Bullion premium calculator
Compare a dealer price against the contained-metal reference, including delivery and fees.
Quick answer: Premium % = (what you pay ÷ value of the metal inside − 1) × 100. A one-ounce coin costing $105 when its metal is worth $100 carries a 5% premium.
Explore the numbers.
Calculate to update this worksheet from your inputs.
Scenario chart
Scenarios change one input while holding the others constant. They are calculations, not observed market prices or forecasts.
Detailed calculation table
The table contains the same inputs used for your result. Values are rounded for display; CSV preserves more precision.
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Understand the complete acquisition cost
How to use this calculator
- Enter fine weight per item and a reference price per the same weight unit.
- Enter the dealer price per item, item count and total additional costs for the order.
- Optionally model an effective purchase tax and a resale discount to find the reference price needed to break even.
One fine unit at a 3,000 reference, a 3,150 dealer price and 20 in additional costs gives a total of 3,170 and an all-in premium of 5.67%.
Separate the benchmark from the invoice
The contained-metal reference equals fine weight times the reference price. The dealer invoice can also reflect manufacturing, distribution and inventory costs. The premium compares your complete acquisition cost against the contained reference value, so shipping and entered tax are included.
Keep the tax assumption visible
The optional tax percentage in this worksheet applies to dealer merchandise cost only, excluding the additional-cost field. This is an explicit arithmetic assumption, not a determination of local tax treatment. If you have an actual invoice, enter a zero percentage and put all invoiced extras in additional costs.
A premium is not an expected return
The sensitivity chart holds your paid total constant while varying the metal reference. A falling calculated premium in a higher-price scenario does not mean the dealer has changed their offer. Break-even additionally applies your chosen resale discount and ignores any resale costs you have not supplied.
Questions about this calculation
Which weight should I enter?
Use fine-metal weight, not gross alloy weight. The reference must use the same weight unit and currency.
Can the premium be negative?
Yes. A negative result means the total entered cost is below the reference value. Check the units, timestamps and item specification before drawing a conclusion.
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