The effects of increased monitoring on high wealth individuals: Evidence from a quasi-natural experiment in Indonesia

Ho Fai Chan, Katharina Gangl, Mohammad Wangsit Supriyadi and Benno Torgler

Journal of Economic Behavior & Organization, 2023, vol. 215, issue C, 244-267

Abstract: In 2009, Indonesia introduced a specialised tax office focused on High Wealth Individuals (HWIs), increasing the audit probability and monitoring of around 1200 wealthy taxpayers in Jakarta. Leveraging a quasi-natural experiment and analysing 141,097 de-identified individual tax return records between 2006 and 2012, we developed a set of counterfactuals to evaluate the post- and pre-treatment tax declarations of the monitored taxpayers relative to their synthetic control groups. Our results indicate that although post-treatment declaration of taxable and earned income, as well as income tax, increased, the effect was short-lived. The increase in reported earned income was larger relative to taxable income, suggesting that monitored individuals exerted efforts to reduce tax payments. Furthermore, we identified a comparable positive spillover effect on income declaration for non-treated taxpayers in Jakarta who met the HWI criteria. We also demonstrated that the spillover effect drastically decreased as financial characteristics (such as income and wealth) diverged from those of the targeted population. Overall, the additional tax revenue generated from this program is small in comparison to the total tax revenue collected.

Keywords: Tax compliance; Quasi-natural experiment; Institutional reform; High wealth individuals; Spillover effects (search for similar items in EconPapers)
JEL-codes: C99 H24 H26 (search for similar items in EconPapers)
Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:eee:jeborg:v:215:y:2023:i:c:p:244-267

DOI: 10.1016/j.jebo.2023.09.017

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