【Pricing Fundamentals】How Premium and Discount Work in Physical Trade
Quote from chief_editor on April 13, 2026, 10:57 pmPremium and discount physical commodity trading explained: learn what drives differentials above or below benchmark and how they appear in pricing formulas.
In physical commodity trading, a premium refers to an amount added to a benchmark price to arrive at the transaction price for a specific cargo. A discount refers to an amount subtracted from the benchmark. Together, premiums and discounts — also called differentials — are the mechanism by which a global reference price is adjusted to reflect the specific characteristics of a real physical transaction: the grade of the material, its location, the delivery timing, and local market conditions.
Understanding what drives premiums and discounts is essential for anyone pricing physical commodity contracts, because the benchmark price alone tells only part of the story.
What Determines Whether a Cargo Trades at a Premium or Discount
Four main factors drive premiums and discounts in physical commodity markets.
First, quality and specification. A commodity that exceeds the standard specifications of the benchmark typically commands a premium. For example, aluminum with a purity of 99.9% may trade at a premium over the London Metal Exchange (LME) benchmark for standard 99.7% aluminum. Conversely, off-spec material — copper blister rather than refined cathode, or wheat with elevated moisture content — trades at a discount.
Second, location. The benchmark price is set at a reference location, such as an LME warehouse or a CBOT delivery point. A commodity located elsewhere incurs freight and logistics costs to reach that reference point, and those costs are reflected in the price differential. Copper cathode in a bonded warehouse in Shanghai trades at a premium to LME if Chinese domestic demand is strong and imports are needed; it may trade at a discount if local supply is abundant.
Third, timing and forward curve structure. In a market in backwardation — where nearby prices are higher than forward prices — a cargo available for prompt delivery commands a premium over a deferred cargo. In a market in contango — where forward prices are higher than spot — holding inventory has a carrying cost, and prompt cargoes may trade at a discount.
Fourth, local supply and demand balance. When end-users in a particular region are short of material, competition among buyers pushes premiums up. When supply is plentiful and buyers are not urgently seeking cargo, premiums fall or turn to discounts.
How Premiums and Discounts Appear in Pricing Formulas
Physical commodity contracts are typically priced using a formula: Transaction Price = Benchmark + Premium (or − Discount). In a typical metals contract, this might be expressed as LME three-month copper plus USD 80 per metric ton CIF Rotterdam. The LME three-month price is the floating benchmark, determined by averaging LME closing prices over a specified pricing period, and USD 80 per metric ton is the fixed premium agreed at the time of contract signing.
For example, assume a Japanese aluminum smelter agrees to sell 1,000 metric tons of primary aluminum ingot to a Korean manufacturer. The contract specifies: LME cash settlement price for the quotational period of the month of shipment, plus a premium of USD 120 per metric ton CFR (Cost and Freight) Busan. If the LME cash average for that month is USD 2,400 per metric ton, the final transaction price is USD 2,520 per metric ton, for a total contract value of USD 2.52 million.
The premium in this example reflects the cost of freight from Japan to South Korea, the quality of the ingot, packaging into bundles, and current market demand in the Korean market. All of these factors are compressed into a single number that sits above the benchmark.
Premiums and discounts are the bridge between the global benchmark and the actual transaction price — they encode quality, location, timing, and local market conditions into a single number that makes a standardized benchmark applicable to a specific physical cargo.
Keywords: premium discount physical commodity trading explained | commodity price differential, physical cargo premium, benchmark plus differential, quality location premium, commodity pricing formula
Words: 627 | Source: Industry knowledge — WorldTradePro editorial research | Created: 2026-04-09
Premium and discount physical commodity trading explained: learn what drives differentials above or below benchmark and how they appear in pricing formulas.
In physical commodity trading, a premium refers to an amount added to a benchmark price to arrive at the transaction price for a specific cargo. A discount refers to an amount subtracted from the benchmark. Together, premiums and discounts — also called differentials — are the mechanism by which a global reference price is adjusted to reflect the specific characteristics of a real physical transaction: the grade of the material, its location, the delivery timing, and local market conditions.
Understanding what drives premiums and discounts is essential for anyone pricing physical commodity contracts, because the benchmark price alone tells only part of the story.
What Determines Whether a Cargo Trades at a Premium or Discount
Four main factors drive premiums and discounts in physical commodity markets.
First, quality and specification. A commodity that exceeds the standard specifications of the benchmark typically commands a premium. For example, aluminum with a purity of 99.9% may trade at a premium over the London Metal Exchange (LME) benchmark for standard 99.7% aluminum. Conversely, off-spec material — copper blister rather than refined cathode, or wheat with elevated moisture content — trades at a discount.
Second, location. The benchmark price is set at a reference location, such as an LME warehouse or a CBOT delivery point. A commodity located elsewhere incurs freight and logistics costs to reach that reference point, and those costs are reflected in the price differential. Copper cathode in a bonded warehouse in Shanghai trades at a premium to LME if Chinese domestic demand is strong and imports are needed; it may trade at a discount if local supply is abundant.
Third, timing and forward curve structure. In a market in backwardation — where nearby prices are higher than forward prices — a cargo available for prompt delivery commands a premium over a deferred cargo. In a market in contango — where forward prices are higher than spot — holding inventory has a carrying cost, and prompt cargoes may trade at a discount.
Fourth, local supply and demand balance. When end-users in a particular region are short of material, competition among buyers pushes premiums up. When supply is plentiful and buyers are not urgently seeking cargo, premiums fall or turn to discounts.
How Premiums and Discounts Appear in Pricing Formulas
Physical commodity contracts are typically priced using a formula: Transaction Price = Benchmark + Premium (or − Discount). In a typical metals contract, this might be expressed as LME three-month copper plus USD 80 per metric ton CIF Rotterdam. The LME three-month price is the floating benchmark, determined by averaging LME closing prices over a specified pricing period, and USD 80 per metric ton is the fixed premium agreed at the time of contract signing.
For example, assume a Japanese aluminum smelter agrees to sell 1,000 metric tons of primary aluminum ingot to a Korean manufacturer. The contract specifies: LME cash settlement price for the quotational period of the month of shipment, plus a premium of USD 120 per metric ton CFR (Cost and Freight) Busan. If the LME cash average for that month is USD 2,400 per metric ton, the final transaction price is USD 2,520 per metric ton, for a total contract value of USD 2.52 million.
The premium in this example reflects the cost of freight from Japan to South Korea, the quality of the ingot, packaging into bundles, and current market demand in the Korean market. All of these factors are compressed into a single number that sits above the benchmark.
Premiums and discounts are the bridge between the global benchmark and the actual transaction price — they encode quality, location, timing, and local market conditions into a single number that makes a standardized benchmark applicable to a specific physical cargo.
Keywords: premium discount physical commodity trading explained | commodity price differential, physical cargo premium, benchmark plus differential, quality location premium, commodity pricing formula
Words: 627 | Source: Industry knowledge — WorldTradePro editorial research | Created: 2026-04-09