The billionaire tax – a (modest) proposal for the 21st century

As recent projections warn that we’re off-track to reduce inequality for the 2030 deadline of the Sustainable Development Goals, the pressing need for equitable tax systems takes center stage at the 28th WIDER Annual Lecture on 4 September 2024. Esteemed economist Gabriel Zucman examines how disparities of current tax structures guarantee this inequality is persistent due to advantages enjoyed by the ultra-wealthy.

luxurious meal versus poor meal
Uganda TIN registration form, calculator, currency, pen. Image: Kalungi Kabuye / UNU-WIDER

WIDER Seminar Series

The WIDER Seminar Series has returned! Beginning in March, join either online or in person for the 2024 season of this exciting event series to hear the latest research in development.

84 past and upcoming events

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Project workshop
Workshop on the MicroZAMOD update in Zambia

Members of the International Labour Organization, Zambia Institute for Policy Analysis and Research (ZIPAR), UNU-WIDER's SOUTHMOD team, and the Zambia Statistics Agency (ZAMSTATS) meet in Livingstone, Zambia to further develop Zambia's tax and...

Mon, 27 May 2024Thu, 30 May 2024
Protea Hotel, Livingstone, Zambia, Zambia
Past event
Project workshop
2023 SOUTHMOD workshop

On 5 September 2023, participants from six different time zones gather for a hybrid SOUTHMOD workshop to exchange experiences and knowledge on tax-benefit microsimulation modeling in developing countries. This is the first in-person SOUTHMOD workshop...

Tue, 5 September 2023
Oslo, Norway
Past event
Project workshop
SA-TIED technical workshop on the strengths and limitations of long-term structural models
Mon, 28 November 2022
Development Bank of South Africa Head Office in Midrand, 1258 Lever Rd, Headway Hill, Midrand, South Africa
Past event
Project workshop
Structural change in developing countries – ETD project workshop

On 21 November 2022, commissioned research from the Economic Transformation Database (ETD) project is presented at the first of three workshops. The research aims to improve our understanding of structural transformation —how it varies, why it varies...

Mon, 21 November 2022
Online, Helsinki, Finland
Past event
Project workshop
IGM course on poverty, inequality and growth

On 1-3 August 2022, the Inclusive growth in Mozambique (IGM) programme organizes a short course on poverty, inequality and growth, with a focus on Mozambique, for the Ministry of Economy and Finance of Mozambique (MEF). The training consists of an...

Mon, 1 August 2022Wed, 3 August 2022
Online, Maputo, Mozambique
Past event
Project workshop
IGM course on poverty analysis, inequality and growth

On 27–29 July 2022, the Inclusive growth in Mozambique (IGM) programme organizes a course on recent trends in poverty, inequality and growth at the University of Eduardo Mondlane (UEM). The training is given by Vincenzo Salvucci, Assistant Professor...

Wed, 27 July 2022Fri, 29 July 2022
Online, Maputo, Mozambique
Past event
Project workshop
2022 SOUTHMOD workshop

On 18-19 July 2022, 35 participants from six different time zones and eleven different countries gather for a two-day virtual SOUTHMOD workshop to exchange experiences and knowledge on tax-benefit microsimulation modeling in developing countries. The...

Mon, 18 July 2022Tue, 19 July 2022
Online, Finland
Past event
Project workshop
World Income Inequality Database (WIID) authors' workshop

UNU-WIDER's World Income Inequality Database research project holds a virtual workshop that brings together researchers selected under the project's open call for research proposals. The selected papers fulfill a project aim to improve understanding...

Mon, 4 July 2022Tue, 5 July 2022
Virtual, Finland
Past event
Project workshop
Author workshop on detecting and countering illicit financial flows

This project workshop brings together authors that were selected to produce research papers for the Detecting and countering illicit financial flows project, to discuss their papers. The workshop takes place online. Following the second call for...

