Commodity Futures Explained: Contracts, Margin, Expiry and Settlement

A commodity futures contract is a standardised agreement to buy or sell an underlying commodity exposure for a defined future delivery month or settlement period. The exchange specifies the contract unit, product grade, permitted delivery location or reference index, minimum price fluctuation, trading hours, last trading day and settlement rules. The market determines the traded price through supply, demand and risk transfer.

Futures can help producers and consumers manage price exposure, but they also permit leveraged speculation. A relatively small margin deposit controls a much larger notional value, and contracts can produce substantial daily gains and losses. Understanding the actual legal obligations matters more than memorising a ticker or observing a chart.

What is a futures contract?

A futures contract defines the rules of a standardised market commitment. The buyer holds a long position and generally benefits if the futures price increases, while the seller holds a short position and generally benefits if the futures price declines, subject to transaction costs, margins and settlement conditions. A holder who closes an offsetting position before relevant expiry normally realises trading profit or loss without completing a physical commodity delivery.

However, some commodity futures are physically deliverable, and holders who remain in an eligible contract may face notice, delivery or other procedures. Others are cash settled against a reference price or index. The label “futures” does not itself tell a trader which applies. Brokers may impose deadlines and liquidation policies earlier than an exchange’s final trading deadline.

Contract specifications: what to check first

Each contract specification functions as an operational rulebook. The most important elements are the underlying commodity or index, the unit size, quotation currency, tick size, tick value, listed months, final trading day, first notice or relevant delivery dates, daily price limits if applicable, clearing method and delivery or cash settlement rules.

For example, CME’s standard WTI crude oil future is often discussed as a 1,000-barrel contract, while its Micro WTI contract represents 100 barrels. The actual tick value and obligations follow the specific contract being traded. A trader must verify current official specifications; product structures and margin levels can change.

Always consult the exact exchange and broker contract terms rather than relying on generic descriptions.

Notional value and the mechanics of profit or loss

For a simple linear futures contract, notional value = contract price × contract unit × number of contracts. Suppose a hypothetical metal future covers 500 units and trades at £40 per unit. One contract has £20,000 notional exposure. Three contracts create £60,000 of exposure before any netting or other adjustments.

If the price increases to £41, a long position in three such contracts gains (41 − 40) × 500 × 3 = £1,500 before fees. A short position loses the same amount before costs. At £38, the hypothetical long loses (38 − 40) × 500 × 3 = £3,000. The relationship is linear for this simple example, but contract units and quotation conventions must be applied correctly.

Tick value is equally important. If the minimum price increment is £0.05 per unit, one tick on a 500-unit contract is £25, and a 10-tick move is £250. A price chart showing a small percentage move can still translate into a large cash variation when the notional exposure is high.

Margin: collateral rather than purchase price

Initial margin is collateral required under a margin framework; it is not the cost of buying a commodity outright and is not an insurance premium limiting losses. Maintenance margin and variation margin rules determine when additional resources are needed. Exchange clearinghouses and brokers apply requirements, and brokers may require more collateral than the clearinghouse minimum.

Suppose a fictional contract has £20,000 notional exposure and an illustrative £2,000 initial margin requirement. Its simple notional-to-margin ratio is 10:1. A 10% adverse change in the futures price implies a £2,000 loss before expenses, potentially exhausting the initial collateral amount. A bigger move can cause greater loss, and liquidation may occur before the trader intended to exit.

Margin requirements can increase during volatile markets. A position that was adequately collateralised yesterday may require additional money even when the trade’s size has not changed. Traders should evaluate available liquidity to meet margin calls and the possibility of sudden price gaps, not merely the published initial-margin figure.

Daily mark-to-market and variation margin

Many cleared futures are revalued against an official daily settlement price. Changes are reflected in margin account balances through the clearing process. This differs from waiting until the contract expires to determine the total cash effect of price movements. A trader can experience substantial cash-flow needs before the underlying physical exposure has generated a corresponding receipt.

CME Group explains the daily settlement and transfer process in its mark-to-market lesson. For a hypothetical long contract covering 500 units, a daily settlement change from £40 to £39.20 means a £400 loss for that contract before costs. If the next settlement rises to £40.50, the following day’s variation would be a £650 gain from £39.20 to £40.50. Both changes affect the account under applicable clearing rules.

This accounting matters for a commercial hedger. A grain producer holding a short futures position could face a margin call when grain prices rise even though the eventual cash selling price of the crop may also be higher. The hedge can reduce economic price risk while creating near-term cash-flow requirements.

