Sam passed the fit test in Lesson 2 with one question left on his legal pad: is $6,000 actually enough?

So he goes back to the example trade from Lesson 1: What Is Day Trading? Buy 200 shares of a made-up stock, XYZ, at $52.00, with a stop at $51.25 and a target at $53.50. He multiplies it out and frowns. 200 shares at $52 is $10,400. That one trade costs more than his whole account.

Does that mean he's too small to start? Or does it mean the trade needs to shrink to fit him?

In 30 seconds

  • The $25,000 pattern day trader minimum has been replaced. To trade on MarginMargin is money borrowed from your broker, secured by the cash and securities in your account, that lets you hold a larger position than your own cash would allow. For example, with the standard 50% initial margin, $10,000 of equity can buyRead definition → you now need at least $2,000 of equity, and a cash account has no regulatory minimum at all.
  • The amount you can start with is set by rules and your broker. The amount you should start with is set by you: money you can lose entirely, large enough that risking 1% per trade still buys a real position.
  • Small accounts can follow the same rules as big ones. They just get smaller positions, fewer trades per day in a cash account, and fixed costs that bite harder.
  • The cheapest starting amount is $0: paper trading lets you learn before any real money is at risk.

By the end of this lesson you'll know the real minimums for cash and margin accounts, how to scale any trade to your account size, and how to choose a starting number you won't regret. If you're new, start with Lesson 2: Is Day Trading Right for You?

What is the minimum amount you need to start day trading?

There is no regulatory minimum to day trade US stocks in a cash account, and a margin account needs at least $2,000 of equity. The old $25,000 pattern day trader minimum no longer applies.

Think of these minimums like the age for a driving licence. They tell you when you're allowed on the road. Whether you're ready for the highway is a separate question.

FINRA replaced the pattern day trader rules with new intraday margin standards that took effect on June 4, 2026, and brokers can phase the change in until October 20, 2027 (FINRA Regulatory Notice 26-10). Until your broker switches, its old rules may still apply to your account. Lesson 10: The PDT Rule Explained covers what changed.

Account type
Cash account
Regulatory minimum
None (your broker may set a deposit minimum)
What you can do
Trade with money you've deposited, no borrowing
The catch
Money from a sale settles one business day later
Account type
Margin account
Regulatory minimum
$2,000 of equity
What you can do
Borrow from your broker for extra buying power
The catch
You can lose more than you put in

Two terms in that table matter. A cash account is a brokerage account where you pay in full for everything you buy. A margin account lets you borrow from your broker, and FINRA says you must keep at least $2,000 of equity in it to trade on margin (FINRA). Lesson 17: Margin vs. Cash Accounts compares them in full.

So the door is open at almost any amount. The harder question is what happens once you're inside.

Why is the minimum not the amount you should start with?

The minimum lets you place a trade, but your account size decides how big each trade can be once you follow a basic risk rule. Below a certain size, the rule leaves you with positions too small to be worth taking.

The rule this course uses is the 1% rule: never risk more than 1% of your account on one trade. "Risk" means the money you lose if your stop is hit. Lesson 52: Position Sizing for Beginners teaches the full method. For now, one line of maths is enough:

Shares = (account × 1%) ÷ stop distance per share

Here is the Lesson 1 XYZ trade ($52.00 entry, $0.75 stop distance, $1.50 target distance) sized to four different accounts:

Account
$500
1% risk
$5
Shares
6
Position value
$312
Gain if target hit
$9
Account
$2,000
1% risk
$20
Shares
26
Position value
$1,352
Gain if target hit
$39
Account
$6,000
1% risk
$60
Shares
80
Position value
$4,160
Gain if target hit
$120
Account
$10,000
1% risk
$100
Shares
133
Position value
$6,916
Gain if target hit
$199.50

DayTradingToolkit calculation, hypothetical trade, before costs. Shares are rounded down.

Every account follows the same rule and risks the same 1%. What changes is how much room the costs take up. Picture a hypothetical $30 a month charting or data subscription. That's $360 a year, which is 72% of a $500 account, 18% of $2,000 and 6% of $6,000. On the smallest account, the bills can sink you before any trade does.

Losing streaks feel different by size, too.

Five losses in a row at 1% cost about 5% of any account. On a small one, it's harder to sit through without breaking the rule.

A small account can still follow good rules. It just leaves less room for costs and nerves, which is why the next step is choosing your number on purpose.

How do you choose your starting amount?

Choose your starting amount in three steps: start at $0 on paper, cap it at money you can afford to lose entirely, then check that 1% of it still buys a position worth taking on the stocks you'd trade.

  1. Start at $0. A paper trading account uses simulated money, so your first months of mistakes cost nothing. This course moves you to real money much later, in small steps.
  2. Set your ceiling. Your ceiling is the amount that passed the money test in Lesson 2: money you could lose entirely without changing your life. Never go above it, however good a setup looks.
  3. Check your floor. Run the 1% maths on a stock you'd actually trade. If the answer is a handful of shares, or your monthly costs would eat a big slice of the account each year, keep paper trading and saving until the numbers work.

