【Pricing Fundamentals】Premium and Discount in Physical Commodity Pricing
Quote from chief_editor on May 24, 2026, 3:30 pmPremium and discount in physical commodity pricing explained. Learn what determines the spread over benchmark and how it affects real trade economics.
A premium in physical commodity trading is an amount added to a benchmark price to arrive at the final transaction price. A discount is an amount subtracted from that benchmark. In a standard physical supply contract, the final price is expressed as: Benchmark Price plus Premium (or minus Discount). The premium or discount reflects all the factors that make a specific physical cargo more or less valuable than the abstract reference price.
The difference between the premium and the benchmark is that the benchmark represents a standardized product at a standardized location and time, while the premium bridges the gap between that abstraction and the reality of a specific cargo.
What Determines the Premium or Discount
Four primary factors determine whether a physical commodity trades at a premium or discount to benchmark, and by how much.
First, quality or grade specification. A metal that exceeds London Metal Exchange (LME) purity standards will trade at a premium to the LME price. Aluminum with lower iron or silicon content than the LME standard — called high-purity or special-high-grade aluminum — commands a premium. A crude oil with lower sulfur content (sweet crude) typically trades at a premium to a sour crude benchmark.
Second, location and logistics. A commodity delivered to a buyer's plant gates is worth more than the same commodity sitting in a warehouse at a distant port. A premium for delivery duty paid (DDP) to a buyer's facility in Germany will be higher than a premium for an ex-warehouse Rotterdam transaction because the seller absorbs more logistics cost.
Third, timing and availability. When nearby supplies of a commodity are tight, sellers can demand a higher premium because buyers cannot easily find alternatives. During periods of market surplus, sellers must offer discounts to move inventory. For example, assume the LME cash price for copper cathode is $9,000 per metric ton and spot supplies in East Asia are tight. Cathode available for immediate delivery in Shanghai might trade at LME plus assume $110 per metric ton, while cathode available three months forward trades at LME plus assume $60, reflecting the expectation that supply will normalize.
Fourth, brand or origin. In some commodity markets, specific origins or producer brands trade at recognized premiums. Russian Rusal aluminum traded at a discount during periods of sanctions-related restrictions, while certain Japanese and European aluminum producers' brands command premiums in specific markets due to quality consistency guarantees.
How Premiums Move in Practice
Premiums are not fixed — they are negotiated between buyers and sellers and change with market conditions. Industry surveys and price reporting agencies publish physical premium assessments. S&P Global Commodity Insights (formerly Platts) and Argus Media publish daily or weekly assessments of regional physical premiums for metals, crude oil, and refined products.
In the aluminum market, the Platts Midwest Premium is a widely tracked benchmark for US domestic aluminum supply. In early 2022, the Midwest Premium rose sharply following supply disruptions, reaching levels above $0.30 per pound — significantly above its historical average — before declining as supply normalized. Buyers with long-term contracts that fixed the premium in advance were protected from this spike; buyers purchasing on spot premium terms absorbed the full increase.
A trader's ability to understand and anticipate premium movements is often where physical trading margins are generated. A trading company that can source metal at a low-premium origin and deliver it into a high-premium region captures the differential as a trading margin, net of logistics costs.
The premium or discount is the mechanism that connects the abstract benchmark price to the commercial reality of a specific physical cargo — it reflects quality, location, timing, and availability in a single number that both buyer and seller can negotiate and verify.
Premium and discount in physical commodity pricing explained. Learn what determines the spread over benchmark and how it affects real trade economics.
A premium in physical commodity trading is an amount added to a benchmark price to arrive at the final transaction price. A discount is an amount subtracted from that benchmark. In a standard physical supply contract, the final price is expressed as: Benchmark Price plus Premium (or minus Discount). The premium or discount reflects all the factors that make a specific physical cargo more or less valuable than the abstract reference price.
The difference between the premium and the benchmark is that the benchmark represents a standardized product at a standardized location and time, while the premium bridges the gap between that abstraction and the reality of a specific cargo.
What Determines the Premium or Discount
Four primary factors determine whether a physical commodity trades at a premium or discount to benchmark, and by how much.
First, quality or grade specification. A metal that exceeds London Metal Exchange (LME) purity standards will trade at a premium to the LME price. Aluminum with lower iron or silicon content than the LME standard — called high-purity or special-high-grade aluminum — commands a premium. A crude oil with lower sulfur content (sweet crude) typically trades at a premium to a sour crude benchmark.
Second, location and logistics. A commodity delivered to a buyer's plant gates is worth more than the same commodity sitting in a warehouse at a distant port. A premium for delivery duty paid (DDP) to a buyer's facility in Germany will be higher than a premium for an ex-warehouse Rotterdam transaction because the seller absorbs more logistics cost.
Third, timing and availability. When nearby supplies of a commodity are tight, sellers can demand a higher premium because buyers cannot easily find alternatives. During periods of market surplus, sellers must offer discounts to move inventory. For example, assume the LME cash price for copper cathode is $9,000 per metric ton and spot supplies in East Asia are tight. Cathode available for immediate delivery in Shanghai might trade at LME plus assume $110 per metric ton, while cathode available three months forward trades at LME plus assume $60, reflecting the expectation that supply will normalize.
Fourth, brand or origin. In some commodity markets, specific origins or producer brands trade at recognized premiums. Russian Rusal aluminum traded at a discount during periods of sanctions-related restrictions, while certain Japanese and European aluminum producers' brands command premiums in specific markets due to quality consistency guarantees.
How Premiums Move in Practice
Premiums are not fixed — they are negotiated between buyers and sellers and change with market conditions. Industry surveys and price reporting agencies publish physical premium assessments. S&P Global Commodity Insights (formerly Platts) and Argus Media publish daily or weekly assessments of regional physical premiums for metals, crude oil, and refined products.
In the aluminum market, the Platts Midwest Premium is a widely tracked benchmark for US domestic aluminum supply. In early 2022, the Midwest Premium rose sharply following supply disruptions, reaching levels above $0.30 per pound — significantly above its historical average — before declining as supply normalized. Buyers with long-term contracts that fixed the premium in advance were protected from this spike; buyers purchasing on spot premium terms absorbed the full increase.
A trader's ability to understand and anticipate premium movements is often where physical trading margins are generated. A trading company that can source metal at a low-premium origin and deliver it into a high-premium region captures the differential as a trading margin, net of logistics costs.
The premium or discount is the mechanism that connects the abstract benchmark price to the commercial reality of a specific physical cargo — it reflects quality, location, timing, and availability in a single number that both buyer and seller can negotiate and verify.