Wed, 22 June 2022Thu, 30 June 2022
Online, Denmark
Past event
Project workshop
Workshop on Institutional legacies of violent conflict
Thu, 12 May 2022Fri, 13 May 2022
UNU-WIDER, Katajanokanlaituri 6b, Helsinki, Finland
Past event
Project workshop
Work-in-progress meeting on tax research collaboration in Tanzania

As part of the Building up efficient and fair tax systems – lessons based on administrative tax data project, a work-in progress meeting was held in-person between UNU-WIDER and the Tanzania Revenue Authority (TRA) in Dar es Salaam 9 May 2022. The...

Mon, 9 May 2022
TRA Headquarters, Dar es Salaam, Tanzania
Past event
Project workshop
Workshop: Data for tax revenue mobilisation
Thu, 28 April 2022
Online, Helsinki , Finland
Past event
Project workshop
IGM training on GIS and use of satellite data

The use of geographic information systems (GIS) in social sciences is becoming increasingly important for understanding complex issues with a spatial dimension. This short course, organized under the Inclusive growth in Mozambique (IGM) programme...

Tue, 5 April 2022Fri, 8 April 2022
Online, Maputo, Mozambique
Past event
Project workshop
IGM Basic STATA training

The Inclusive growth in Mozambique (IGM) programme organizes a five-day basic course on STATA during 28 March and 1 April 2022. STATA is a statistical analysis software used to analyse data patterns. The course aims to introduce participants to the...

Mon, 28 March 2022Fri, 1 April 2022
Online, Maputo, Mozambique
Past event
Project workshop
IGM training of IIM survey enumerators

During 21–25 March 2022, the Inclusive growth in Mozambique (IGM) programme organizes a training for survey enumerators hired to carry out the 2022 round of the Survey of Mozambican Manufacturing Firms (IIM 2022). The training consists of a detailed...

Mon, 21 March 2022Fri, 25 March 2022
Online, Maputo, Mozambique
Past event
Project workshop
IGM training on designing enterprise surveys training

The Inclusive growth in Mozambique (IGM) programme organizes, on 17 March 2022, a one-day training on designing enterprise surveys. Topics covered include sampling of formal and informal firms, survey design (finding and measuring variables of...

Thu, 17 March 2022
Online, Maputo, Mozambique
Past event
Project workshop
Domestic savings workshop for authors
Wed, 16 March 2022Thu, 17 March 2022
Online, Nairobi, Kenya
Past event
Project workshop
Work-in-progress meeting on tax-benefit microsimulation model for Rwanda

As part of the SOUTHMOD - simulating tax and benefit policies for development project, a work-in progress meeting is held online between UNU-WIDER and the Rwanda Revenue Authority (RRA) on 14 March 2022. The objective of the workshop is to present...

Mon, 14 March 2022
Online, Rwanda
Past event
Project workshop
Addressing group-based inequalities work in progress workshop

The UNU-WIDER project Addressing group-based inequalities holds a virtual workshop to discuss research on 'Experiences of Reform', the component of the project which offers a comparative assessment of worldwide efforts to reduce group-based...

Wed, 15 December 2021
Online, Finland
Past event
Project workshop
Work-in-progress meeting on tax research collaboration in Tanzania

As part of the Building up efficient and fair tax systems – lessons based on administrative tax data project, a work-in progress meeting was held online between UNU-WIDER, Tanzania Revenue Authority (TRA) and Department of Economics of the University...

Fri, 10 December 2021
Online, Tanzania
Past event
Project workshop
Work-in-progress meeting on tax research collaboration in Uganda

As part of the Building up efficient and fair tax systems – lessons based on administrative tax data project, a work-in progress meeting was held online between UNU-WIDER and Uganda Revenue Authority (URA). The topics discussed in this meeting...

Tue, 7 December 2021Wed, 8 December 2021
Online, Kampala, Uganda
Past event
Project workshop
COVID-19 impact and policy response across Indian States

The researchers under this component of The state and statebuilding in the Global South – international and local interactions project meet to discuss ongoing research on 'COVID-19 and the state —comparative experiences in the Global South'...

Thu, 2 December 2021Fri, 3 December 2021
Online, Finland
Past event
Project workshop
COVID-19 and the State —comparative experiences in the Global South
Mon, 22 November 2021Tue, 23 November 2021
Online, Finland
Past event
Project workshop
WWII and the legacies of fascism in Europe

As part of the UNU-WIDER project Institutional legacies of violent conflict, project contributors under Theme A1: WWII and the legacies of fascism in Europe come together on 4 November 2021 at 3pm to present and discuss their research papers in...

