Innovative Space Carrier secures ¥1B MEXT SBIR Phase 3 top-up for reusable rocket work
What's the deal? Innovative Space Carrier (ISC), a Tokyo-based startup building reusable space transportation systems, has secured an additional ¥1B (roughly $7M) in funding from Japan's Ministry of Education, Culture, Sports, Science and Technology (MEXT). The allocation came after a stage-gate review under the ministry's Small Business Innovation Research (SBIR) Phase 3 programme, which focuses on private rocket development and demonstration. ISC also received a timeline extension for Phase 2 of the project through May 2027.
The company, led by chief executive Kojiro Hatada, is headquartered in Tokyo's Chuo ward. Its stated vision: make daily transport of people and cargo to space as routine as it is on Earth.
Why now? Japan is accelerating efforts to build a domestic commercial space sector. The SBIR Phase 3 fund, modelled on the US programme of the same name, channels public money into startups tackling strategic technology gaps. Stage-gate reviews are built into the programme's structure — companies must hit milestones to unlock further funding and development time.
ISC's passage through this review signals the government is satisfied with the startup's progress on its reusable launch vehicle work.
What could go wrong? Reusable rockets remain one of the hardest engineering challenges in aerospace. Even well-funded incumbents have suffered repeated failures on the path to reliable reusability. Government grants help, but ¥1B is modest relative to the capital typically required to bring a launch vehicle from development to operational status. ISC will almost certainly need significant private investment to complement public funding.
The May 2027 deadline for the extended phase is tight. Any major technical setbacks could put the company behind schedule and complicate future funding rounds.
The signal: ISC's government top-up is modest in absolute terms, but it underscores Tokyo's commitment to building a sovereign launch capability through startup-friendly procurement. The SBIR Phase 3 structure — milestone-gated, with incremental funding unlocks — mirrors a broader shift across spacefaring nations toward performance-based public investment in commercial launch, a model pioneered by NASA's contracts with SpaceX. For ISC, the real test will be converting public validation into the private capital needed to close the gap between prototype and operational vehicle.
Read more: prtimes.jp
