How we got our Top 100 numbers
By
Nick Wakeman
Our rankings are based on an analysis of reports in the Federal Procurement Data System.
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 and USASpending.gov.
Each government agency files reports to FPDS on their spending. All transactions exceeding $50,000 is assigned a product and service code, also known as a PSC.
We use a set of roughly 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 down through No. 100.
Two important caveats: Pretty much all intelligence spending is not reported to FPDS because it is classified. We also do not count subcontracting dollars. We only gather data on prime contract obligations.
For the 2026 Top 100, we looked at spending for the federal government's 2024 fiscal year that spans Oct. 1, 2024 through Sept. 30, 2025.
There is no application or submission process for the Top 100. This is strictly a research project to identify the companies capturing the most contracts in the federal market.
Companies should feel honored to be among the largest contractors in the market, but this is not an award given by Washington Technology. These companies earned their spots on the Top 100.
Do not hesitate to reach out to us if you have any questions.