We study the extent to which ML techniques can be used to improve tax auditing efficiency using administrative data, without the need of randomized audits. Using Italy's population data on sole proprietorship tax returns, audits and their outcome, we develop a new approach to address the so...

This paper investigates how tax rates and tax enforcement jointly impact fiscal capacity in low-income countries. We study a policy experiment in the D.R. Congo that randomly assigned 38,028 property owners to the status quo tax rate or to a rate reduction. This variation in tax liabilities...

We study behavioral responses to personal wealth taxes in Colombia. We utilize tax microdata from 1993 to 2016 linked with the leaked Panama Papers to investigate offshoring to the country's key tax havens. We leverage variation from discrete jumps in tax liability and four major reforms to the...

We study a French wealth tax reform that starkly reduced the information some taxpayers must report to the tax authority. Using a new dynamic bunching approach we estimate the average response to the reform, the share of compliers, and the local average treatment effect. The annual wealth growth...

This paper offers a new approach to measuring the size of the informal economy based on VAT data for the European Union. Although data intensive, our EVADE measure is simpler and more transparent than existing measures. EVADE also shows more variation across countries of Europe than earlier...

This paper uses account-level information, reported to the IRS by foreign financial institutions under the Foreign Account Tax Compliance Act (FATCA), to produce new evidence on the foreign financial wealth of U.S. households. We find that U.S. taxpayers hold around $4 trillion in foreign...

The U.S. Supreme Court decision in the landmark 2018 Wayfair case greatly improved state governments' ability to enforce collection of sales taxes on a destination basis. This has reduced state tax competition with an essentially-untaxed internet, but has brought traditional cross-border...

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) the share of multinational profits booked in...

The 2017 Tax Cut and Jobs Act reduced the US corporate tax rate and introduced provisions to curb profit shifting. We combine survey data, tax data, and firm financial statements to study the evolution of the geographical allocation of US firms' profits after the reform. The share of profits...

German municipalities levy local business taxes by choosing a tax rate to apply to local business income, where the tax base is defined uniformly at the national level. Before the federal government's imposition of a minimum tax rate in 2004, some municipalities such as the tiny North Sea town...