A nominal yield of 5% when inflation is 6% is a loss of purchasing power. The real yield — nominal minus expected inflation — is what actually determines whether holding an interest-bearing asset makes you better off, and therefore what a non-yielding asset has to compete with.
real yield ≈ nominal yield − expected inflation
Markets observe this directly through inflation-protected bonds. The 10Y real yield is the single most important input to gold, because gold produces no income and must therefore compete against the real return available elsewhere.
The dollar is the second leg. Most globally traded commodities, including gold, are priced in dollars, so a stronger dollar mechanically makes them more expensive in every other currency, reducing demand at the margin. That is arithmetic before it is behaviour.
The dollar’s effect on global conditions runs deeper than pricing. A large volume of debt outside the United States is denominated in dollars. When the dollar strengthens, servicing that debt costs more in local currency terms, and financial conditions tighten for borrowers who never took a view on the dollar at all. This is the transmission channel that makes DXY a global variable rather than an American one.
| Real yields | US dollar | Typical pressure on gold |
|---|---|---|
| Falling | Weakening | Supportive on both legs |
| Falling | Strengthening | Mixed — the legs conflict |
| Rising | Weakening | Mixed — the legs conflict |
| Rising | Strengthening | Headwind on both legs |
Common belief
"Gold is an inflation hedge, so it rises when inflation rises."
What is actually true
Gold has protected purchasing power over very long horizons, but over years it has often fallen during inflationary periods — because central banks respond to inflation by raising rates, which lifts real yields, which is a headwind. What gold responds to is the real yield, not the inflation rate on its own.
Inflation runs at 6% in two different periods. In the first, policy stays loose and nominal yields sit at 2%, so the real yield is −4% and gold is well supported. In the second, policy tightens aggressively and nominal yields reach 8%, so the real yield is +2% and gold struggles. The inflation number is identical; the real yield decides the outcome.