How we got our numbers

Washington Technology's annual Top 100 ranks the largest government contractors providing IT, systems integration, professional services and telecommunication services to federal agencies.

The rankings are based on an analysis of reports in the Federal Procurement Data System. Each government agency files reports to FPDS on their spending. Each transaction over $50,000 is assigned a product and service code, a PSC.

We’ve picked a set of some 350 PSCs to analyze the procurement data and develop the rankings.

We account for mergers and acquisitions, subsidiaries and joint ventures to get the right spending reports assigned to the right companies.

From there, we rank the companies from the largest number of prime contract dollars to the smallest, stopping at No. 100.

Two important caveats: Pretty much all intelligence spending is not reported to FPDS because it is classified. Also not counted are subcontracting dollars. We only gather data on prime contract obligations.

For the 2024 Top 10, we looked at spending for the federal government's 2023 fiscal year that started Oct. 1, 2022.

Because we get this question every year, I want to put a finer point on it. There is no application or submission process for the Top 100.

While companies should feel honored to be among the largest contractors in the market, this is not an award given by Washington Technology. This is a research project to identify the companies capturing the most contracts in the federal market.

Don’t hesitate to reach out to us if you have any questions