Working Paper
Estimating the scale of profit shifting and tax revenue losses related to foreign direct investment
Governments’ revenues are lower when multinational enterprises avoid paying corporate income tax by shifting their profits to tax havens. In this paper, we ask which countries’ tax revenues are affected most by this tax avoidance and how much. To...
Working Paper
An evaluation of interest deduction limitations to counter base erosion in South Africa
This paper aims to describe funding structures of companies liable for tax in South Africa and how this relates to other characteristics, including ownership, of the companies. The research that the paper reports on was performed as descriptive...
In the media
SA-TIED researcher interviewed on tax haven research
SA-TIED researcher, Ludvig Wier, has featured in multiple South African news outlets explaining new research findings from the programme. Wier was invited to speak to anchors from South Africa’s national news channels, SABC and eNCA. He was also...
Working Paper
Global minimum corporate income tax
This paper simulates the impact of the global minimum corporate tax rate (GMCTR) in Uganda by estimating the difference between the mechanical and the behavioural changes in tax revenue. Overall, implementation of GMCTR will increase tax revenue, and...
Blog
Overcoming the challenge of illicit financial flows: Four pieces of advice for policymakers
From profit shifting to sanction evasion, illicit financial flows divert funds away from essential poverty-fighting and infrastructure programs. A...
Journal Article
Tax-motivated transfer mispricing in South Africa
This paper provides the first direct systematic evidence of profit shifting through transfer mispricing in a developing country. Using South African transaction-level customs data, the author directly tests for transfer price deviations from arm's...
Working Paper
Global profit shifting, 1975–2019
This paper constructs time series of global profit shifting covering the 2015–19 period, during which major international efforts were implemented to curb profit shifting. We find that (i) multinational profits grew faster than global profits, (ii)...
Journal Article
The dominant role of large firms in profit shifting
Globally, the largest 0.001 per cent of frms earn one-third of all corporate profts. Nonetheless, there is little understanding of how proft shifting difers across frm size. Using the universe of South African corporate tax returns and global...
Blog
$1 trillion in the shade: The annual profits multinational corporations shift to tax havens continues to climb and climb
by
Ludvig Wier, Gabriel Zucman
March 2023
About a decade ago, the world’s biggest economies agreed to crack down on multinational corporations’ abusive use of tax havens. This resulted in a 15...
Journal Article
Illicit financial flows and developing countries
Illicit financial flows (IFFs) constitute a major challenge for development in low-income countries, as domestic resource mobilization is imperative for providing crucial public services. This study focuses exclusively on the economic dimension of...
Blog
Empirical research is crucial for better tax enforcement in the developing world
I had the privilege to participate in the UNU-WIDER Winter School as one of the lecturers. In this blog, I explain my main takeaways for students and...
Working Paper
Fiscal consequences of corporate tax avoidance
Multinational corporations shift a large share of their foreign profits to tax havens and, due to this corporate tax avoidance, governments worldwide lose a portion of their tax revenues. In this paper we study the consequences of multinational tax...
Blog
New global estimates on profits in tax havens suggest the tax loss continues to rise
by
Ludvig Wier, Gabriel Zucman
December 2022
The world has been trying to curb profit shifting to tax havens for a decade, but consistent time series evaluating the impact of these reforms have...
Working Paper
Illicit financial flows and the Global South
Illicit financial flows (IFFs) constitute a major challenge for development in the Global South, as domestic resource mobilization is imperative for providing crucial public services. While several methods offer to measure the extent of IFFs, each...
Working Paper
The indirect costs of corporate tax avoidance exacerbate cross-country inequality
Corporate tax avoidance hampers domestic revenue mobilization and, with it, the development of lower- and middle-income countries. While a wide range of studies has shed light on the magnitude of profit shifting by multinational corporations, the...