Abstract
Improving Tax Compliance Without Increasing Revenue: Evidence from Population-Wide Randomized Controlled Trials in Papua New Guinea
Highlights
Tax as a share of GDP and levels of tax compliance are substantially lower in the poorest countries in the world (Besley and Persson, 2014; Slemrod, 2019; Brockmeyer et al, 2019)
To be able to meaningfully increase revenue, nudges would have to be able to have a positive impact on taxpayers who face a high cost from complying. This raises the question as to which types of taxpayers respond to credible, non-deterrence nudges in low- and lower-middle-income countries and whether these messages are an effective way to raise revenue. We examine this issue by conducting two population-wide randomized controlled trials involving all firms registered to pay Salaries and Wages Tax (SWT) and Value Added Tax (VAT) in Papua New Guinea (PNG)
We extend existing theory (Allingham and Sandmo, 1972; Slemrod, 2019) by introducing transaction costs into a simple model of tax compliance and theorize that nudges will have dramatically different effects on taxpayers depending on their compliance history
Summary
Tax as a share of GDP and levels of tax compliance are substantially lower in the poorest countries in the world (Besley and Persson, 2014; Slemrod, 2019; Brockmeyer et al, 2019). Governments have begun exploring alternative, non-deterrence approaches to encourage taxpayers to comply, such as by providing them with information that tax revenue funds public goods and services (Antinyan and Asatryan, 2019; Mascagni, 2018). The impacts of these “nudges” are likely to be inversely related to the cost taxpayers face from complying, especially when enforcement is weak as they may believe they can avoid being punished for non-compliance (Gordon and Li, 2009). This raises the question as to which types of taxpayers respond to credible, non-deterrence nudges in low- and lower-middle-income countries and whether these messages are an effective way to raise revenue
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