This paper uses household-level survey data from a 1989 Harris poll conducted in 12 developing and three developed countries to examine the empirical relationship between the support for paying higher taxes for environmental protection and per capita national income. Results from ordered probit estimation suggest that as per capita real gross domestic product rises, controlling for other household characteristics, the strength of the support for somewhat higher taxes for environmental protection is falling for low-income countries and rising for high-income countries. The evidence also suggests that environmental protection may be important to people in developing countries during the process of economic growth. The high level of support for environmental protection found among the lower-income African countries included in this study is one result that warrants additional research. Higher economic growth rates are also found to be associated with greater support for environmental protection.