A platform may quote XAU/USD with Bid and Ask prices, but its contract terms determine what you trade. XAU identifies gold and USD its quotation currency; the metal is the first component of this symbol. A gold CFD, a futures contract and a physical product have different units, costs and ownership terms. Check those before calculating exposure.

Compare fine gold mass as well as gross weight

Two fictional products each weigh 100 g gross. A has a specified gold fraction of 999.9‰ and B 750‰. Equal scale readings do not establish equal fine-gold content.

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Gross mass and fine-gold contentTwo hypothetical products weigh 100 grams gross each. A at 999.9 parts per thousand contains 99.99 grams of gold and 0.01 grams of other material. B at 750 contains 75 grams of gold and 25 grams of other material. Equal total bars show gross weight; gold segments differ. A’s tiny remainder is identified numerically.100 g gross need not be 100 g goldA. Fineness 999.9‰99.99 g gold + 0.01 g other materialB. Fineness 750‰75 g gold + 25 g other materialFine mass = gross × fineness / 1000Difference: 99.99 − 75 = 24.99 g gold
Equal full-bar lengths show equal gross mass. Gold colour shows fine gold and grey shows other material. A’s 0.01 g remainder is too small to appear as a wide segment.

A contains 100 × 999.9 / 1000 = 99.99 g of fine gold; B contains 100 × 750 / 1000 = 75 g. The difference is 24.99 g. Put product masses on the same basis before comparing prices per gram: gross weight or fine gold. Assess purchase and repurchase terms separately.

Assumptions: Fictional products, weights and fineness; the specified mass fractions are assumed true. The diagram does not certify authenticity, hallmarks, Good Delivery status or tax treatment. It does not model price, premium or recovery costs. Official material: LBMA: fineness as a mass fraction.

What XAU/USD actually is

XAU/USD quotes gold in USD per fine troy ounce, approximately 31.1035 grams of pure gold. A hypothetical quote of 2,650 USD/oz is a unit price, not the price of a whole CFD lot or necessarily a small bar’s retail offer. The existing fineness diagram shows why gross product mass and fine-gold content must be kept separate.

For a distinct physical-purchase model, assume a product containing 1 fine oz, benchmark USD 2,500 and a 5% purchase premium: you pay USD 2,625. Assume the dealer always repurchases at 98% of the later benchmark, with no delivery, storage, tax or other charge. At an unchanged 2,500 benchmark, proceeds are USD 2,450 and the result−USD 175. A 5% benchmark rise to 2,625 gives repurchase USD 2,572.50, still a USD 52.50 loss. Break-even is 2,625/0.98 ≈ USD 2,678.5714/oz, a 7.142857% benchmark rise from 2,500—not simply 5%+2%. These are invented dealer terms; a changed discount or extra fee changes the threshold.

Ownership and settlement depend on the agreement. LBMA explains that allocated accounts identify specific bars; an unallocated balance is a contractual claim against the institution, not a particular bar. “Spot” therefore does not automatically mean your own specified bar. A gold CFD instead settles contractual price exposure without ownership or delivery of bullion, as XTB’s product description illustrates. Standard COMEX GC futures are physically deliverable, with a 100 oz contract and USD 10 tick, equivalent to USD 0.10/oz. Do not copy those rules to a broker’s CFD. The intermarket analysis guide addresses price relationships, a separate question from these rights and units.

Real yields, USD and demand: hypotheses to examine

Real yields, USD movements and demand for gold are useful variables to examine. Their importance changes across periods; three variables do not explain every move or make the remaining influences irrelevant.

Real yields. Expected real returns on alternative assets can affect the opportunity cost of holding gold. A nominal yield minus expected inflation is an approximation, while TIPS yields refer to inflation-linked instruments. Compare measures and dates: a rise in a chosen real-yield series does not guarantee that gold falls.

USD movements. Gold's USD price and a dollar index can be negatively correlated in some periods. This is not an arithmetic requirement: a stronger USD against other currencies does not force an ounce's USD price lower. Specify the index, period and return frequency.

Gold demand. Investment and official-sector activity may influence prices, but a haven label supplies no price floor. In its 19 March 2020 commentary, the World Gold Council described selling amid broad asset liquidation and suggested that gold may have been used to raise cash for other losses. That is a dated interpretation, not a guarantee about the next crisis. A leveraged position can also be closed before a later price recovery. Compare the Swiss franc over matched dates rather than assuming all havens move alike.

Why gold pays no interest — and why that matters

A physical gold holding does not itself pay a coupon or dividend, although separate lending arrangements may produce income with additional risks. Compare storage and other costs with alternative assets' expected returns. If an alternative hypothetically earns a real 2–3%, that is a comparison assumption, not a fixed annual cost charged by gold.

