This is not investment advice. The information provided is for educational and informational purposes only and does not constitute a recommendation to buy or sell any financial product.
Margin trading lets you borrow from your broker to trade more than your cash. The leverage is real; the costs and risks are also real. The framework below is what separates margin traders who survive from those who don't.
This article is a practical view on margin trading: how it works, what it costs, what the risks are, and when to use it.
How margin works
A margin account lets you borrow from your broker. The borrowed amount is secured by the cash and securities in your account. The broker charges interest on the borrowed amount.
In the US, the regulatory limit is 50% of the purchase price (Reg-T). In Europe, ESMA has tighter limits; the exact percentage depends on the instrument and the jurisdiction.
Example: a $50,000 cash account. With margin, you can buy up to $100,000 of stock. The $50,000 you don't have is borrowed from the broker, secured by the stock.
The cost of margin
The interest rate is the cost. In 2026, typical retail margin rates are 6-12% per year, depending on the broker and the borrowed amount.
The interest is charged monthly on the average borrowed amount. A $50,000 margin loan at 8% for a year costs $4,000 in interest, or about $333 per month.
Some brokers tier the rate:
- $0-25,000 borrowed: 9-10%
- $25,000-100,000: 8-9%
- $100,000-1M: 7-8%
- $1M+: 6-7% (negotiable)
The interest is a real drag on returns. A 2× leveraged position needs to outperform the unleveraged position by more than the interest cost. At 8% interest, the leveraged position needs to return 16% (vs 8% unleveraged) just to break even on the carry.
The margin call
The margin call is the main risk. If your account equity drops below the maintenance margin (typically 25-30% of the position value for stocks), the broker issues a margin call. You have 1-3 business days to deposit additional cash or sell positions.
If you don't meet the call, the broker closes positions at the current market price. The broker doesn't need your permission. The closure is at the worst possible price (in a volatile market, the position can be closed at a significantly lower price than the margin call level).
The pattern: a margin call in a volatile market is a worst-case scenario. The position is force-closed at the worst price, locking in a loss that exceeds the original margin call amount.
The fix: keep the account well above the maintenance margin (50%+ equity, not 25-30% minimum). The buffer is what protects against forced closure.
What can go wrong
Three main patterns:
1. Margin call in a fast market
A trader who holds a leveraged position through a volatile period can be force-closed at the worst price. The buffer (50%+ equity) protects against normal volatility, not against a market crash.
The fix: reduce position size before expected volatility (earnings, central bank meetings, market opens). Close leveraged positions before major events, or use a stop-loss to close the position before the volatility hits.
2. Interest cost exceeds the leverage benefit
A trader who holds a leveraged position for 6+ months can pay more in interest than the position earns. The break-even calculation: a 2× leveraged position at 8% interest needs to return 16% per year to break even on the carry. Most long-term positions don't return 16% per year.
The fix: use leverage only for short-term trades where the carry is small. A 2-week leveraged position at 8% annual interest costs about 0.3% of the position. A 6-month position costs 4%. The cost accumulates with time.
3. Over-leveraging a single position
A trader who uses 2× margin to buy a single stock that's 60% of the account is effectively running a 120% position. A 30% drop in the stock is a 36% drawdown on the account. The leverage amplifies the concentration.
The fix: cap the position size before applying leverage. 20-25% of the account in cash is a reasonable concentration limit. Adding 2× leverage makes it 40-50% — still a high concentration but manageable.
When margin makes sense
Three scenarios:
- Short-term tactical trades (1-4 weeks). A trader who plans to close the position before interest accumulates. The leverage amplifies the return; the interest cost is small.
- Hedging. A long-term investor who wants to add a hedge (e.g., a short position or a put option) needs margin to run the hedge without selling the long position.
- Short selling. Margin accounts are required for short selling in most jurisdictions. The margin is the collateral for the short position.
When margin doesn't make sense
Three scenarios:
- Long-term buy-and-hold. The interest cost erodes returns. Cash positions or unleveraged ETFs are appropriate.
- Concentrating positions. Margin amplifies concentration. A 30% position with 2× margin is a 60% effective position. The risk is high.
- Holding through volatile periods. The margin call risk is real. Close the position before the volatility or reduce the position size.
How to evaluate
When deciding whether to use margin, ask:
- What's the holding period? (Days to weeks: margin can be cost-effective. Months to years: the interest cost is too high.)
- What's the volatility of the position? (Higher volatility: higher margin call risk. Lower volatility: more margin headroom.)
- What's the expected return? (If below the interest cost, the leverage is destroying value.)
- What's the concentration? (Margin amplifies concentration. A 30% concentration with 2× margin is a 60% effective position.)
- What's the liquidity? (Low-liquidity positions are hard to exit at the right price. Margin amplifies the exit cost.)
The answers to these questions are what determine whether margin is the right tool. The decision is mechanical: if the expected return on the leveraged position exceeds the interest cost and the position sizing is within your risk tolerance, margin is appropriate.
FAQ
How much can I borrow on margin?
In the US, the regulatory limit is 50% of the purchase price for most stocks. So a $50,000 cash account can buy up to $100,000 of stock, borrowing $50,000. Some brokers offer higher leverage for portfolio margin accounts, but the requirements are stricter.
What's the typical margin interest rate?
In 2026, the typical rate is 6-12% per year for retail accounts, depending on the broker and the loan size. Larger accounts get better rates.
What happens if I can't meet a margin call?
The broker will close some or all of your positions to bring the account back to the maintenance margin requirement. The broker doesn't need your permission, and the position closures are at market prices.
Is margin trading risky?
Yes, but the risk is manageable. The risk comes from the combination of leverage, concentration, and volatility. The fix is position sizing, not avoiding margin entirely.
Related resources
- Brokerage Fees → Margin Rates Comparison
- Beginner Guides → What Is Margin Trading
- Best Stock Brokers
Where to start
If you want to use margin in your stock trading, the practical first step is to set explicit position size limits and interest cost budgets before placing the trade. See our broker table for the current list of margin-friendly platforms with transparent margin schedules.