CSTEP aims to contribute to India's macroeconomic database of Input-Output Tables (IOTs) and Social Accounting Matrices (SAMs) by compiling matrices for an updated base year. These comprise uniquely detailed databases, useful to practitioners and policy makers alike. This paper also develops a methodology for compiling satellite accounts, namely, an investment matrix. Such extensive databases are useful for understanding complex inter-relationships within and among economies. They are most commonly applied in macroeconomic modelling techniques, like the Computable General Equilibrium (CGE) framework.