In a significant recalibration of how India’s capital markets are funded, the Reserve Bank of India (RBI) has introduced sweeping changes that effectively shut the door on bank-funded proprietary trading by stock brokers and other capital market intermediaries. The amendments, notified under the Commercial Banks – Credit Facilities Directions and effective April 1, 2026, are aimed at reducing systemic risk by ensuring that all broker financing is backed by hard collateral rather than promoter guarantees or balance-sheet engineering.
The changes are expected to have far-reaching implications for broker business models, options market volumes, and overall market microstructure.
No bank funding for prop trades
At the heart of the new framework is a clear prohibition: banks shall not provide finance to capital market intermediaries (CMIs) for acquisition of securities on their own account, including proprietary trading or investments.
This marks a decisive break from past practice, where several brokers accessed bank credit lines or structured facilities that indirectly supported proprietary positions. Going forward, broker prop desks must operate almost entirely on internally generated capital.
RBI has carved out narrow exceptions only for:
- Market making in equity and debt securities
- Short-term warehousing of debt securities (up to 45 days)
- Guarantees for proprietary trading, but only if fully secured by collateral
The message is unambiguous: leverage-driven proprietary risk cannot sit on bank balance sheets.
From partial security to full collateralisation
Another major shift is the move to 100 percent collateral backing for virtually all credit facilities extended to CMIs.
“In general, all credit facilities to CMIs shall be provided on a fully secured basis,” the circular states.
Earlier, brokers could obtain bank guarantees (BGs) using a mix of fixed deposits and promoter or corporate guarantees. That route is now effectively closed.
For guarantees issued in favour of exchanges or clearing corporations:
- Minimum collateral: 50 percent
- Of this, at least 25 percent must be cash
For guarantees supporting proprietary trading:
- Facility must be fully secured
- Collateral must comprise cash, cash equivalents and government securities
- At least 50 percent must be cash
In practical terms, the old structure—where a broker could lock ₹50 of collateral and obtain a ₹100 BG using promoter guarantees—no longer works. The economic advantage of routing margins through BGs has disappeared.
Steep haircuts on equity collateral
RBI has also mandated a minimum 40 percent haircut on equity shares accepted as collateral.
This means that shares worth ₹100 will be recognised as only ₹60 for lending purposes, forcing brokers to pledge substantially more assets to maintain the same borrowing limits. Banks are also required to conduct ongoing valuation and impose margin calls in case of shortfalls.
The combined effect is a sharp rise in capital intensity for any trading activity funded via banks.
What changes for brokers
The new regime compresses leverage across broker balance sheets:
- Proprietary desks must rely primarily on own capital
- Low-margin, high-turnover strategies become less viable
- Smaller brokers with thin capital buffers may scale down or exit prop trading
- Larger brokers may segregate prop activity into separately capitalised entities
Broker managements will need to reassess return-on-equity expectations for proprietary businesses, which historically benefited from cheap and flexible bank funding.
Impact on options volumes
India’s index options market is heavily dominated by proprietary and market-making flows. With leverage curtailed and capital requirements rising, industry participants expect a moderation in ultra-high-frequency churn.
While headline volumes may soften, market veterans argue that liquidity quality could improve, with fewer “noise” trades and a greater share of volume coming from economically meaningful activity.
Marginal positives for retail
For retail investors, the impact is likely to be subtle but directionally positive. Reduced dominance of highly leveraged prop desks could mean:
- Slightly wider but more stable bid-ask spreads
- Fewer sudden liquidity vacuums during volatile periods
- Less predatory microstructure behaviour
However, the changes do not alter the fundamental risk of options trading or compensate for poor strategy or discipline.
A structural shift, not a cosmetic tweak
Taken together, the amendments signal a broader regulatory philosophy: capital markets activity must be backed by real, liquid collateral and genuine risk-bearing capital.
The RBI is effectively transitioning the system from a model of “credit-fuelled trading” to one of “capital-backed trading”.
Lower leverage, stricter collateral norms, and tighter oversight may temper growth in speculative activity—but they also make the financial system more resilient to market shocks.
For brokers, exchanges and traders alike, April 2026 marks the beginning of a new, more conservative operating environment.
