Margin trading lets you borrow money from your broker to buy more securities than your cash alone would cover. The pitch is simple: more buying power, more upside. The part that gets glossed over is that the debt is real, the interest clock never stops, and the broker — not you — decides when a losing position gets sold. This is general information, not financial advice; margin is a leverage tool, not a strategy, and it deserves more caution than most new investors give it.
What changed in 2026
- Margin rates track short-term interest rates, which stayed elevated relative to the near-zero years, so the cost of carrying a margin balance is higher than many investors remember from a decade ago. Verify your broker's current rate before assuming a number.
- More brokers offer instant margin approval inside standard trading apps, which means investors can end up trading on borrowed money without fully choosing to.
- Volatility spikes remain sharp and fast, and same-day margin calls triggered by a single bad session are now common with algorithmic, high-speed markets.
How margin actually works
When you buy on margin, you put up a portion of the purchase price (the initial margin) and borrow the rest from your broker, using your account's securities as collateral. Regulations typically require a minimum initial margin and an ongoing "maintenance margin" — a floor on how much equity you must keep in the account relative to the loan.
If your account's equity falls below that maintenance floor, you get a margin call: deposit more cash, add securities, or the broker sells positions for you, often at the worst possible moment, with no obligation to consult you first or to sell in an order you would prefer.
Where the risk actually bites
- Losses are amplified in both directions. Borrowing to double your position size roughly doubles your percentage gains and losses on the borrowed portion.
- Interest is a fixed cost. Whether the trade works out or not, margin interest accrues daily and quietly drags on returns, especially over longer holding periods.
- Liquidation timing is out of your hands. A broker can sell during a flash crash or after-hours gap, locking in losses you might have recovered from if you had simply waited.
- A margin call can force you to sell winners to cover losers, disrupting a portfolio strategy that was otherwise sound.
Margin vs. cash accounts
| Factor |
Cash account |
Margin account |
| Buying power |
Limited to deposited cash |
Cash plus broker loan |
| Downside |
Limited to amount invested |
Can exceed original investment |
| Forced selling |
Not possible |
Possible via margin call |
| Ongoing cost |
None |
Daily interest on borrowed amount |
| Best suited for |
Most long-term investors |
Experienced, risk-tolerant traders |
When margin might make sense
Short-term traders with strict risk controls, hedged positions, or professionals managing collateral across strategies sometimes use margin deliberately, with position sizing that assumes a call could happen. That is a different activity from a buy-and-hold investor turning on margin to size up a long-term index position, where the extra risk rarely matches the modest extra return. If you are weighing a steady approach instead, dollar-cost averaging into ETFs is the lower-drama alternative for building a position over time.
FAQ
What triggers a margin call?
Your account equity falling below the broker's maintenance margin requirement, usually because the value of your holdings dropped.
Can I lose more than I put in?
Yes. Unlike a cash account, a margin account can leave you owing money even after all positions are sold, because the loan does not disappear with the stock price.
Is margin the same as options leverage?
No. Margin is a cash loan against your portfolio; options create leverage through contract structure. Both amplify risk, but the mechanics and worst-case outcomes differ.
Do all brokers use the same maintenance margin?
No — minimums vary by broker and by security, and brokers can raise requirements without notice during volatile periods. Check your specific broker's current terms.
Where to go next
For more on building a portfolio without leverage, see growth vs. value stocks in 2026, factor investing explained, and what is dollar-cost averaging into ETFs.