Thu, 4 November 2021
Online, Finland
Past event
Project workshop
SOUTHMOD modelling mini-retreat

On 14 and 18 October 2021, 15 researchers from different countries gathered together for a SOUTHMOD mini-retreat. The participants discussed different aspects of the SOUTHMOD tax-benefit microsimulation software and examined possible changes to the...

Thu, 14 October 2021Mon, 18 October 2021
Online, Finland
Past event
Project workshop
Work-in-progress meeting on tax research collaboration in Zambia

As part of the Building up efficient and fair tax systems – lessons based on administrative tax data project, a work-in progress meeting was held online between UNU-WIDER, Zambia Institute for Policy Analysis & Research (ZIPAR) and Zambia Revenue...

Tue, 12 October 2021
Online, Lusaka, Zambia
Past event
Project workshop
Workshop for the @Equal project
Tue, 21 September 2021
Online, United States
Past event
Project workshop
Workshop on detecting and countering illicit financial flows

This project workshop brings together authors that were selected to produce research papers for the Detecting and countering illicit financial flows project, to discuss the first drafts of the papers. The workshop takes place online. Following the...

Wed, 1 September 2021Thu, 2 September 2021
Online, Copenhagen, Denmark
Past event
Project workshop
Project workshop: Fiscal states – the origins and development implications
Tue, 15 June 2021Tue, 22 June 2021
Online, Helsinki, Finland
Past event
Project workshop
2021 SOUTHMOD workshop

On 24-25 May 2021, 35 participants from six different time zones and eleven different countries gathered for a two-day virtual SOUTHMOD workshop to exchange experiences and knowledge on tax-benefit microsimulation modeling in developing countries...

Mon, 24 May 2021Tue, 25 May 2021
Online, Helsinki, Finland
Past event
Project workshop
Tax and development workshop

The Tax and Development workshop will bring together researchers, tax experts and practitioners to exchange experiences on using administrative tax data in their respective countries for research purposes. The event will be attended by 40 experts...

Tue, 11 May 2021
Online, Helsinki, Finland
Past event
Project workshop
3rd Annual workshop: Inequality and governance in unstable democracies – the mediating role of trust
Thu, 22 April 2021Fri, 23 April 2021
Online, Maputo, Mozambique
Past event
Project workshop
Domestic savings mini workshop for country case authors

This project workshop brought together the authors responsible for the country case studies of The domestic savings shortfall in developing countries – what can be done about it? project. The country studies will be included in a book volume on...

Wed, 17 March 2021
Past event
Project workshop
Detecting and countering illicit financial flows - 2nd network meeting

As part of the Detecting and countering illicit financial flows project, we have established an informal network of leading international researchers working on the topic of international tax and illicit financial flows. The second meeting of the...

Wed, 3 March 2021
Online, Denmark
Past event
Project workshop
Deals and Development in Fragile and Conflict-affected States

On 24-25 February 2021, UNU-WIDER and the UK’s Foreign, Commonwealth & Development Office (FCDO) will hold a policy innovation lab titled Deals and Development in Fragile and Conflict-Affected States (FCAS).

Wed, 24 February 2021Thu, 25 February 2021
Online, Finland
Past event
Project workshop
Women's work – Routes to social and economic empowerment
Thu, 19 November 2020Thu, 3 December 2020
Virtual, Helsinki, Finland
Past event
Project workshop
Detecting and countering illicit financial flows - 1st network meeting
Thu, 12 November 2020
Online, Denmark
Past event
Project workshop
Transforming informal work and livelihoods — authors' workshop
Thu, 12 November 2020Fri, 13 November 2020
Zoom, Helsinki, Finland
Past event
Project workshop
Extractive Industries: Taxation and Revenues
Thu, 5 November 2020
Zoom, Finland
Past event
Project workshop
Transforming informal work and livelihoods — authors' workshop
Fri, 23 October 2020
Zoom, Helsinki, Finland
Past event
Project workshop
Clientelist politics and economic development
Thu, 15 October 2020Fri, 16 October 2020
Virtual, Helsinki , Finland
Past event
Project workshop
2020 SOUTHMOD workshop
Wed, 24 June 2020Thu, 25 June 2020
Past event
Project workshop
Inequality and governance in unstable democracies – the mediating role of trust: 2nd Annual Workshop

More than 30 participants attended the 2nd annual workshop for ‘Trust and Governance’ project, held virtually on the 16th and 17th April 2020. The workshop was initially set to be held in Colombia but had to be moved to a virtual environment through...

