A central question in development economics is how to fund public goods. Informal taxation, whereby households make direct contributions to local public goods (such as water resources, roads and schools) outside of the formal tax system, is an important source of funding for public goods in many low-income countries, especially Kenya (Olken and Singhal 2011, Ngau 1987, Barkan and Holmquist 1986). Informal taxes are coordinated and collected by local leaders and enforced via social sanctions rather than the state. In a formal tax system, legal statutes dictate how taxes change with household income. But how does informal taxation respond to changes in household income?
My job market paper first quantifies informal taxation in Kenya. Using household panel data, I estimate informal tax schedules over the income distribution and test whether informal taxes respond to changes in earned income. Second, I estimate how informal taxation and public goods respond to a large, one-time increase in income from a randomized unconditional cash transfer program targeting poor households.