24th March 2020

Knowledge Type

Good Practice Document


, US Government Accountability Office

Major Project


Of Interest To

Academia Consultants Contractors Operators Private sector clients Public sector clients

Cost Estimating and Assessment Guide


Legislators, government officials, and the public want to know whether government programs are achieving their goals and what their costs are. To make these kinds of evaluations of the latest ship, IT system, or other acquisition, reliable cost forecasts and updates are required.

The US Government Accountability Office developed this guide, initially published in 2009, to provide agencies across the government with a way to produce reliable, high quality cost estimates. It outlines key steps in the estimating process. This is the first update to the guide. It includes improved descriptions of cost estimating steps, additional technical information, and an updated format.