RDT&E Project · President's Budget PB2027

B-21 Modernization

Project 644044·PE 0604015F — Long Range Strike - Bomber·U.S. Air Force·BA4
FY2027 Request
$1.10B
▲ 70% vs FY2026
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Project 644044 — B-21 Modernization requests $1.10B in FY2027, 38% of the $2.86B requested for program element 0604015F, up 70% on FY2026. 1 R-2A activity decomposes the request.

MarketNuclear Modernization

Matched on this project's title. A title match, not a curated taxonomy — narrative-only matches are not shown at all rather than shown with a caveat nobody reads. No market size is quoted here: a market spans appropriations far beyond this program element.

FY2027 Request
$1,101.4M
▲ 70% vs FY2026
FY2026 Enacted
$646.2M
▲ 148% vs FY2025
FY2025 Actual
$260.3M
Prior year
Project detail

What project 644044 buys

This program is reported in accordance with Title 10, United States Code, Section 119(a)(1) in the Special Access Program Annual Report to Congress. Program overview provided below. The Long Range Strike - Bomber (B-21 Raider) is crucial to the nuclear modernization plan, forming the backbone of the Nation's future bomber force, providing both conventional and nuclear capability. The B-21 platform provides range, access, and payload to go anywhere needed, with the weapons required to deter and win our nation's wars. Its open system architecture will enable rapid integration of future capabilities, keeping the platform relevant and effective as the threat environment evolves. The Air Force requires a minimum of 100 B-21s as part of the long-term bomber force. The Engineering and Manufacturing Development (EMD) contract was awarded in 2015, followed by a Critical Design Review (CDR) completed in 2018. Test aircraft are executing the B-21 flight test campaign and an approved Milestone C decision with all statutory and regulatory documentation was completed in 2023. Modernization BPAC for tracking separately from EMD funding line was created in 2024.

R-3 lines of work
  • Product Development
Funding trajectory

Project 644044 funding, FY2025–FY2031

Prior years are actuals, the budget year is the request, and the outyears are the FYDP plan. Estimate types are colored and never summed into one figure. Projects carry the full five-year plan; the activities inside them stop at the budget year.

2505007501,0000260.3FY25ACTUAL646.2FY26ENACTED1,101.4FY27REQUEST956.7FY28900.2FY29698.0FY30735.6FY31
Actual Enacted Request Outyear (FYDP)
Fiscal YearEstimate TypeAmount ($M)
FY2025Actual260.3
FY2026Enacted646.2
FY2027Request1,101.4
FY2028Outyear956.7
FY2029Outyear900.2
FY2030Outyear698.0
FY2031Outyear735.6
Inside the project

1 accomplishment / planned program

The R-2A exhibit — the only level of the budget that describes work that has not happened yet. Activities carry the prior, current and budget year only, no five-year plan. Each describes FY2027 work in enough detail to have its own page; the rest are shown here in full. Coverage is partial across the corpus, so count activities, never total them.

FY2025 actual$260.3M
FY2026 enacted$646.2M
FY2027 request$1,101.4M

FY 2027 includes funding for the continuation of modernization studies/ technical risk reduction activities. In addition, modernization activities will be supported, which includes but is not limited to, weapons integration/certification, air vehicle provisioning for future capabilities, sensors, and payloads.

Read the FY2027 plan →