The same signal makes one trader money and costs another their account. The difference is not the entry price — it is one division you do before the trade is open.
Two traders take the same signal on the same day, at the same entry, with the same stop. One ends the month up. The other blows up the account. The signal was identical; the only thing that differed was how much each of them put behind it.
Position sizing is the part no signal can give you, because it depends on a number only you know: what your account is worth. It is also the part that decides your outcome far more than any entry price does.
Before any arithmetic, decide what a single trade is allowed to cost you. Not what you hope to make — what you are willing to lose, in money, when the stop is hit.
A common figure is 1% of the account per trade, and few traders sensibly use more than 2%. That sounds timid until you look at what it buys: at 1%, ten consecutive losses leave you down about 10% and still trading. At 10% per trade, the same ten losses are close to the end of the account. Nobody plans for ten losses in a row. They happen anyway.
Once you have that number, size follows from your stop distance. There is nothing to judge here — it is division:
Position size = risk in money ÷ (stop distance × value per unit)
On a $2,000 account risking 1%, you can lose $20 on this trade. If the stop sits $6.50 from entry on gold, and a standard lot moves about $100 for every $1 of price:
$20 ÷ ($6.50 × $100) = 0.03 lots
Verify the value per unit with your own broker before you trust it. Contract sizes differ, and this one number scales every position you will ever open — getting it wrong is not a rounding error, it is a multiplier on all your risk.
Notice what the formula does: a wider stop makes the position smaller, not riskier. The money at risk stays fixed at $20, and the size absorbs the difference. Same account, same 1%, three different signals:
Stop $3.00 away → $20 ÷ 300 = 0.06 lots
Stop $6.50 away → $20 ÷ 650 = 0.03 lots
Stop $14.00 away → $20 ÷ 1,400 = 0.014 lots
This is the answer to a question that trips up most new traders: "the stop on this signal looks far away, is it too risky?" On its own, no. A distant stop is only a problem if you keep the position size you would have used for a tight one.
On a small account the honest answer is sometimes that the trade is not available to you. If 1% of your account is $5 and the minimum position your broker allows would risk $30 at that stop distance, then taking the trade means risking 6% — and the rule you set five minutes ago is already gone.
The two legitimate ways out are to skip that particular signal, or to trade a smaller contract type if your broker offers one. The illegitimate way out — the one that feels reasonable at the time — is to decide that this trade looks especially good and 6% is fine just this once. It is never just this once.
High leverage does not increase your risk. Your position size does. Leverage only sets how much margin the broker locks up to hold that position.
The reason 1:500 or 1:1000 accounts wipe people out is not the ratio itself — it is that a large ratio makes an oversized position possible, and a trader sizing by "what can I afford to open" instead of "what can I afford to lose" will open it. Size from your stop, and the leverage number stops mattering.
Run the calculation before the position is open, when you have no money on the line and can still do arithmetic. Afterwards, every number in the formula becomes negotiable, and the one you will want to negotiate is the stop.
A trader with an average entry and disciplined sizing beats a trader with excellent entries and none of it. That is not motivational — it is just what the maths does over a hundred trades.
This article is educational and is not financial advice. Trading XAUUSD and other leveraged instruments carries a high level of risk and may not be suitable for all investors. Any figures used are illustrative, not a trade recommendation.