How Much Money Do I Need to Start Trading Stocks?

Take a 3,000 account. Risk 1% of it on a trade, and you have 30 dollars to lose before you’re wrong.

Now put that against a real setup. A stock trades at 40, and the chart says your stop belongs at 38.40, which is 1.60 below the entry, so 30 dollars of risk divided by 1.60 a share gives 18 whole shares, a position worth 720, with 28.80 actually at risk. That trade works. The account is big enough for it.

That’s always the question: is the account big enough for the trades you actually take? No single number answers it for everyone.

What the law and your broker require

For a cash account, many brokers set no minimum deposit at all, and some set a small one. This varies, so check your broker’s account terms.

Margin changes things. FINRA’s rules require a minimum equity of 2,000 for a margin account, and brokers can set more. Day trading on margin used to bring in the pattern day trader rule, which was a count: at least four day trades in a margin account over five business days, when they made up more than 6% of its trades in that time. Once flagged, the account needed 25,000 to keep day trading. FINRA replaced the count and that floor on June 4, 2026. Some brokers may keep applying the old rule until they switch, no later than October 20, 2027, so ask yours which one it runs; is the pattern day trader rule still in effect covers the transition.

A cash account was never under the pattern day trader rule. Settlement is its constraint instead: under T+1, sale proceeds settle one business day after the trade, and reusing unsettled money the wrong way leads to good faith violations. The case for starting there anyway is made in start in a cash account.

The sizing test

In general form, so you can redo it with your own figures:

Small accounts break on the second line. You can’t size an expensive stock with a wide stop at all when one share already carries more risk than the budget allows. A 1,000 account risking 1% has 10 dollars to lose, and a 400 stock with a 16 stop puts 16 at risk on a single share, so you either skip the trade, tighten the stop to a level the chart doesn’t support, or break your own risk rule.

Skip it. That also means price and volatility shape a small account’s watchlist.

Costs as a share of your risk

Measure costs against the risk on the trade. Account size tells you less.

The spread is a per-share cost. Buy at the ask, later sell at the bid, and you give up roughly the full width of the spread on each share over the round trip.

Many brokers charge no commission on ordinary US stock trades. Fixed charges still turn up, as fees on certain order types, on some account services or on data, and in that example every one of them weighs ten times as much on the smaller account. A stock with a wide spread relative to your stop is expensive at any size, and how to tell if a stock is too illiquid to trade shows how to spot one before you enter.

Putting a number on it

Write down three figures:

1. Your risk percent.
2. Your typical stop distance on the stocks you trade.
3. The smallest position you’d bother taking.

Multiply the second and third, divide by the first, and compare the result with what you have. If you come up short, trade cheaper stocks, accept tighter setups only where the chart supports them, or keep saving while you practice with small size. The trade risk worksheet does the same sum per trade.

Anyone who quotes one figure for everyone is skipping the part that depends on you.