Cash Accounts vs Margin Accounts
Brokers usually offer two account types. The difference is not cosmetic: one can only spend your own money, and the other can lend you more.
Why this matters for beginners
Margin turns an ordinary decline into a forced sale at the worst moment. Choosing a cash account is the simplest structural protection a beginner can put in place.
Main explanation
A cash account can only buy with settled money you deposited. The worst case is that a holding falls to zero, which is bad but bounded by what you invested.
A margin account lets you borrow against your holdings. Gains and losses are both multiplied, and interest accrues daily on the borrowed amount.
If the account value falls below the broker's required level, the broker issues a margin call. If you do not add cash quickly, the broker can sell your holdings without asking.
Margin accounts often also allow lending your shares out and short selling. None of these features is required to build a long-term portfolio.
Example using a real company
Ten thousand of your own money in a share that falls 30 percent leaves 7,000. The same 10,000 with another 10,000 borrowed leaves 4,000 after the same fall, plus interest owed.
- →Cash account: a 30 percent fall costs 30 percent of what you invested.
- →Two-times margin: the same 30 percent fall costs about 60 percent of your own money, before interest.
Common beginner mistakes
- ✕Opening a margin account by default because it was the pre-selected option.
- ✕Treating available margin as extra money rather than debt.
- ✕Believing a stop order removes margin call risk.
Key terms
- Margin
- Money borrowed from a broker against your holdings.
- Margin call
- A demand to add funds when account value falls too far.
- Forced liquidation
- The broker selling your holdings to repay a loan.
Key takeaways
- 01A cash account limits losses to money you actually invested.
- 02Margin multiplies both directions and adds interest.
- 03Margin calls can force sales at the worst possible prices.
Check yourself
- 01A margin account can lose more of your own money than a cash account in the same decline.
- 02A margin call can result in the broker selling holdings without your approval.
- 03Available margin is spare money that belongs to you.
Try the concept on a real company
Read the risk section for a volatile company in the Analyzer, then imagine that same drop with borrowed money attached. That is the scenario margin creates.
Educational examples only. Not buy or sell recommendations.