A financial analysis model has been implemented within the framework of the APL time-sharing system. The model allows different levels of input and output commands which can be used by persons with different degrees of familiarity with computing, in general, and the APL System in particular. It is the result of a joint study between IBM and the Urban Coalition aiming at providing a computer model of the urban housing process which would allow both government planners and private developers to analyze the financial prospects of individual housing projects under a variety of subsidy provisions and other constraints such as FHA regulations concerning profits. The model includes provisions for different types of sponsors of urban housing projects allowing for different tax treatment of profits and losses, and different formulas for estimating the rent charged. The basic output is either in the form of a summary of financial figures or complete financial tables such as income statements, balance sheets and cash flows. © 1971.