Simple explanation
Why interest rates matter to gold
Gold does not pay interest. A Treasury bond, savings account or money-market fund does. When interest rates are high, investors can earn a return without owning gold. That can make gold less attractive.
But the important bit is not just the quoted interest rate. It is the return after inflation. If inflation is eating away most of the interest, gold can still look attractive as a store of value.
Real interest rate ≈ interest rate − inflation rate
Professional markets usually focus on the 10-year real yield from inflation-protected Treasury bonds. AgAu shows both the simple idea and the market version.