TDF: A Complete Guide to DRDO's Technology Development Fund Scheme

Some of India's most critical defence technology gaps are not startup scale problems. They are substantial engineering challenges that need serious project financing, a defined pathway from proof of concept to induction ready prototype, and deep technical collaboration with the country's premier defence research body. Few Indian startups or MSMEs can self fund that kind of work, and few conventional funding routes are built to support it.

TDF, the Technology Development Fund, is the Defence Research and Development Organisation's answer. Launched in September 2016 under the Ministry of Defence's Make in India initiative, TDF was designed to provide grant in aid to Indian industries, including MSMEs and startups, as well as academic and scientific institutions, for developing defence and dual use technologies that are not currently available within India's domestic defence industry. It remains one of the largest single project grant schemes available to India's defence tech ecosystem.

The Opportunity: What TDF Actually Offers

• Substantial project level funding: the scheme funds project costs up to Rs. 50 crore, with the government's grant in aid covering up to 90 percent of total project cost, among the highest funding to cost ratios of any Indian government scheme.
• A significantly increased funding ceiling: the maximum funding per project was raised from Rs. 10 crore to Rs. 50 crore, reflecting the government's push to fund genuinely substantial, high impact defence technology development rather than smaller pilot projects.
• Flexible project timelines: the typical development period is two years, extendable up to four years for particularly large or complex projects, giving recipients realistic runway for genuinely novel technology development.
• Milestone based disbursal with an advance option: funding is paid in up to five instalments upon successful achievement of defined milestones, and advance funding is also available against a bank guarantee for startups and MSMEs that need working capital upfront.
• A defined technology stage focus: the scheme is built to support futuristic technologies that already have a proof of concept, helping convert them into prototypes ready for actual induction, bridging the gap between early validation and a deployable defence product.
• A dedicated deep tech vertical: a further corpus of Rs. 500 crore has been sanctioned specifically to establish a separate vertical for deep tech projects within TDF, with nine projects already launched under this vertical, and DRDO's network of 15 DRDO Industry Academia Centres of Excellence contributing several joint projects alongside it.
• A fully digitised application process: the entire workflow runs through the official TDF portal, from registration and profile approval to browsing open projects and submitting proposals, designed to keep the process transparent and accessible.

By December 2024, the scheme had sanctioned 80 projects worth roughly Rs. 335 crore in total, and 18 technologies developed under TDF had already been successfully transferred to end users, a genuine, if measured, track record for a scheme built around substantial engineering work rather than quick prototyping sprints.

Who is eligible

• Indian companies, startups, and MSMEs, along with academic and scientific institutions, developing defence and dual use, military plus civilian application, technologies.
• Applicants working on technology from Technology Readiness Level 3 onwards, with a clear pathway toward meeting Tri Services specifications.
• Projects demonstrating alignment with genuine national defence requirements, technological innovation, feasibility, and potential for import substitution. These are explicitly preferred in evaluation.
• Both public and private industry participants, with a particular emphasis on empowering MSMEs and startups specifically.

How the process works

1. Register on the official TDF portal and complete your industry or startup profile.
2. Verify your registered email and submit your profile for approval through the TDF admin panel.
3. Browse the projects open for application section to identify specific problem statements or technology gaps identified by the Services, Army, Navy, Air Force, Defence Production, or DRDO itself.
4. Submit a proposal aligned to an open project, demonstrating your technology's current TRL and its pathway to prototype and induction readiness.
5. A selection committee comprising experts from DRDO, the Ministry of Defence, and potentially external subject matter specialists evaluates the application against technical and strategic criteria. Shortlisted applicants may be invited for presentations or detailed discussions.
6. Once selected, funding is released in up to five instalments tied to milestone achievement, with an advance against bank guarantee option available where needed.

The Institutions Powering TDF

TDF is administered directly by DRDO, giving applicants access to a level of deep, in house defence R&D expertise that few other government schemes can match. The scheme caters specifically to the requirements of the Tri Services, Defence Production, and DRDO itself, and its deep tech vertical works in close collaboration with DRDO Industry Academia Centres of Excellence, meaning successful applicants often end up working alongside DRDO's own scientists and research infrastructure, not just receiving a cheque and a deadline.

Frequently Asked Questions

How much funding can a project actually receive under TDF?

Up to Rs. 50 crore in total project cost, with the government's grant in aid covering up to 90 percent of that cost, a significant increase from the scheme's original Rs. 10 crore ceiling.

What Technology Readiness Level does my project need to be at?

TRL 3 onwards is the general starting point, with the scheme designed to carry technologies from that early validated stage through to Tri Services ready prototypes. Proposals with a clear pathway to product realisation are given preference.

Is TDF only for large companies, or can startups genuinely apply?

Startups and MSMEs are a specific priority focus of the scheme, alongside larger industry players and academic and scientific institutions. Recent funding data shows a meaningful share of disbursed grants going specifically to MSMEs and startups rather than large defence contractors alone.

How long does a typical TDF project run?

Around two years for standard projects, with extensions of up to four years available for particularly large or technically complex projects.

Can I get funding upfront, or only after milestones are met?

Both options exist. The default model reimburses in up to five instalments tied to milestone achievement, but an advance funding option is also available against a bank guarantee for applicants who need working capital before the first milestone is reached.

The Bottom Line

TDF occupies a distinct place in India's defence tech funding landscape. It is built for genuinely substantial engineering work, proof of concept technologies that need real capital and DRDO level technical partnership to become induction ready prototypes, not quick prototyping sprints. For startups, MSMEs, and academic institutions with a validated technology concept and the ambition to build something the Indian defence industry does not currently have, TDF offers one of the highest funding ceilings and cost coverage ratios available anywhere in India's government scheme ecosystem. The practical next step is registering on the TDF portal and identifying an open project that matches your technology's current TRL and development stage.