Federal agency contract profile
Department of the Interior: Federal Contract Spending & Top Vendors
Data through 2026-08-19 · FY2026 to date
- Obligations, FY2026 to date
- $4.5B
- Contract awards
- 20,016
- Average award size
- $225K
- vs. prior full fiscal year
- 31.4% decline
| Item | Obligations |
|---|---|
| FY21 | $5.1B |
| FY22 | $6.5B |
| FY23 | $7.6B |
| FY24 | $8.1B |
| FY25 | $6.6B |
| FY26 | $4.5B |
Obligations fell 31.4% year over year, from $6.6B in FY2025 to $4.5B in FY2026 to date.
The Department of the Interior obligated $4.5B in contracts in FY2026 to date. The agency made 20,016 awards with an average award size of $225K. Obligations fell 31.4% year over year. The FY2026 total is a partial, fiscal year to date figure; obligations peaked at $8.1B in FY24 then declined to $6.6B in FY25 and to $4.5B in FY26. The data show the Interior continues to spend across construction, IT, consulting, forestry support, engineering, and specialized transport, with several single NAICS categories and a small group of vendors capturing sizable shares of the current-year obligations. Contracting officers and industry partners should note the mix of infrastructure and professional services in the top categories and the concentration of obligations among the top vendors when planning opportunities and capture efforts for the remainder of the fiscal year.
How has Interior contract spending changed year over year?
Obligations fell 31.4% year over year. FY26 obligations were $4.5B, down from $6.6B in FY25 and below the FY24 peak of $8.1B. The agency’s multi-year series shows FY21 at $5.1B, FY22 at $6.5B, and FY23 at $7.6B. These figures reflect fiscal year to date totals for FY2026.
| Item | Obligations |
|---|---|
| Water and Sewer Line and Related Structures Construction | $592M |
| Other Heavy and Civil Engineering Construction | $407M |
| Other Computer Related Services | $355M |
| Computer Systems Design Services | $355M |
| Commercial and Institutional Building Construction | $323M |
| Administrative Management and General Management Consulting Services | $198M |
| Support Activities for Forestry | $166M |
| Custom Computer Programming Services | $140M |
| Engineering Services | $122M |
| Nonscheduled Chartered Passenger Air Transportation | $83.2M |
Water and Sewer Line and Related Structures Construction was Interior's largest contract category, with $592M obligated (13.2% of contract spending).
What are the largest contract categories and who wins them in FY2026 to date?
Water and Sewer Line and Related Structures Construction is the largest category at $592M, followed by Other Heavy and Civil Engineering Construction at $407M, and Other Computer Related Services at $355M. Computer Systems Design Services is also $355M, Commercial and Institutional Building Construction is $323M, and Administrative Management and General Management Consulting Services is $198M. GENERAL DYNAMICS INFORMATION TECHNOLOGY, INC. leads vendors at $136M, followed by AMES FEDERAL CONTRACTING GROUP LLC at $132M and RECORD STEEL AND CONSTRUCTION, INC. at $129M.
| Item | Obligations |
|---|---|
| GENERAL DYNAMICS INFORMATION TECHNOLOGY, INC. | $136M |
| AMES FEDERAL CONTRACTING GROUP LLC | $132M |
| RECORD STEEL AND CONSTRUCTION, INC. | $129M |
| NW CONSTRUCTION, INC | $126M |
| G.S.E. CONSTRUCTION COMPANY, INC. | $109M |
| KIEWIT INFRASTRUCTURE WEST CO. | $104M |
| GUIDEHOUSE INC. | $85.2M |
| FLATLAND ENERGY SERVICES LLC | $75.5M |
| KBR WYLE SERVICES, LLC | $71.5M |
| PERIMETER SOLUTIONS LP | $70.8M |
GENERAL DYNAMICS INFORMATION TECHNOLOGY, INC. led all Interior contractors with $136M, 3.0% of obligations.
