The elasticity of taxable income is a key tax policy parameter that plays an important role in the formulation of tax and transfer policy. This paper extends work by Kemp (2019) by using a new panel of individual tax returns and the phenomenon of 'bracket creep' to produce updated estimates of...

The complexity of the income tax is an unending source of complaint. Compliance costs have received increasing attention and are estimated to be large. Yet most recognize that some degree of complexity is necessary if ability to pay is to be measured accurately. This article presents a framework...

Knowing the elasticity of taxable income (ETI) is crucial for understanding the effects of taxation on taxpayer behavior and consequently on tax revenues. Previous research finds that high-income individuals are the most sensitive to tax policy changes. However, these individuals have more...

We study the optimal observability of the tax base within the standard linear income tax problem, where observability is determined by the government’s investment into the accurate measurement of the tax base. We characterize the optimal level of observability and derive a new expression for...

The complexity of the income tax is an unending source of complaint, and compliance costs are estimated to be very large. Yet most recognize that some degree of complexity is necessary if income is to be measured accurately. This article presents a framework for analyzing the value of greater...

Using longitudinal data for a panel of Brazilian personal income tax returns between 2011 and 2017 we estimate the elasticity of taxable income (ETI) before and after deductions of personal income tax and calculate optimal taxation levels. The behavioral response is examined using a natural...