A negative expected real yield on an alternative asset does not guarantee that gold preserves purchasing power. Gold can fall in nominal or real terms, and a quoted yield does not by itself determine a realised holding-period return. Follow central-bank decisions and Fed news as context rather than a one-variable price guarantee.

Contract units and measured price ranges

Measure price ranges over stated dates and compare percentage returns using consistent intervals. An undated 20–30 or 50 USD daily move cannot establish current volatility or a permanent ranking against currency pairs. Include spread and execution around the events relevant to the strategy.

For the hypothetical sizing example below, assume 100 troy ounces per lot, a 0.01 USD-per-ounce price increment and a 0.01-lot size increment. Those assumptions make a 1 USD-per-ounce move worth 100 USD per lot and a 0.01 move worth 1 USD per lot. Actual specifications differ, so check the lot, tick value and minimum volume for your instrument.

Gold versus a typical major — the basic differences
Assumed lot unit100 troy ounces; check your actual contract
A 1 USD move per ounce100 USD on the whole lot
Assumed price increment 0.01 USD/oz1 USD per assumed 100-ounce lot; actual tick may differ
Daily rangeMeasure a stated period in price and percentage units
Spread and commissionUse the provider's actual quote and fee schedule
Stop distanceChoose and test it for the strategy; ordinary stops do not guarantee price

How to size a position — a concrete example

Hypothetically, a 5,000 EUR account uses a chosen 1% planned-risk budget, or 50 EUR. Assume gold at 2,650 USD per ounce and a 40 USD stop distance. The chosen percentage and stop are model inputs, not a standard safety rule or a guarantee against ordinary price movement.

At an assumed 1.08 USD/EUR, EUR 50 is USD 54. This price-only sizing calculation excludes fees and funding:54/40=1.35 oz. With the fictional 100 oz lot and 0.01 lot step, rounding down gives 1 oz. An 80 USD/oz favourable move gives USD 80 before costs versus a USD 40 planned adverse move, a 2:1 price ratio. Ordinary-stop execution can be worse. A 100 oz position with that distance has USD 4,000 planned price risk, about 74.1% of the account’s USD 5,400 equivalent. Where an applicable retail gold-CFD regime limits opening leverage to 20:1, that controls initial margin rather than the price P&L of the same ounces; it is not a global rule.

A separate model includes costs. Assume a USD-settled linear CFD with 100 oz per lot,0.01 lot steps and USD 0.01/oz tick; buy 0.02 lot=2 oz at Ask 2,500.50 while Bid is 2,500.00. Assume total opening-and-closing commission USD 0.50/oz and funding USD 0.30/oz for the whole holding period, no other fees, and full stated exit fills. The costs are USD 1+USD 0.60=USD 1.60 for 2 oz, not each side charged twice.

Separate hypothetical 2 oz long; alternative full exits
Immediate Bid 2,500.00Price −USD 1 before other costs; this is a quote mark, not a funded close.
Exit Bid 2,512.50Price+USD 24; net+USD 22.40; EUR 20 at an assumed 1.12 USD/EUR.
Stop filled at 2,480.50Price−USD 40; net−USD 41.60.
Worse stop fill at 2,478.50Price−USD 44; net−USD 45.60.

Entry notional is 2×2,500.50=USD 5,001; it is neither margin nor a loss limit. Ask/Bid fills already include spread; do not subtract it again. The single final EUR conversion has no additional charge here; actual bookings may use different times/rates. A separate USD 50 planned-loss budget with USD 20/oz distance and USD 0.80/oz costs allows 50/20.80≈2.404 oz. At a one-ounce step,2 oz plans USD 41.60 while 3 oz plans USD 62.40. Rounding controls the planned scenario, not a larger gap or forced-close path.

Your next step with gold

Before trading gold, distinguish physical content from contractual exposure and calculate the result in the account currency. The following checks make the assumptions explicit; they do not guarantee a profitable trade.

  1. Compare dated series. Align gold and a defined real-yield measure over the same interval and examine multiple periods. A week of opposite moves does not establish a stable relationship or the strongest driver.
  2. Calculate size in contract units. Choose a money-risk budget and stop distance, convert currencies, include costs and apply the instrument's volume step. A 40–50 USD stop and micro-lot result are model choices, not universal rules for European accounts.
  3. Record event and execution context. Compare scheduled US releases with prior expectations and note actual gold prices, spread and financing. The USD/JPY carry example has different exposure and funding terms; panic does not guarantee opposite returns.