Technology Hub, Sustainable and Explainable Fintech Centre, Surrey Business School).
Year(s) Of Engagement Activity 2023
URL https://www.surrey.ac.uk/events/20230622-turing-network-ai-tax-audit-and-fintech-workshop