India's ₹1 lakh crore RDI Fund is becoming operational. Deep-tech teams need the right evidence route.

What changed

India approved the Research, Development and Innovation Fund in July 2025 and launched it in November 2025. The official portal describes a corpus of ₹1 lakh crore over six years, including a ₹20,000 crore allocation for 2025-26. It targets private-sector research and strategic technologies such as AI, robotics, quantum systems, advanced materials, energy and biotechnology.

The fresh practical signal is that the official portal now explains the operating route in greater detail. Its funding-mechanism page, updated on 7 September 2026, sets out a two-tier structure. A Special Purpose Fund channels capital through second-level fund managers. Eligible manager types include development finance institutions, NBFCs, alternative investment funds and focused research organisations.

A July government implementation update reported that the Technology Development Board and BIRAC had each been sanctioned ₹1,000 crore. It said ₹500 crore had been disbursed to TDB in March 2026, that TDB had approved 22 projects with ₹2,192 crore of support, and that BIRAC had shortlisted eight projects seeking ₹390.35 crore. These figures show movement, but they do not mean every startup can apply directly to the central pool.

• The portal describes long-term, low-interest financing through a competitive process.
• Selective equity support and fund-of-funds contributions can also be used.
• The two-tier structure makes the identity and criteria of the second-level manager important.

Why it matters to businesses

For deep-tech founders, the opportunity is patient capital aligned with longer research and commercialisation cycles. The constraint is that a technically promising project still needs an investable route. A manager must be able to understand the technology, assess milestones, manage risk and fit the project within its own mandate.

For established manufacturers and corporate R&D teams, the fund can change build-versus-buy decisions. A technology programme that was too long for a normal annual budget may become financeable through a partnership, special-purpose project or qualified intermediary. That still requires clear ownership of IP, procurement, facilities, data, regulatory approvals and commercial adoption.

Technology readiness level 4 is an important dividing line. It generally indicates validation in a laboratory environment rather than an idea on paper. Teams should not stretch the label. They should show the test setup, result, reproducibility, next technical risk and route to a relevant operating environment. An honest evidence gap is easier to finance than an inflated readiness claim that fails diligence.

What to do next

Map the project to the official priority areas and identify its current readiness level using evidence, not aspiration. Summarise the technical result in language an investment committee can inspect. Include the test method, benchmark, failure modes and the exact next milestone that new capital would unlock.

Then identify the likely financing route. Review the mandates of second-level managers and current calls rather than assuming a direct central application. Ask what instrument fits the project, what security or co-investment is expected, which milestones release funds and how long diligence normally takes.

Build a data room before outreach. It should include corporate records, cap table, IP chain, contracts, financial model, technical evidence, customer or partner validation, regulatory plan and milestone budget. Keep a one-page claim register linking every important statement in the pitch to supporting evidence.

• Confirm that the project and applicant fit the current official guidelines.
• Select a second-level manager whose mandate matches the technology and stage.
• Define milestones that connect technical progress to commercial adoption.
• Seek qualified legal and financial advice before accepting a loan, equity or fund structure.