| Rank | Vendor | Obligations |
|---|---|---|
| 1 | GENERAL DYNAMICS INFORMATION TECHNOLOGY, INC. | $136M |
| 2 | AMES FEDERAL CONTRACTING GROUP LLC | $132M |
| 3 | RECORD STEEL AND CONSTRUCTION, INC. | $129M |
| 4 | NW CONSTRUCTION, INC | $126M |
| 5 | G.S.E. CONSTRUCTION COMPANY, INC. | $109M |
| 6 | KIEWIT INFRASTRUCTURE WEST CO. | $104M |
| 7 | GUIDEHOUSE INC. | $85.2M |
| 8 | FLATLAND ENERGY SERVICES LLC | $75.5M |
| 9 | KBR WYLE SERVICES, LLC | $71.5M |
| 10 | PERIMETER SOLUTIONS LP | $70.8M |
| Rank | Recipient | Award Amount |
|---|---|---|
| 1 | ACACIA CENTER FOR JUSTICE | $832M |
| 2 | GUIDEHOUSE INC. | $403M |
| 3 | CDM CONSTRUCTORS INC | $360M |
| 4 | FAMILY ENDEAVORS, INC. | $347M |
| 5 | DEEP MILE NETWORKS LLC | $332M |
| 6 | JACOBS PROJECT MANAGEMENT CO. | $271M |
| 7 | THE PROVIDENCIA GROUP LLC | $270M |
| 8 | NW CONSTRUCTION, INC | $257M |
| 9 | BOOZ ALLEN HAMILTON INC | $245M |
| 10 | LUMEN TECHNOLOGIES GOVERNMENT SOLUTIONS, INC. | $244M |
| 11 | STRONGHOLD ENGINEERING INC | $223M |
| 12 | TEPA EC, LLC | $220M |
| 13 | KIEWIT INFRASTRUCTURE WEST CO. | $218M |
| 14 | PLANET TECHNOLOGIES, INC. | $202M |
| 15 | BWI TPC, A JOINT VENTURE | $188M |
| 16 | DLH, LLC | $180M |
| 17 | CGI FEDERAL INC. | $163M |
| 18 | DEPLOYED SERVICES, LLC | $157M |
| 19 | MAGELLAN FEDERAL, INC. | $152M |
| 20 | NW CONSTRUCTION, INC | $139M |
| 21 | GENERAL DYNAMICS INFORMATION TECHNOLOGY, INC. | $138M |
| 22 | OSCAR RENDA CONTRACTING INC | $132M |
| 23 | RECORD STEEL AND CONSTRUCTION, INC. | $129M |
| 24 | CENTERPOINT LLC | $126M |
| 25 | HENSEL PHELPS CONSTRUCTION CO | $118M |
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Frequently asked questions
How much does Department of the Interior spend on contracts?
The Department of the Interior obligated $4.5B on contracts in FY2026 to date. The agency executed 20,016 awards with an average award size of $225K. Obligations fell 31.4% year over year and the FY26 total follows prior fiscal year levels of $8.1B in FY24 and $6.6B in FY25.
What does Interior buy?
Interior buys a mix of construction, professional services, IT, engineering, forestry support, and niche transportation services. Top categories in FY2026 to date include Water and Sewer Line and Related Structures Construction at $592M, Other Heavy and Civil Engineering Construction at $407M, Other Computer Related Services at $355M, Computer Systems Design Services at $355M, Commercial and Institutional Building Construction at $323M, Administrative Management and General Management Consulting Services at $198M, Support Activities for Forestry at $166M, Custom Computer Programming Services at $140M, Engineering Services at $122M, and Nonscheduled Chartered Passenger Air Transportation at $83.2M.
Who are Interior's largest contractors?
Interior's largest contractors in FY2026 to date are concentrated among a few firms. The top vendors are GENERAL DYNAMICS INFORMATION TECHNOLOGY, INC. at $136M, AMES FEDERAL CONTRACTING GROUP LLC at $132M, RECORD STEEL AND CONSTRUCTION, INC. at $129M, NW CONSTRUCTION, INC at $126M, G.S.E. CONSTRUCTION COMPANY, INC. at $109M, KIEWIT INFRASTRUCTURE WEST CO. at $104M, GUIDEHOUSE INC. at $85.2M, FLATLAND ENERGY SERVICES LLC at $75.5M, KBR WYLE SERVICES, LLC at $71.5M, and PERIMETER SOLUTIONS LP at $70.8M.
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