The one formula you need
On most brokers, 1 standard lot of XAUUSD = 100 oz, so:
- 1.00 lot: $1 move in gold = $100
- 0.10 lot: $1 move = $10
- 0.01 lot: $1 move = $1
To size any gold trade:
Lots = Risk in $ ÷ (Stop distance in $ × 100)
Example: you risk $10 with a $5 stop. $10 ÷ ($5 × 100) = 0.02 lots.
Always measure your stop in dollars of gold price (for example, entry 4,150.00, stop 4,145.00 = $5), not in “pips”. Brokers define pips on gold differently, but a dollar is always a dollar.
Worked examples
We’ll use 1% risk per trade, a common rule, and two stop sizes: a tight intraday stop of $5 and a more realistic $10 stop for volatile sessions.
| Account | 1% risk | Lot size, $5 stop | Lot size, $10 stop |
|---|---|---|---|
| $100 | $1 | 0.002 (below the 0.01 minimum) | 0.001 (below the minimum) |
| $500 | $5 | 0.01 | 0.005 (below the minimum) |
| $1,000 | $10 | 0.02 | 0.01 |
| $5,000 | $50 | 0.10 | 0.05 |
$100 account
Even 0.01 lots is too big for 1% risk. At 0.01 lots, a $5 stop risks $5, or 5% of the account, and a $10 stop risks 10%. Three or four losing trades in a row (which happens to everyone) can take a big chunk of the account. Many traders use a $100 account to practise execution and journaling, not to chase returns.
$500 account
0.01 lots fits 1% risk only with a $5 stop. On news days or at the London open, gold can easily need more room than that. Either accept slightly higher risk (2% with a $10 stop) or skip those sessions.
$1,000 account
This is where gold starts to become workable: 0.02 lots with a $5 stop, or 0.01 lots with a $10 stop, both at 1% risk.
Margin is not risk
Leverage decides how big a position you’re allowed to open. It doesn’t change how much you lose per dollar move.
With gold near $4,150, 0.01 lot (1 oz) needs about: - $41.50 margin at 1:100 - $13.80 at 1:300 - $8.30 at 1:500
So a $100 account at 1:500 could technically open 0.10 lots or more. But at 0.10 lots, a normal $10 move against you is $100: the whole account. That’s how small accounts get wiped out in a single session.
Five rules for small gold accounts
- Size from your stop, every time. Use the position size calculator before you click buy or sell.
- Never size from margin. “I can afford it” is not a risk plan.
- Avoid the first minutes after big US data. Spreads and slippage hurt small accounts most.
- Accept fewer trades. If 0.01 lots is too big for the stop you need, skip the trade.
- Track every trade. A trading journal shows whether your sizing actually matches your plan.
Go deeper
For stop placement, volatility-based sizing and daily loss limits, read the full XAUUSD risk management guide.
Educational content only, not financial advice. Contract sizes vary by broker, so check your broker’s specifications. Trading leveraged products carries a high risk of loss.
Frequently asked questions
What lot size should I use for gold with $100?
With $100, even the smallest common lot (0.01, or 1 oz) risks $1 for every $1 gold moves. A typical $5–10 stop then risks 5–10% of the account per trade, which is far above the 1% many traders aim for. Practising on demo or micro accounts until the balance is larger is often the safer path.
How much is 0.01 lot of gold worth per dollar move?
On most brokers, 1 standard lot of XAUUSD is 100 oz, so 0.01 lot is 1 oz. A $1 move in gold equals $1 profit or loss at 0.01 lots, $10 at 0.10 lots, and $100 at 1.00 lot.
How much margin do I need for 0.01 lot of gold?
Margin is gold price × ounces ÷ leverage. With gold near $4,150, 0.01 lot (1 oz) needs about $41.50 at 1:100 leverage or about $8.30 at 1:500. Margin is what you need to open the trade, not what you can lose.
Sources and further reading
- CME Group — Gold futures overview — Contract specifications and trading hours for COMEX gold
- CFTC — Commitments of Traders — Weekly futures positioning, including gold
- Investor.gov — Stop order — How stop orders work, and their limits in fast markets
External sites are independent of XAUUSD Global. Check dates and data yourself.