India has one of the world's largest tribal populations. According to the 2011 census, the total tribal population was estimated at 8.6 percent in India. In Tamil Nadu, the tribal population is about 1.1 percent spread among six major primitive tribal communities. Consumption expenditure is one of the indicators of wellbeing and standard of living in households. This book focuses on the Malaiyali Tribe, which inhabits the Jawadhu hills. This tribal group lives below the poverty line, deriving main sources of income from seasonal agricultural and agricultural labor work. It also depends on secondary sources of income from gathering and selling forest-based products. The major objectives of the study are i) to identify factors influencing household income and expenditure patterns, and ii) to analyze income and expenditure patterns of scheduled tribe households. An appropriate study area will be chosen in the State of Tamil Nadu. The book aims to help understand tribal income and expenditure patterns, and it would be useful for designing further tribal livelihood programs in India and elsewhere.