How Is Crude Oil Priced? Formula Pricing and OSPs in Physical Contracts

How is crude oil priced in physical contracts?

Ask how crude oil is priced in physical trade and the answer is usually a formula, not a fixed dollar price. Contracts use formula pricing, which an Oxford Institute for Energy Studies (OIES) paper calls "the basis of the oil pricing system" ^[1]. The price of a cargo (Px) equals a benchmark price (PR) plus or minus a differential (D) that reflects the cargo's quality, location and timing ^[1].

A crude oil pricing formula therefore has five parts to agree: the benchmark, the pricing period, the differential, any quality adjustments and the delivery terms that decide who pays for freight and insurance.

The benchmark depends on where the oil is going. Saudi Aramco, for example, prices sales to Asia against the average of Platts Oman and Dubai, sales to Europe against the ICE Brent Weighted Average (Bwave), and sales to the US against the Argus Sour Crude Index (ASCI), which is based on US Gulf Coast sour grades ^[2,5].

What is the pricing period, and where does the bill of lading fit in?

Formula prices are rarely fixed on one day's quotation; the benchmark is averaged over a pricing period. OIES notes that pricing is often agreed around the delivery date, with examples ranging from an average over 10 days around delivery to a full trade-month average ^[1].

A window can also be tied to the bill of lading (B/L) date, the date on the document the carrier issues when the cargo is loaded. For example, a contract might use the average of the five quotations after the B/L date, or of a set number of days either side of it.

Some prices use monthly averages. In 2021 the Abu Dhabi National Oil Company (ADNOC) began setting its Murban official selling price from the monthly average of ICE Futures Abu Dhabi (IFAD) Murban futures, and pricing grades such as Das, Upper Zakum and Umm Lulu as differentials to Murban ^[3]. OIES reported that Saudi Arabia priced US sales on the trade-month average of ASCI ^[1]. Averaging smooths daily volatility, but the final price is unknown until the window closes, which is the risk hedging addresses.

What is an official selling price (OSP)?

National oil companies selling under term contracts publish official selling prices: monthly differentials to a benchmark. The US Energy Information Administration (EIA) explains that Saudi Aramco sells to long-term customers at an OSP set as a differential to a benchmark "based on destination and crude quality", adjusted monthly ^[2]. Aramco typically announces its prices around the fifth of each month for the following month's loadings, after the monthly OPEC+ meetings ^[4].

Each grade carries its own differential. For November 2026 loadings to Asia, Aramco priced Arab Super Light at $3.35/bbl below Oman/Dubai, Arab Light at $5.00 below and Arab Heavy at $7.35 below ^[5]. The ladder between the grades reflects quality.

OSPs moved sharply in 2026. For May loadings, Aramco set Arab Light to Asia at a $19.50/bbl premium to Oman/Dubai, the highest ever in Saudi pricing ^[4]. It cut June to $15.50, while Arab Light to northwest Europe was set at $25.85 above ICE Brent ^[6]. By November the Asian price had swung to a $5.00 discount, the widest since June 2020. Refining sources told Reuters the cut appeared aimed at compensating buyers for high freight costs ^[5].

Oman adopted the Gulf Mercantile Exchange (GME) Oman futures price as the basis for pricing its exports to Asia ^[7]. OIES documented the same destination-based approach for Kuwait, Iran and Iraq. In 2011 Iraq's Basrah crude, marketed by the State Organisation for Marketing of Oil (SOMO), was priced against Oman/Dubai for Asia, Dated Brent for Europe and ASCI for the US ^[1].

How do quality, freight and insurance affect the price?

Quality. Benchmarks carry quality adjustments too. In Dated Brent, Oseberg, Ekofisk and Troll are adjusted with quality premiums ^[8]. In Platts Dubai, Murban's quality adjustment became two-way in January 2026: the buyer pays the seller when Murban trades above Oman, and the seller pays the buyer when it trades below ^[9]. In March Platts suspended the negative side to maximise deliverable crude ^[10]. Physical contracts add their own specifications and price adjustments.

