A brokerage account is an investment account you open with a licensed brokerage firm to buy, hold and sell securities such as stocks, bonds, mutual funds and exchange-traded funds. You deposit money, place orders through the firm, and the investments you buy are held in the account in your name. It is not a bank account, and an ordinary one is taxable, meaning the gains, dividends and interest it produces can create a tax bill.

The account is simply the container; what you put in it is up to you. Understanding the two main types, and what is and is not protected, is most of what a first-time investor needs before opening one.

How a brokerage account works

Once the account is open and funded, you use it to place orders to buy or sell securities, and the firm executes those orders on an exchange or market. The securities you own sit in the account, where you can track their value, reinvest dividends and eventually sell. Many brokerages today charge no commission on US stock and ETF trades, though other costs, such as fund expense ratios and the spread on less liquid securities, still apply.

Money in a brokerage account is meant to be invested, not spent like checking. You can usually withdraw cash by transferring it back to a linked bank account, but if the money is tied up in investments you first have to sell them, and a sale can have tax consequences. The account is a long-term tool for building and holding a portfolio, not a place to park spending money.

Opening one is straightforward. A firm will ask for identifying details such as your name, address, date of birth and Social Security number, which it is required to collect under rules meant to verify customers and prevent fraud. You then link a bank account to fund it. Many brokerages now let you buy fractional shares, so you can invest a set dollar amount rather than the full price of a single share, which lowers the entry point for a beginner. There is usually no minimum deposit to open a basic cash account, though specific features can carry their own requirements.

Cash accounts and margin accounts

The US Securities and Exchange Commission's investor education site draws the main distinction. In a cash account, you must pay the full price for any securities you buy, and you cannot borrow from the firm to pay for trades. It is the simpler and lower-risk choice, and it is what most beginners should use.

A margin account is different. It lets the brokerage firm lend you money to buy securities, using the investments in your account as collateral, and you pay interest on what you borrow. Margin can amplify gains, but it amplifies losses the same way. The SEC warns of two specific dangers. If the securities you bought on margin fall in value, the firm can require you to deposit cash or additional securities immediately, a demand known as a margin call. And the firm can sell your securities without notifying you, potentially at a substantial loss, to cover the shortfall. Brokerage firms may let you hold both a cash account and a margin account at the same time.

Taxable brokerage accounts versus retirement accounts

A standard brokerage account is a taxable account. There is no limit on how much you can put in, and no penalty for taking money out, but there is also no special tax break. When you sell an investment for more than you paid, you may owe capital gains tax, and dividends and interest are generally taxable in the year you receive them. Our guide to how capital gains are taxed covers the short-term and long-term rates in detail.

That is the trade-off against tax-advantaged accounts such as an IRA or a 401(k), which offer tax benefits but cap contributions and restrict withdrawals. A taxable brokerage account has neither the benefits nor the restrictions, which makes it the flexible, all-purpose option for money you may want before retirement or beyond the contribution limits of those plans.

What a brokerage account does and does not protect

A common misunderstanding is what the safety net covers. Securities held at a US brokerage that is a member of the Securities Investor Protection Corporation are protected by SIPC up to $500,000 per customer, including up to $250,000 for cash, if the brokerage firm fails and your assets go missing. That protection is about the failure of the firm, not the performance of your investments. SIPC does not cover a decline in the market value of what you own; if a stock you hold drops, that loss is yours. It is the opposite of FDIC insurance on a bank deposit, which protects the dollar value of the deposit itself.

For most people the account is the gateway to long-term investing, and what goes in it matters more than the wrapper. Low-cost, diversified building blocks such as an index fund are a common starting point, and the structure of pooled funds is set out in our comparison of ETFs and mutual funds.

The bottom line

A brokerage account is the standard way to buy and hold investments through a licensed firm. Start with the type: a cash account for simplicity, a margin account only if you understand that borrowing magnifies losses and that the firm can issue a margin call and sell your holdings without notice. Remember that an ordinary brokerage account is taxable, and that SIPC protects you against the firm failing, never against your investments falling in value.