Thu, 16 April 2020Fri, 17 April 2020
Virtual (Zoom),
Past event
Project workshop
Virtual workshop on the changing nature of work and inequality

The changing nature of work and inequality project will hold a workshop online to discuss research in progress on 24-26 March via Zoom. The original workshop to be convened in Tunis, Tunisia has been cancelled due to the COVID-19 pandemic. Country...

Tue, 24 March 2020Thu, 26 March 2020
Online, United States
Past event
Project workshop
Training on data cleaning and analysis in Myanmar

As part of the research collaboration with the Central Statistical Organization (CSO) of the Ministry of Planning and Finance of Myanmar, UNU-WIDER and the Development Economics Research Group (DERG) of the University of Copenhagen, two workshops...

Mon, 18 November 2019Fri, 22 November 2019
Central Statistical Organization, Nay Pyi Taw, Myanmar (Burma)
Past event
Project workshop
Turning the tide on inequality — Work in progress meeting
Fri, 8 November 2019
Protea Hotel, Loftus Park , 416 Kirkness Street, Pretoria, South Africa
Past event
Project workshop
Public revenue mobilization for inclusive development — Work in progress meeting
Wed, 6 November 2019
Protea Hotel, Loftus Park , 416 Kirkness Street, Pretoria, South Africa
Past event
Project workshop
Myanmar Social Accounting Matrix Development

As part of the research collaboration with the Central Statistical Organization (CSO) of the Ministry of Planning and Finance of Myanmar, UNU-WIDER and the Development Economics Research Group (DERG) of the University of Copenhagen, a workshop will...

Mon, 4 November 2019Mon, 18 November 2019
CSO, Nay Pyi Taw, Myanmar (Burma)
Past event
Project workshop
Social mobility in developing countries — concepts, methods, and determinants
Thu, 5 September 2019Fri, 6 September 2019
UNU-WIDER, Katajanokanlaituri 6 B , Helsinki, Finland
Past event
Project workshop
Building a Social Accounting Matrix for Myanmar: Hands-on experience workshop

A two-week training course took place at the Development Economics Research Group (DERG) at the University of Copenhagen to develop a prototype 2015 Social Accounting Matrix (SAM) for Myanmar.

Mon, 29 July 2019Fri, 9 August 2019
Development Economics Research Group (DERG) at the University of Copenhagen, Copenhagen, Denmark
Past event
Project workshop
Third training round on ECUAMOD – a tax-benefit microsimulation model for Ecuador
Mon, 29 July 2019Wed, 31 July 2019
Instituto de Altos Estudios Nacionales, Av. Río Amazonas N37-271 and Villalengua, Quito, Ecuador
Past event
Project workshop
Third training on MOZMOD – a tax-benefit microsimulation model for Mozambique
Wed, 3 July 2019Fri, 5 July 2019
Ministry of Economic and Finance, Julius Nyerere Avenue, Maputo, Mozambique
Past event
Project workshop
2019 SOUTHMOD workshop
Thu, 6 June 2019Fri, 7 June 2019
Park Inn by Radisson Cape Town Newlands, 10 Hemlock Street Newlands, Cape Town, South Africa
Past event
Project workshop
Economy-wide impact analysis using a pre-prototype 2015 Social Accounting Matrix for Myanmar

A training event on using economy-wide impact analysis with a pre-prototype 2015 Social Accounting Matrix for Myanmar was delivered for 13 policy analysts of the Ministry of Planning and Finance group of public sector institutions in Myanmar.

