Program · United States · Space Systems Command
Space-Based Interceptor (SBI)
Space Force prototype effort under Golden Dome for a proliferated low-Earth-orbit constellation carrying kinetic interceptors against missiles in boost, midcourse and glide phases; 12 OTAs worth up to $3.2B combined were awarded in late 2025 and early 2026.
Cost to the governmentFY2025 enacted $5.60B
| Fiscal year | Appropriation | Request | Enacted | Qty | Budget line | Source |
|---|---|---|---|---|---|---|
| FY2025 | Total | — | $5.60B | — | — | Congressional Research ServiceConfirmed |
What the government budgets and pays for this program, from budget justification books, appropriations, acquisition reports and contract announcements. Budget years are then-year dollars unless marked; program totals and unit costs state their dollar basis. Award values (what a company was obligated) are under Awards.
Participants12
Prime
12- Anduril IndustriesReported
- Booz Allen HamiltonReported
- General DynamicsReported
- GITAI USAReported
- Lockheed MartinReported
- Northrop GrummanReported
- QuindarReported
- RTXReported
- Sci-TecReported
- SpaceXReported
- True AnomalyReported
- Turion SpaceReported
Roles as recorded: a prime holds the contract, teammates and subcontractors build under it, competing bidders bid against it, operators field the result.
News3
- May 12, 2026News (high significance)The HillCBO estimates Golden Dome will cost $1.2 trillion over 20 years
- Apr 24, 2026News (high significance)DefenseScoopSpace Force names 12 companies to develop Golden Dome's space-based interceptors
- Nov 25, 2025News (high significance)Air & Space Forces MagazineSpace Force Awards First Contracts for Golden Dome's Space-Based Interceptors
Sources2
Profile1
- 1
DefenseScoop · Apr 24, 2026 · Supports Program, Program · program participant:anduril-industries, Program · program participant:booz-allen-hamilton, Program · program participant:general-dynamics, Program · program participant:gitai-usa, Program · program participant:lockheed-martin, Program · program participant:northrop-grumman, Program · program participant:quindar, Program · program participant:rtx, Program · program participant:sci-tec, Program · program participant:spacex, Program · program participant:true-anomaly, Program · program participant:turion-space
“The service awarded other transaction authority (OTA) agreements — worth up to a combined $3.2 billion — to the vendors in late 2025 and early 2026”
Other1
- 2
Congressional Research Service · Jul 10, 2025 · Supports Cost · amount
“Section 20003(a)(7) would have provided $5.6 billion for “development of space-based and boost phase intercept capabilities.” ... Section 20003(a)(5) adopts the House provision.”
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