Guide · Reviewed 6 September 2026
Leverage amplifies both gains and losses. 2:1 leverage turns 10% gains into 20%, but 10% losses into −20%. Margin calls force liquidation at worst times.
Leverage is using borrowed money to invest. Real estate uses mortgages (5:1 leverage typical). Stocks use margin (2:1 common, up to 4:1). Options have unlimited leverage. The math is simple; the psychology is hard. Most leveraged investors blow up.
How leverage works
Without leverage: Invest $100K, stock rises 10% = $10K gain = 10% return.
With 2:1 leverage: Invest $100K + borrow $100K = control $200K. Stock rises 10% = $20K gain on $100K invested = 20% return.
But if stock falls 10%: $200K position down to $180K. Your $100K is now worth $80K. −$20K loss on $100K invested = −20% loss.
Margin mechanics
- Initial margin: 50% down payment required (on most stocks). Borrow other 50%.
- Maintenance margin: Typically 25%. If equity falls below 25%, you get a margin call.
- Margin call: Broker demands you deposit more cash or they liquidate positions (often at worst time).
- Margin interest: You pay ~5–8% annually on borrowed amount.
Those three percentages are what turn a cash balance into a borrowing limit, and that limit is the number worth knowing before you place a trade rather than after — how initial and maintenance margin set your buying power works through that arithmetic step by step.
Example: Margin call disaster
You invest $100K + borrow $100K = $200K position in stocks.
Stock falls 30% → position worth $140K. Your equity: $40K. Maintenance margin (25% of $140K) = $35K. You're above minimum (barely).
Stock falls another 5% → $133K position. Your equity: $33K. Maintenance = $33.25K. Margin call! Broker liquidates you at market (worst time).
When leverage can work
- You can afford margin interest (5–8% annual cost)
- You have emergency funds (not using leverage for rent/bills)
- You're using moderate leverage (2:1, not 10:1)
- You have conviction + time horizon (not day-trading)
- You understand margin call mechanics and monitor daily
When leverage destroys wealth
- Market crashes (2008, 2020) → leveraged investors liquidated at bottom
- Using leverage for rent/bills → forced to sell winners to cover expenses
- Overconfidence → 10:1 leverage "guaranteed" to work until it doesn't
- Ignoring margin calls → brokers liquidate your best positions first
Leverage in real estate
Mortgage: 5:1 leverage (20% down). Property appreciates 3%/year → your equity grows 15%/year (3% on 5× capital). But property crash 30% → your equity destroyed (you can walk away or file bankruptcy, but credit destroyed).
Leverage in options
Options are inherently leveraged. $100 option controls $10K stock = 100:1 leverage. If stock moves 1%, option can move 50%+. Most options expire worthless. Leverage here is extreme; only for experienced traders.
Recommendation: Avoid leverage unless you truly understand margin mechanics, can afford losses, and have 6+ month emergency fund separate from leveraged positions. 90% of leveraged investors underperform buy-and-hold due to forced liquidations and margin interest costs.