We study optimal income and commodity tax policy with credit-constrained low-income households. Workers are assumed to receive an even ow of income during the tax year, but make tax payments or receive transfers at the end of the year. They use their disposable income to purchase multiple...

We study the optimal taxation of risk-free and excess capital income with heterogeneous rates of return, alongside an optimal nonlinear earnings tax. Households can hold three assets: one risk-free, one risky but diversifiable, and one a private investment with idiosyncratic risk whose expected...

This chapter summarizes the economic principles that would help evaluate individual investment projects, general expenditure programs, government policies, and the regulation of economic activities. The objective of the project and program evaluation is to measure the net benefit of a project or...

This paper discusses how decentralized countries can achieve sound fiscal relations between the central government and lower government levels. The concepts of 'vertical gap' and 'vertical balance' provide an analytical framework for identifying and addressing key challenges. These concepts can...

This paper considers the problem of jointly decomposing a set of time series variables into cyclical and trend components, subject to sets of stochastic linear restrictions among these cyclical and trend components. We derive a closed form solution to an ordinary problem featuring homogeneous...