Margin Trading Facility - usually written as MTF or "e-margin" - is one of those products that sounds powerful and is. It also sounds dangerous and can be. This piece walks through what it actually is, what it costs at Sapphire, and the only two situations in which I think it makes sense for a normal investor to use it.
What MTF is, in one paragraph
When you buy ₹1,00,000 worth of Reliance "with MTF", you don't put up ₹1,00,000. You put up the margin - say 25%, so ₹25,000 - and Sapphire lends you the remaining ₹75,000 as a regulated loan. The shares sit in your demat account (pledged to Sapphire as collateral) and you pay daily interest on the ₹75,000 borrowed portion. When you sell, the loan is repaid, the pledge releases, and the net P&L hits your account. SEBI calls this regulated, leveraged equity trading; the framework is published in master circulars on broker margin.
What it costs at Sapphire
Two real costs to think about:
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Interest - Sapphire charges a transparent daily rate on the borrowed amount. At our current rate this works out to roughly 0.038% per day, or about 13.9% annualised. The rate is published on /pricing; we don't hide it inside a long terms-and-conditions page.
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Brokerage on the trade - same as a normal delivery trade. Flat ₹20 per executed order (or 0.03%, lower of the two). MTF doesn't change the brokerage schedule; it just changes how much cash you needed up front.
The maths: when does MTF "pay"?
If you hold ₹100,000 of stock funded by ₹25,000 of your own money + ₹75,000 borrowed at 0.038%/day:
| Holding period | Interest paid | Stock needs to rise by |
|---|---|---|
| 7 days | ~₹200 | 0.20% to break even |
| 30 days | ~₹855 | 0.86% to break even |
| 90 days | ~₹2,565 | 2.57% to break even |
| 1 year | ~₹10,402 | 10.40% to break even |
If you think a stock will move 5% over the next two months, MTF turns ₹25K of capital into roughly ₹4,000 of profit minus ~₹1,500 of interest = ₹2,500 profit on ₹25,000 - a ~10% return on your own money over 60 days. Without leverage, the same view gives you a 5% return.
If you're wrong, the same maths inverts. A 5% drop costs you ₹5,000 of equity AND the interest charge keeps accruing. That's ~₹6,500 of loss on ₹25,000 of capital - a 26% drawdown. Leverage is symmetric.
When I actually think it's useful
Two specific situations:
Short-horizon, high-conviction views in large-caps. You think Reliance is going to move 3-5% over the next 3-4 weeks ahead of a known catalyst (earnings, demerger, regulatory clearance). The catalyst date bounds your holding period, so the interest cost is finite and known. The position is large-cap so liquidity is plentiful and the margin requirement is low.
Bridge financing. Money is coming in 30 days (bonus, FD maturity, dividend) and you want to deploy now. MTF lets you take the position today and convert to delivery when the cash lands. Interest cost is bounded by the bridge period.
When it's a trap
- Mid-cap and small-cap names - higher margin requirement, much higher drawdown when something goes wrong, and exit liquidity disappears in a stress.
- Long-horizon views - interest accrues every day. 13.9% annualised is a real number; if your view takes 6 months to play out, you need a 6.9% gain just to break even.
- Adding to a losing position - MTF compounds the mistake. The position is already wrong; lev'ing it up is the textbook recipe for blowing up.
How to activate it at Sapphire
One-time setup. Open your trading account, then sign the Master Pledge Authorization through your demat (it's a single click on the onboarding screen). After that, MTF is just another product choice on the buy screen - pick "MTF" instead of "Delivery" or "Intraday", and the margin is computed automatically.
We have a Margin Calculator you can use before placing a trade to see the exact margin + interest schedule for any position size.
Disclosure: I'm a founding partner at Sapphire Broking. The views here are mine and not investment advice. The interest rate quoted is current as of February 2026; check /pricing for the live number.