This guide offers a step-by-step process for estimating software costs. Built on public-domain information and cost models, it gives the formulas software developers need to estimate the effort and time required to design, develop, test, and deliver their software projects. Intentionally methodology-independent, The Poor Person’s Guide includes examples for tailoring recommended processes to specific situations practitioners face in their day-to-day work. It concludes with industry benchmarks to help confirm that the estimates derived are realistic.