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4th World Bank Tax Conference: Global Tax Equity

September 22-23, 2022
Online and Washington, DC
4th World Bank IFS ODI Tax Conference

Inequality is one of the global challenges of our times. This phenomenon is increasingly driven by the ability of people and companies to move their wealth and profits across national borders. What is the role of fiscal policy in dealing with this challenge, both within countries and internationally? How might new data sources inform the debate?

This conference brought together leading researchers and policymakers to discuss recent research on making tax systems more equitable at a global scale, including:

  • Taxation of high-net-worth individuals, including wealth taxation;
  • Tax transparency, beneficial ownership, offshoring and tax havens;
  • Taxes on multinationals and large corporations, including BEPS pillar I and II;

The keynote address was delivered by Professor Gabriel Zucman, Associate professor of economics, University of California, Berkeley (online). The conference featured research presentations and academic discussions, and a special policy session featuring presentations from policymakers and practitioners on tax policy and lessons learned.

Conference Agenda

All times are in EDT

Please click links below to watch videos and view abstracts, papers, and presentations from the conference.
8:30-9:00 Continental Breakfast
9:00-9:10 Welcome Remarks: Marcello Estevão​ (World Bank) | watch video



Corporate Taxation

Chair: Pierre Bachas (World Bank)

Paper 1: “Fiscal Consequences of Corporate Tax Avoidance” | paper | presentation | watch video

- Presenter: Evgeniya Dubinina (Institute of Economic Studies, Charles University)

- Discussant: Ashima Neb (World Bank)

Paper 2: “Effective Tax Rates and Firm Size” | presentation | watch video

- Presenter: Camille Semelet (ifo Institute)

- Discussant: Jan Loeprick (International Monetary Fund)

 Paper 3: “The Case of Taxing Multinational Corporations in Uganda - Do multinational corporations face lower effective tax rates and is there evidence for profit-shifting?” 

- Presenter: Caroline Schimanski (World Bank)

- Discussant: David Phillips (Institute for Fiscal Studies)



Coffee Break




Introduction: Marcello Estevão​ (World Bank)

Keynote: Gabriel Zucman (University of California, Berkeley) | presentation | watch the video

“Globalization, Taxation, and Inequality”



Lunch break



Policy Session | watch the video            

Chair: David Phillips (Institute for Fiscal Studies)

Mr. Roberto Arias (former Secretary of Tax Policy, Argentine Republic) | presentation

Ms. Mariana Ríos (Vice Director, Customs Administration, Honduras) | presentation

- Mr. Mekar Satria Utama (Director of International Taxation, Ministry of Finance, Indonesia) | presentation

This session will feature presentations from policymakers and practitioners on tax policy changes currently under consideration, as well as lessons learned from experiences in designing and developing political support for policies related to international taxation, the taxation of High-Net-Worth Individuals, and ensuring an equitable tax system. The session aims to generate discussion and foster learning on tax policy, practice, and research.

*Organized by TaxDev



Lighting Talks - Taxation of Capital

Chair:  Anne Brockmeyer (Institute for Fiscal Studies)

Paper 1: “Firms’ Responses to Corporate Income Tax Reforms in a Developing Country" | presentation | watch video

Presenter: Massimiliano Calì (World Bank)

Paper 2: “Profit Shifting, Employee Pay, and Inequalities: Evidence from US-listed Companies” | paper | presentation | watch video

Presenter: Baptiste Souillard (Université Libre de Bruxelles)

Paper 3: “Small Nets for Big Fish? Tax Enforcement on the Richest –Evidence from Uganda” | paper | presentation | watch video

Presenter: Fabrizio Santoro (International Centre for Tax and Development)

Paper 4: “Fiscal Policy and Income Inequality: The role of taxes and social spending in addressing income inequality” | paper | presentation | watch video

Presenter: Laura Abramovsky (ODI)

Paper 5: "Transfer Pricing, Earnings Management and Corporate Governance amongst Multinationals: Evidence from Ghana" | paper | presentation | watch video

Presenter: King Carl Tornam Duho (Dataking Consulting)