Mon, 20 May 2019Fri, 24 May 2019
Central Statistical Organization (CSO) , Naypyidaw, Myanmar (Burma)
Past event
Project workshop
UGAMOD Training - a tax-benefit microsimulation model for Uganda

The goal of this event is to give potential users of the model comprehensive training on the structure and use of the tax-benefit microsimulation model for Uganda, UGAMOD. As well as providing an overview of the model, the event will include several...

Wed, 10 April 2019Fri, 12 April 2019
Kampala, Uganda
Past event
Project workshop
Inclusive development in Myanmar: 3rd KoBo Toolbox training

As part of the project Towards Inclusive Development in Myanmar, a comprehensive Kobo Toolbox training was delivered for 23 staff members from the head office and regional offices the Central Statistical Organization (CSO) of the Ministry of Planning...

Mon, 8 April 2019Wed, 10 April 2019
Central Statistical Organization, Naypyidaw, Myanmar (Burma)
Past event
Project workshop
Macro drivers of structural transformation
Fri, 22 March 2019
UNU-WIDER, Katajanokanlaituri 6, Helsinki, Finland
Past event
Project workshop
Inclusive development in Myanmar: 2nd KoBo Toolbox training

As part of the project Towards Inclusive Development in Myanmar, a comprehensive Kobo Toolbox training was delivered for 25 staff members of the Central Statistical Organization (CSO) of the Ministry of Planning and Finance of Myanmar. This was a...

Thu, 21 March 2019Sat, 23 March 2019
Central Statistical Organization, Naypyidaw, Myanmar (Burma)
Past event
Project workshop
Labour market effects of structural change
Wed, 6 March 2019
Southern Sun Newlands hotel, 7 Main Road, Newsland, Cape Town, South Africa
Past event
Project workshop
A new collaborative project between UNU-WIDER and UONGOZI Institute
Mon, 4 March 2019
UONGOZI Institute, Plot No., 62 Msasani Rd, Dar es Salaam, Tanzania
Past event
Project workshop
Clientelistic politics and economic development
Fri, 1 March 2019
UNU-WIDER, Katajanokanlaituri 6, Helsinki, Finland
Past event
Project workshop
Women’s work
Fri, 22 February 2019
University of Göttingen, Göttingen, Germany
Past event
Project workshop
Transforming livelihoods in the informal sector
Fri, 8 February 2019
UNU-WIDER, Katajanokanlaituri 6, Helsinki, Finland
Past event
Project workshop
Using administrative tax data for research in Uganda: meeting of project collaborators

The workshop brought together around 20 participants, including researchers and staff members from the Uganda Revenue Authority (URA), UNU-WIDER, the Southern African Social Policy Research Institute (SASPRI), and the University of Makerere to...

Wed, 17 October 2018Thu, 18 October 2018
Uganda Revenue Authority, Plot M193/M194, Nakawa Industrial Area, , Kampala, Uganda
Past event
Project workshop
Authors’ workshop on Asian Transformation

Authors for the Volume II of the book published under the Asian Transformations project meet in Shanghai, China on 29-30 June 2018 to discuss the book's chapters final drafts.

Fri, 29 June 2018Sat, 30 June 2018
Fudan University, 600 Guoquan Road, Shanghai, 200433, China
Past event
Project workshop
Work-in-progress workshop: Tax-benefit microsimulation analysis

UNU-WIDER is organizing a project workshop to discuss research papers currently being written on tax-benefit microsimulation analysis under the SOUTHMOD – simulating tax and benefit policies for development project.

Thu, 14 June 2018
UNU-WIDER Library, Katajanokanlaituri 6B, Helsinki, Finland
Past event
Project workshop
SOUTHMOD workshop 2018

Under the SOUTHMOD – simulating tax and benefit policies for development project UNU-WIDER is organizing a workshop for project contributors. The workshop is an opportunity for representatives of the country teams from Ecuador, Ethiopia, Ghana...

Wed, 13 June 2018
UNU-WIDER Library, Katajanokanlaituri 6B, Helsinki, Finland
Past event
Project workshop
Authors' workshop - Natural resources, structural change and industrial development in Africa
Thu, 24 May 2018Fri, 25 May 2018
UNU-WIDER, Katajanokanlaituri 6B, Helsinki, Finland
Past event
Project workshop
Inequality in China – Authors’ workshop

On 15 May 2018, authors from the ‘Inequality in the Giants’ project’s China component meet in Beijing to discuss draft research papers.

