Minimum margin requirements, realistic risk units and why undercapitalisation causes most early failures.
Key takeaways
- Capital must support at least 40–50 risk units to survive normal variance.
- Derivative lot sizes set a practical floor for F&O participation.
- Prop funding is one way to solve size without risking household savings.
The honest answer is: enough that a single trade risks a small fraction of the total. If your strategy risks ₹2,000 per trade, an account of ₹40,000 gives you twenty losses of room — not enough for a normal streak. Forty to fifty risk units is a reasonable minimum.
Derivatives impose their own floor. A single index futures lot requires substantial margin, and option selling requires more. Traders who start with less either take positions that are too large or drift into illiquid far strikes because they are cheap.
Undercapitalisation causes a specific failure pattern: correct strategy, correct analysis, oversized positions, account gone in a normal drawdown. It looks like a skill problem and is actually an arithmetic one.
There are two solutions. Trade smaller instruments and accept modest rupee outcomes while you build skill, or use evaluated prop capital so that position size is supported by firm capital rather than savings you need for rent.
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