A Little Background
FAR Part 31, Cost Principles, is the regulation that government contractors must follow in order to account for cost on most government contracts. Within FAR Part 31 is FAR 31.205, Selected Costs. This part of the cost principles regulation specifically spells out unallowable cost that the government will not pay for under a government contract. This section starts at FAR 31.205-1 and goes all the way up to FAR 31.205-52. However, it should be noted that FAR 31.205-2, 5, 9, 24, 45, and 50 are “Reserved” – These reserved cost areas went the way of the dinosaur over time, hopefully not to return. For example, FAR 31.204-2, Automatic Data Processing Equipment Leasing Costs, required an annual demonstration that leasing computer equipment was cost-effective, i.e., lowest cost to the Federal Government.