Tue, 15 May 2018
Beijing Normal University (BNU), Meeting room 3, Jing Shi Xue Tang, Beijing, China
Past event
Project workshop
Waves of VARHS data

Researchers will meet in Helsinki on 15-16 February 2018 to discuss their work arising from a recent UNU-WIDER call for papers for detailed economic analysis of the Viet Nam Access to Rural Households Survey (VARHS) dataset. The meeting provides a...

Tue, 13 February 2018
UNU-WIDER, Katajanokanlaituri 6B, Helsinki, Finland
Past event
Project workshop
Training on VNMOD – a tax-benefit microsimulation for Viet Nam

The purpose of this event is to introduce participants to VNMOD, with a view to promoting its use within government for evidence-based policy-making. Training is directed to potential users of the model. As well as providing an overview of the model...

Mon, 13 November 2017Wed, 15 November 2017
Central Institute of Economic Management, Hanoi, Vietnam
Past event
Project workshop
Project workshop - Micro, Small, and Medium Enterprises in Viet Nam

Researchers and policy makers met in Hanoi on 7-8 November 2017 to discuss ongoing work on micro-, small- and medium-sized enterprises based on the latest data available from the Viet Nam SME survey. With a significant share of the country’s labour...

Tue, 7 November 2017Wed, 8 November 2017
Center for Economic Management (CIEM), 68 Phan Đinh Phung - Ba Dinh, Hanoi, Vietnam
Past event
Project workshop
Project workshop - Forced migration and inequality: country- and city-level factors influencing refugee integration

UNU-WIDER will hold a project workshop, ‘Forced migration and inequality: country- and city-level factors influencing refugee integration’, on 4 October 2017 in Accra, Ghana. The event brings together researchers to discuss work-in-progress, and...

Wed, 4 October 2017
African Regent Hotel, 237-238 Airport West, Accra, Ghana
Past event
Project workshop
Tax benefit reforms: microsimulation in developing countries
Tue, 4 July 2017
Maputo, Mozambique
Past event
Project workshop
An SME survey in Myanmar: Second training of enumerators

Following their first training, enumerators and supervisors from across Myanmar met to finalize their preparation for a survey of small and medium-sized enterprises. Participants discussed pending questions about the survey process, then participated...

Mon, 29 May 2017Tue, 30 May 2017
Central Statistical Organization, Naypyidaw, Myanmar (Burma)
Past event
Project workshop
An SME survey in Myanmar: First training of enumerators

Over 100 enumerators and their supervisors from across Myanmar participated in this 2-day training event in preparation for a survey of small and medium-sized enterprises throughout the country. At the event participants discussed the survey manual...

Mon, 15 May 2017Tue, 16 May 2017
Central Statistical Organization, Naypyidaw, Myanmar (Burma)
Past event
Project workshop
An SME survey in Myanmar: Training of survey supervisors

Representatives of CSO branches in 14 states/regions of Myanmar and supervisors from the main office in Naypyidaw met in preparation for a survey of small and medium-sized enterprises in Myanmar. The aim of the training was to present the survey...

Fri, 28 April 2017
Central Statistical Organization, Naypyidaw, Myanmar (Burma)
Past event
Project workshop
Inclusive development in Myanmar: Training course on sampling methodology

As part of the ‘Towards Inclusive Development in Myanmar’ project, 20 staff members of the Central Statistical office of Myanmar met to receive training on sampling methodology in preparation for the drafting of a quantative survey of small and...

Tue, 14 March 2017Wed, 15 March 2017
Central Statistical Organization, Naypyidaw, Myanmar (Burma)
Past event
Project workshop
Towards gender equity in development
Fri, 3 February 2017Sat, 4 February 2017
University of Namur, Faculty of Economics, Social Sciences and Business Administration, Rempart de la Vierge 8, Namur, Belgium
Past event
Project workshop
Contemporary issues in gender and development
Tue, 25 October 2016Wed, 26 October 2016
UNU-WIDER, Katajanokanlaituri 6 B, Helsinki, Finland
Past event
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