Leverage is the reason a $1,000 account can trade $100,000 of currency. It is also the reason most such accounts do not survive their first year. Neither fact is about leverage being dangerous — it is about what it does to the size of a normal mistake.
Margin is a deposit, not a cost
To control a position larger than your balance, your broker requires a portion of it to be set aside as collateral. That is margin. It is not a fee and not spent — it is ring-fenced while the trade is open and released when it closes.
The ratio between position size and required margin is the leverage:
- 1:30 → 3.33% margin. A $100,000 position needs $3,333.
- 1:100 → 1% margin. The same position needs $1,000.
- 1:500 → 0.2% margin. The same position needs $200.
Notice what does not change across those rows: the position is $100,000 in every case. Leverage changes how much of your balance is locked, not how much you are exposed to. That distinction is the one most beginners miss.
Leverage does not change your risk — size does
This is the most useful idea in the lesson.
A one-pip move on one standard lot of EUR/USD is about $10. That is true at 1:30 and it is true at 1:500. The market does not know or care what your broker's margin requirement is.
So higher leverage does not make each trade riskier. It makes a bigger trade possible, and bigger trades are riskier. The danger is not the multiplier; it is what the multiplier permits.
Two traders with $2,000 accounts, both buying EUR/USD, both stopping out after 30 pips:
- Trader A takes 0.2 lots → $2/pip → loses $60, i.e. 3% of the account.
- Trader B takes 2.0 lots → $20/pip → loses $600, i.e. 30%.
Same pair, same analysis, same stop. Trader B was not less accurate — only larger. And Trader B now needs a 43% gain simply to return to where they started.
The account maths that actually matters
Your platform shows several numbers that only become interesting under stress:
- Balance — cash if everything closed at breakeven.
- Equity — balance plus or minus open profit and loss. The live number.
- Used margin — collateral locked by open positions.
- Free margin — equity minus used margin. Room for price to move against you.
- Margin level — equity ÷ used margin × 100, as a percentage.
Margin level is the health reading. As losses accumulate, equity falls while used margin stays fixed, so the percentage drops.
At a broker-set threshold — often 100% — you get a margin call: a warning, and no new positions. Lower still — commonly 50% — is the stop-out, where the broker begins closing positions automatically, largest loser first, to protect itself from your account going negative.
A stop-out is not a suggestion. It is liquidation at market, at the worst possible moment, and it is how an account goes from "drawdown" to "over" without any single catastrophic trade.
How the spiral works
Over-leverage rarely kills in one trade. The sequence is almost always this: position too large → normal adverse move → free margin shrinks → no room to hold the position through ordinary noise → forced out at the worst point, frequently just before the level would have held.
The trader concludes their analysis was wrong. Usually it was their size.
Using it sanely
- Pick the leverage that lets you take the position your risk rule allows — no more.
- Keep used margin a small fraction of equity. A crowded account has no room to breathe.
- Treat high leverage as optionality, not an instruction. 1:500 available does not mean 1:500 used.
- Regulators cap retail leverage in many jurisdictions for a reason — offshore 1:1000 is a marketing feature, not an advantage.
What to take from this
- Margin is collateral set aside, not a fee.
- Leverage changes how much balance is locked — position size is what sets risk.
- A pip is worth the same regardless of your leverage setting.
- Margin level = equity ÷ used margin; falling levels trigger calls and stop-outs.
- Over-leverage kills by removing the room to be temporarily wrong.
Next, the last piece of the mechanics module: the three ways traders analyse a market, and what each is genuinely good for.