If your ceiling sits below your floor, keep learning on paper while you build the account.

What can Sam do with $6,000?

Sam's $6,000 is enough to learn with, but not enough to live on. Here is the Lesson 1 trade scaled to his account, with costs.

The Lesson 1 XYZ trade, sized for Sam's $6,000 (hypothetical)

Account size$6,000
times Risk per trade (the 1% rule)1%
equals Risk budget$60
divided by Stop distance ($52.00 entry, $51.25 stop)$0.75 a share
equals Shares Sam can buy80 shares ($4,160 position)

Now add costs. Assume $0 commission and $0.02 a share of SlippageSlippage is the difference between the price you expected to receive when placing a trade and the actual fill price you got — it occurs because the market moved between when you placed the order and when it was executed, or because you usedRead definition → each way, which is $3.20 for the round trip (tiny regulatory fees on the sale are left out). If the stop is hit, Sam loses $63.20. If the target is hit, he makes $116.80.

Compare that with the original 200-share trade. It would risk $150, which is 2.5% of Sam's account, and the $10,400 position wouldn't even fit in a $6,000 cash account. Same chart, same plan, a smaller size.

There's one more limit. In a cash account, money from a sale settles one business day after the trade under the T+1 cycle (Investor.gov). Buying and then selling before you've paid is called freeriding, and the broker can freeze your account for 90 days (Investor.gov). With $4,160 tied up in one full-size trade, Sam can make about one trade like this a day.

And the income? Lesson 8: Realistic Day Trading Income runs those numbers on his $6,000. The short version: it's tuition money, and that's all it needs to be.

Sam writes it under his fit-test notes: "$6,000 = 80 shares of XYZ. One trade a day. Enough to learn."

Myth and fact

Myth The more money you start with, the faster you'll learn.
Fact You learn from repetitions and honest review, and repetitions on paper are free. A bigger account only makes each mistake more expensive. Start with the smallest amount that lets you follow your rules.

Your turn: find your starting number (10 minutes)

0 of 6 done

Check your understanding

Check your understanding

What is the minimum equity FINRA requires to trade on margin?

Check your understanding

Sam has $6,000 and follows the 1% rule. His stop is $0.75 below his entry. How many shares can he buy?

Check your understanding

Sam sells a stock in his cash account on Monday. When is the money from that sale settled?

Key takeaways

  • A cash account has no regulatory minimum; trading on margin needs $2,000 of equity. Check whether your broker has switched to the new rules yet.
  • Shares = (account × 1%) ÷ stop distance. Any account can follow that rule, but small ones get small positions.
  • Fixed monthly costs take a much bigger share of a small account, so count them before you start.
  • Your starting amount sits between a ceiling (money you can lose entirely) and a floor (enough for a position worth taking). Below the floor, keep paper trading.
  • Sam's $6,000 buys about 80 shares of the XYZ example and one full-size trade a day in a cash account.

Frequently asked questions

Can I start day trading with $100?
Technically yes, in a cash account if your broker allows it. At 1% risk, though, you'd risk $1 a trade, which on most stocks buys one or two shares, and any monthly cost would swamp the account. A $100 account is better used as a small extra while you paper trade, or saved toward a larger start.
How can I start day trading with no money?
You can start learning with no money by paper trading. A paper account uses simulated money and real market prices, so you can practise the whole routine for free. Lesson 84: Why Paper Trading Is Essential shows how to make it count. You can't place real trades without funding an account, and borrowing to trade is a clear sign to wait.
My broker still warns me about pattern day trading. Why?
Brokers can phase in the new intraday margin rules until October 20, 2027, so some still apply the old pattern day trader limits. AskThe ask is the lowest price a seller is currently willing to accept. When you buy with a market order, you pay the ask.Read definition → your broker when its switch happens. The full PDT guide tracks what's changed.
Do I need to pay for tools before I start?
No. Free charting and your broker's own platform are enough to learn the basics. Lesson 20: Free vs. Paid Trading Tools explains which tools are worth paying for, and when. Until then, every monthly fee is a cost your account has to beat.
Should I add more money if I lose my starting amount?
Not straight away. Losing your whole starting amount is a signal to stop, go back to paper trading and find out what went wrong. Add money only when you've fixed the cause and the new amount still passes the money test from Lesson 2.

Up next: is a noon shift enough time?

Sam has his number: 80 shares, one trade a day, money he can afford to lose. But his shift starts at noon. Are a few free hours each morning enough to learn this properly? Lesson 4: How Much Time Does Day Trading Take? answers that.

Disclaimer

This lesson is for education only and isn't financial advice. The trades and figures are hypothetical, and account rules vary by broker, so check yours before you fund an account. Day trading carries a high risk of loss, including losing all the money you trade, and trading on margin can lose more than you deposit. Never trade with money you can't afford to lose. Read our full disclaimer.

Article Sources

DayTradingToolkit builds every lesson on primary sources. These are the ones used here.