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Margin Calculator
Calculate margin requirements, buying power, and margin call prices. Currently calculating in US Dollar.
Position Details
Enter your account and position information
50%
Regulation T requires 50% for most stocks
25%
FINRA minimum is 25%
8%
Position Value
$40,000
400 shares @ $100
Margin Borrowed
$15,000
1.60x leverage
Margin Call Price
$50
50.0% buffer
Buying Power
$50,000
Up to 500 shares
Margin Interest Costs
Daily
$3
Monthly
$100
Annual
$1,200
Equity at Different Prices
How your equity changes as the stock price moves
Risk Scenarios
Impact of price drops on your leveraged position
| Price Drop | New Price | Equity | P/L | Return | Status |
|---|---|---|---|---|---|
| -10% | $90 | $21,000 | -$4,000 | -16.0% | Safe |
| -20% | $80 | $17,000 | -$8,000 | -32.0% | Safe |
| -30% | $70 | $13,000 | -$12,000 | -48.0% | Safe |
| -40% | $60 | $9,000 | -$16,000 | -64.0% | Safe |
| -50% | $50 | $5,000 | -$20,000 | -80.0% | Safe |
Understanding Margin Trading
Key Terms
- Initial Margin: Required deposit to open a position (typically 50%)
- Maintenance Margin: Minimum equity to avoid margin call (typically 25%)
- Buying Power: Maximum position size with your equity
Risks of Margin
- Losses are magnified by leverage
- Interest charges accumulate daily
- Margin calls can force selling at worst time
- You can lose more than your initial investment
Margin trading involves significant risk. Only experienced investors should use margin, and only with money they can afford to lose.
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