Delivery terms. The Incoterms® rule decides who pays for shipping and insurance. A free on board (FOB) price applies at the loading terminal ^[1]. Under cost, insurance and freight (CIF), the seller's price includes both; the International Chamber of Commerce (ICC) notes that CIF is often used in commodity trading and that Institute Cargo Clauses (C) remain its default insurance cover ^[11]. Platts, for example, converts CIF Rotterdam offers of WTI Midland to FOB values by netting back freight ^[8]. Saudi sales to Asia are priced FOB ^[1], so high freight costs fall on the buyer ^[5].

Freight and insurance in 2026. Goldman Sachs estimated that the global average crude freight rate rose above $20/bbl, from $3/bbl a year earlier, with a Hormuz war-risk premium accounting for about $7 of the increase ^[12]. In July, Marsh said war-risk insurance could cost 3% to 10% of a ship's hull value, against about 0.25% before the war according to The National ^[13]. A very large crude carrier (VLCC) chartered from the Gulf to China cost $1.2 million a day in early October, against about $80,000 a year earlier, according to LSEG data cited by Reuters ^[5].

How do buyers and sellers hedge physical crude prices?

A floating price creates exposure, for example between a purchase and a resale priced on different windows. ICE Brent futures cover 1,000 barrels and settle through an exchange of futures for physical (EFP) or in cash against the ICE Brent Index ^[15]. NYMEX WTI futures are 1,000 barrels delivered at Cushing, Oklahoma ^[16]. IFAD Murban futures are delivered FOB Fujairah ^[17], and GME lists Oman futures ^[7].

Futures do not remove all risk, because Brent futures track the forward market rather than prompt Dated Brent cargoes. The Brent complex also includes contracts for difference (CFDs) and dated-to-frontline swaps (DFLs) ^[18], and such derivatives are used to hedge differences between ICE futures, forward cargoes and Dated Brent ^[19]. OIES notes that trading differentials limits exposure to time, location, grade and volume risk ^[1]. In mid-October 2026 North Sea Dated was around $134/bbl while Brent futures were near $107/bbl ^[14]; a Dated-priced cargo hedged only with futures would have carried that gap.

Worked example: pricing a cargo (hypothetical)

This example is hypothetical: the grade, prices and costs are invented for illustration and are not market data.

The contract. A trader buys 700,000 barrels of a fictional light sweet "Grade X", FOB, at the average of Dated Brent on the five quotation days after the B/L date, plus $1.20/bbl.

The pricing period. The cargo loads on day 0. Over the next five quotation days Dated Brent is $82.40, $83.10, $82.70, $81.90 and $82.40, an average of $82.50/bbl.

The invoice. $82.50 + $1.20 = $83.70/bbl, or $58.59 million. The cargo meets specification; had sulphur exceeded the limit, a contractual discount of, say, $0.10/bbl would have cut the price to $83.60/bbl.

The delivered cost. Adding freight of $3.00/bbl and insurance of $0.10/bbl gives the buyer a delivered cost of $86.80/bbl. At 2026's average freight rates the freight element alone could be several times higher ^[12].

The hedge. The trader has resold the cargo on a later Dated Brent window. To protect the margin, the trader sells 700 ICE Brent futures contracts (700 × 1,000 barrels) ^[15] as the purchase prices and buys them back as the sale prices. If prices fall by $5/bbl in between, the cargo loses about $3.5 million and the futures gain about the same. A change in the gap between Dated Brent and futures is not covered; traders use Brent derivatives such as CFDs for that ^[19].

Checklist: what to agree before signing

• Benchmark: which benchmark, and which exchange or price reporting agency publishes it.
• Pricing period: how many quotations, anchored to which date (B/L, delivery or month).
• Differential: a fixed premium or discount, or the seller's OSP.
• Quality: specifications, testing and price adjustments.
• Delivery terms: the Incoterms® 2020 rule, such as FOB or CIF, and the level of insurance cover.
• Hedging: which instrument, matched to the pricing window.
• Fallbacks: what happens if a benchmark changes or grades become undeliverable, as in Platts Dubai in March 2026 ^[10].

Alupetra advises on crude oil sales and pricing terms from its offices in Istanbul, London and Dubai.