U.S. Surges Funding to Accelerate B-21 Bomber Development After Multiple Delays Risk China Overtaking

The United States Department of War is requesting a $6.1 billion funding boost for the B-21 Raider next generation bomber program, as part of a major surge in defence spending to over $1.5 trillion for Fiscal Year 2027. The increase in funding is intended to accelerate development work, following years of delays plaguing the program. The funding increase was confirmed to reflect the Department of War’s prioritisation of accelerating the deployment of a survivable bomber capable of operating in highly contested environments. This capability has been presented as critical to ensuring credible deterrence in an era of rapidly advancing adversary air defence capabilities.

The request for greater funding follows an acceleration of the B-21 program on September 11, 2025, when the Department of the Air Force confirmed the arrival of the second flight prototype at Edwards Air Force Base to effectively double its flight testing capacity. This has enabled parallel testing and evaluation activities, allowing the program to move beyond basic flight performance into more advanced phases, including mission systems testing and weapons integration. Secretary of the Air Force Troy Meink recently reported that this development provides substantial momentum to development testing, accelerating critical evaluations tied directly to combat effectiveness. The Air Force has since September been able to simultaneously assess sensor fusion, electronic warfare resilience, and communications interoperability. The service is also testing the integration of both nuclear and conventional armaments. The bomber in mid-April successfully tested its aerial refuelling capability with a KC-135 Stratotanker.

The Air Force was reported in late February to be nearing an agreement with the B-21’s primary contractor Northrop Grumman to accelerate the production. The aircraft had by that time moved into a low-rate initial production phase consisting of five lots, which will between them produce a total of 21 aircraft. Northrop Grumman has indicated it plans to invest between $2 billion and $3 billion over multiple years to support an increased production capacity, with Congress having approved the investment of $4.5 billion towards supporting production in July 2025. Having faced significant delays in development, the B-21 is currently expected to enter service in the early 2030s. Increased investment may however allow the fleet to expand significantly faster during the decade. 

The B-21 program has gained greater urgency due to China’s development of its own intercontinental range stealth bomber, with new images in January showing what appear to be twin internal weapons bays that would confirm the aircraft is intended to serve as a long range bomber. The unmanned aircraft was first seen in satellite footage from a People’s Liberation Army Air Force test base near Malan, Xinjiang province, which was published in mid-June 2025. Images on October 19 subsequently showed the aircraft in flight for the first time. China currently lacks an intercontinental range bomber, relying solely on the H-6 medium range bomber, although the much smaller aircraft in the late 2010s gained the ability to employ long range ballistic missiles capable of striking targets at intercontinental ranges including the United States mainland. 

China’s next generation stealth bomber is expected to enter service in the early 2030s, possibly before the B-21, complementing the East Asian state’s much wider established lead in sixth generation fighter development. Delays to the B-21’s development have not only allowed China to significantly narrow, if not totally bridge, development gaps, but have also forced the U.S. Air Force to extend the planned service lives of the B-2 and B-1B bombers which the new aircraft was intended to replace in service. The Chinese bomber appears to be significantly larger than the B-21, with a wingspan of approximately 52 meters, compared to only around 40 meters for its U.S. rival, as the B-21 was designed to be significantly smaller than the B-2 to reduce procurement and sustainment costs as well as maintenance needs.