RBI’s New Collateral Rule to Raise Funding Costs for Indian Proprietary Trading Firms from July 1

Key Takeaways

1. The Reserve Bank of India (RBI) will require bank guarantees used for capital market trading to be fully backed by collateral from July 1, 2026, with at least 50% in cash.
    
2. The move follows recent steps, including the February 1, 2026 increase in securities transaction tax on equity derivatives, aimed at reducing excessive market speculation.

What has RBI Changed for Proprietary Trading Firms from July 1?

The RBI will implement new rules from July 1, 2026, requiring bank guarantees issued for capital market activities to be fully secured by collateral. At least 50% of that collateral must be cash. The rule affects Indian proprietary trading firms and stockbrokers that depend on bank-backed funding to increase trading capacity. 

In the short term, firms may face higher funding costs. In the long term, the rule could reduce financial risk for banks but lower market liquidity.

The new framework will reduce the amount firms can trade against pledged assets. According to Karthik P, Partner at Karna Stock Broking LLP, effective trading capacity could fall from around 1.7 times to nearly 0.85 times under the revised system. 

Smaller trading firms with limited capital are expected to face the biggest challenge because more funds will remain locked as collateral.

How Will RBI’s New Rule Affect Indian Traders and Investors?

The immediate impact will be higher capital requirements for proprietary trading firms. Lower leverage may reduce activity in cash-futures arbitrage, options market making, and index arbitrage. Retail investors may notice slightly lower liquidity in some market segments if domestic firms reduce trading volumes.

A LoansJagat financial insight shows that 77% of India’s personal loan market by volume in FY26 was driven by fintech-led lenders. This highlights how financial businesses are adapting to stricter regulations through technology and diversified funding models. LoansJagat stated, “Loan Apps Just Took Over India’s Personal Loan Race”, published on June 3, 2026.

Why Do Experts Believe Domestic Firms Face Greater Pressure?

Tanmay Kurkoti, Founder of QCAlpha Advisors, said the new rule affects Indian proprietary desks much more than foreign high-frequency trading firms. Foreign firms operating through the Foreign Portfolio Investor (FPI) route or GIFT IFSC are generally outside the scope of this requirement and can also access standby letters of credit from parent companies.

Experts believe firms can reduce the impact by relying more on internal capital, diversifying funding sources, and improving capital efficiency. Larger brokerages with stronger balance sheets are expected to adjust more easily, while smaller firms may need to redesign their funding models.

Conclusion

The RBI’s new collateral requirement marks another important step towards reducing financial risk in India’s capital markets. While the rule strengthens banking safeguards, it also increases funding costs for domestic proprietary trading firms. The coming quarters will show how quickly Indian firms adapt to the new funding environment while maintaining market competitiveness.

FAQs

Why are RBI’s new rules affecting proprietary trading firms?
Proprietary trading firms use their own money to trade stocks, derivatives, and other securities. RBI’s new collateral rules increase their funding requirements, reducing the amount they can trade with borrowed support.

What is the biggest impact of RBI’s new funding rule on prop trading firms?
The new rule locks more capital as collateral, increasing funding costs and reducing trading capacity. Smaller Indian firms that rely on bank guarantees are expected to face the greatest pressure.