How gold coin premiums work
Why a one-ounce coin never costs exactly one ounce of gold, what drives the difference, and how to tell a fair premium from an expensive one.
7 min read · Updated
The premium is the part you can actually control
The gold price is the same for everyone. What differs between dealers, and between products, is the premium — the amount you pay above the metal value of the coin in your hand.
That makes the premium the only part of the transaction you have any influence over. You cannot buy gold below the market price, but you can very easily pay two or three percentage points more than you needed to, and on a £2,500 purchase that is £50–75 gone before you have taken delivery.
The formula
What the premium actually pays for
A premium is not a dealer being greedy. Several real costs sit between a bar of refined gold and a coin arriving at your door.
- Minting. Striking a coin costs roughly the same whether it contains a tenth of an ounce or a full ounce, which is why small coins carry proportionally higher premiums.
- Distribution. The mint sells to wholesalers, who sell to dealers, and each step takes a margin.
- Dealer costs. Premises, insurance, secure storage, staff, card processing and the working capital tied up in stock.
- Risk. A dealer holding stock is exposed to the gold price moving against them between buying and selling.
- Scarcity. When demand spikes, premiums rise sharply even though the gold price has not moved — this is often the largest short-term factor.
Why smaller coins always look expensive
The fixed cost of producing a coin is spread across whatever gold is in it. That produces a consistent and predictable pattern.
| Product | Fine gold | Typical premium |
|---|---|---|
| 1 oz bar | 1 oz | Lowest |
| 1 oz coin | 1 oz | Low |
| Half Sovereign | 0.1177 oz | Higher |
| 1/10 oz coin | 0.1 oz | Highest |
Comparing premiums fairly
Two rules make premium comparison meaningful rather than misleading.
First, compare the delivered premium, not the advertised one. A coin at a 3% premium with £15 delivery is not cheaper than the same coin at a 4% premium with free delivery — on a single coin, the delivery charge usually dominates.
Second, compare like with like. A mixed-year Sovereign and a current-year Sovereign contain identical gold, but the current-year coin carries a premium for the date. If you are buying for gold content, that premium buys you nothing.
A low premium is not automatically a good deal
What a premium does not tell you
A low premium tells you that you are buying gold efficiently today. It says nothing whatsoever about what gold will be worth tomorrow, next month or next year.
It is also only half of the round trip. What matters over a full purchase-and-sale cycle is the spread: the premium you pay when buying plus the discount you accept when selling. A product with a slightly higher buying premium but a stronger resale market can leave you better off than one that looked cheaper on the way in.