15:00-15:30 Coffee Break



Offshore Wealth             ​​                                                                                   

Chair:  Ana Cebreiro Gomez (World Bank)

Paper 1: “So close and yet so far: The ability of mandatory disclosure regimes to crack down on offshore tax evasion” | presentation | watch video

- Presenter: Elisa Casi-Eberhard (Norwegian School of Economics)

- Discussant: Michael Best (Columbia University) | presentation

Paper 2: “Will We Ever Be Able to Track Offshore Wealth? Evidence from the Offshore Real Estate Market in the UK​” | paper | presentation | watch video

- Presenter: Jeanne Bomare​ (Paris School of Economics) 

- Discussant: Bob Rijkers (World Bank) | presentation

Paper 3: “Hide–seek–hide? The effects of financial secrecy on cross-border financial assets" | paper | presentation | watch video

- Presenter: Tereza Palanská (Institute of Economic Studies, Charles University)

- Discussant: Irem Guceri (University of Oxford) | presentation

September 23, Day 2

8:30-9:00 Continental Breakfast



Taxation of High-Net-Worth Individuals

Chair: Pablo Garriga (World Bank)

Paper 1: “Revealing 21% of GDP in Hidden Assets: Evidence from Argentina’s Tax Amnesties​​” | paper | presentation | watch video

- Presenter: Dario Tortarolo (University of Nottingham)

- Discussant: Carlos Scartascini (Inter-American Development Bank) | presentation

Paper 2: “Does a Wealth Tax Improve Equality of Opportunity?​” | paper | presentation | watch video

- Presenter: Kristoffer Berg​ (Oxford University) 

- Discussant: Steven Hamilton (George Washington University)

Paper 3: “The Tax Compliance of Wealthy Individuals in Rwanda” | paper | presentation | watch video

- Presenter: John Karangwa (Rwanda Revenue Authority) 

- Discussant: Florence Kondylis (World Bank)



Coffee Break



Lightning Talks - Enforcement      

Chair:  James Cust (World Bank)

Paper 1: “Optimal Assignment of Bureaucrats: Evidence from Randomly Assigned Tax Collectors in the DRC" | paper | presentation | watch video

Presenter: Augustin Bergeron (University of Southern California)

Paper 2: “Widening the Tax Net when Information is Scarce: The Role of Agents’ Discretion” | watch video

Presenter: Justine Knebelmann (JPAL-MIT​)

Paper 3: “How to Target Enforcement at Scale? Evidence from Tax Audits in Senegal​” | presentation | watch video

Presenter: Pierre Bachas (World Bank​​)

Paper 4: “Measuring Firm Activity from Outer Space” | paper | presentation | watch video

Presenter: Katarzyna Bilicka (Utah State University)​

Paper 5: "UN MTC Article 26: Inequitable Exchange of Information Regime – Questionable Efficacy in Asymmetrical Bilateral Settings" | paper | presentation | watch video

Presenter: Muhammad Ashfaq Ahmed (Federal Board of Revenue, Pakistan)



Personal Income Taxation

Chair:  Chiara Bronchi (World Bank)

Paper 1: “Personal Income Tax Reforms and Income Inequality in Africa​” | paper | presentation | watch video

- Presenter: Kyle McNabb​ (ODI) 

- Discussant: Oyebola Okunogbe (World Bank)

Paper 2: “Optional (Non-)Filing and Effective Taxation" | paper | presentation | watch video

- Presenter: Tobias Hauck (Protestant University of Applied Sciences Freiburg)

- Discussant: Daniel Prinz (World Bank) | presentation

Paper 3: “How does the progressivity of taxes and government transfers impact people’s willingness to pay tax? Experimental evidence across developing countries​​” | paper | presentation | watch video

- Presenter: Christopher Hoy (World Bank)

- Discussant: Sacha Dray (World Bank) | presentation


 Closing RemarksAart Kraay (World Bank) | watch video
13:40-14:10 Lunch


Session Format

Paper Presentations: 20 minute paper presentation, followed by a 5 minute discussion and a 5 minute Q&A.

Lightning Talks: 10 minute paper presentation, followed by a 2 minute Q&A.​