Policy Brief

Cannabis Taxation as a Revenue Source for Development: Opportunities and Challenges

April 2023
Max Gallien, Giovanni Occhiali

Working Paper

Catch Them If You Can: the Politics and Practice of a Taxpayer Registration Exercise

April 2023
Max Gallien, Giovanni Occhiali, Vanessa van den Boogaard

Working Paper

How Might the National Revenue Authority of Sierra Leone Enhance Revenue Collection by Taxing High Net Worth Individuals?

March 2023
Jalia Kangave, Giovanni Occhiali, Ishmail Kamara

Working Paper

An Overlooked Market: Loose Cigarettes, Informal Vendors, and Their Implications for Tobacco Taxation

February 2023
Max Gallien, Giovanni Occhiali, Hana Ross

Working Paper

ICT and Tax Administration in Sub-Saharan Africa: Adopting ITAS in Uganda and Sierra Leone

October 2022
Giovanni Occhiali, Doris Akol, Philip M. Kargbo

Journal Article

No smoking gun: tobacco taxation and smuggling in Sierra Leone

June 2022
Giovanni Occhiali, Max Gallien

In person

15 October 2026 – 09:00

•

Timezone: Bangkok time, GMT+7

Tax expenditures, including exemptions, deductions, credits and reduced rates, are among the most widely used tax policy tools, yet they are often costly, poorly governed and subject to limited scrutiny. Revenue foregone through tax expenditures worldwide amounts to around USD

Virtual

19 May 2026 – 15:05

•

Timezone: Europe/London

Organised on the sidelines of the Global Partnerships Conference, our side event will provide practical lessons drawn from research on tax reform in lower-income countries.

Virtual

9 April 2026 – 13:00

•

Timezone: Europe/London

This webinar, hosted by ATI’s Consultative Group 4, will look into the role of Official Development Assistance in building up the capacity of “accountability stakeholders” — including civil society, academia, and the media — around domestic revenue mobilisation.