Expiry, first notice and settlement

Commodity contracts have listed delivery or settlement months, but their deadlines differ. Some physically delivered futures have a first notice day, after which holders may become subject to delivery notices under exchange rules. A last trading day may be different from the final settlement event. A cash-settled contract typically relies on a published settlement reference and can have rules for exceptional conditions or disrupted indices.

Traders must know the exact contract and broker. The broker may require eligible positions to be closed or rolled well before an exchange delivery event, and may impose penalties or other procedures if instructions are ignored. An automated calendar reminder is useful operationally, but should not replace reading current notices.

Contract expiry also affects liquidity. Trading volume frequently migrates from a nearby month to a later delivery month, though the timing is not universal. A trader who remains in an illiquid expiring contract can face wider spreads and greater transaction costs than in the new active month.

What is a futures contract roll?

A roll closes exposure in one delivery month and opens exposure in another. It maintains a general market position while changing the exact contractual maturity. If the current month trades at £80 and the next at £82, selling the current contract and buying the later contract involves an observed £2 price difference. That difference is not an immediate £2 cash loss in addition to ordinary P&L; the resulting return depends on the prices of the actual contracts over time.

Rolling can affect investment performance because the two maturities respond differently to inventories, storage costs and expectations. The relationship between months is called the futures curve or term structure. See Contango and Backwardation Explained for the distinction between roll transactions, convergence and long-run return attribution.

Futures versus forwards, options and swaps

Forwards are commonly bilateral contracts tailored to delivery quantity and timing, although clearing and collateral arrangements can vary. Futures are standardised and exchange traded. Commodity swaps can exchange a fixed price for a floating reference over a specified period. Options provide a right defined by contract terms, usually in exchange for a premium, while the option seller accepts a contingent obligation. The exact outcome depends on the instrument and its exercise or settlement rules.

A producer might prefer a tailored physical forward matching an expected shipment date, while a consumer might use exchange-traded futures because they offer standardised liquidity. An option can protect against adverse prices while preserving some favourable exposure, but the premium can be costly and option value is affected by time, volatility and other factors.

It is misleading to assume futures are always safer than forwards simply because a clearinghouse is involved. Clearing reduces certain bilateral counterparty exposures but introduces margin funding, operational and liquidity considerations. Product choice should reflect the specific commercial exposure and constraints.

How hedgers use futures

A farmer expecting to sell a crop faces the risk that prices fall before harvest, so a short futures position may offset some of that decline. A food processor expecting to purchase grain faces a risk of rising prices, so a long futures position may offset some of that increase. Neither approach removes all uncertainty because spot and futures prices can differ by location, grade, date and other market conditions.

Suppose a business expects to buy 1,000 tonnes in three months. It can buy two hypothetical futures contracts of 500 tonnes each at £200 per tonne. If the contract price later rises to £230, the long futures gains £30 × 1,000 = £30,000. If the delivered cash commodity has also risen by £30 per tonne, that gain approximately offsets its additional £30,000 procurement cost before basis and expenses.

But if the delivered cash commodity rises £35 per tonne while the futures contract rises £30, the business still faces an unhedged £5-per-tonne difference, or £5,000. The hedge does not eliminate basis risk, quantity risk or funding needs. Traders should distinguish price-risk mitigation from the claim that the final business profit is fixed.

Long versus short positions and price limits

A long futures position generally benefits from increases in the contract price, while a short generally benefits from declines. Both face potentially large adverse movements. Some commodity markets have daily price bands or limit mechanisms, and certain events can reduce or halt trading. A futures position can remain economically exposed during limited trading availability.

Price limits do not operate as universal stop-loss guarantees. A market can resume at an unfavourable level, and margin obligations may continue according to applicable procedures. The CFTC’s futures trading basics warns that losses can exceed funds initially placed in an account.

Open interest and trading volume

Trading volume counts completed contracts over an interval. Open interest counts the number of outstanding contracts that remain open under a reporting methodology. One new buyer and one new seller can create additional open interest, while closing an existing pair can reduce it; many trades transfer risk between participants without necessarily changing total open interest.

Rising volume alone does not identify a bullish market. Traders should assess the changing contract month, spreads, participation and data timing. Open interest often shifts across delivery months around a roll, so a decline in the nearby contract need not signal that overall market participation is collapsing.

A practical futures due-diligence checklist

1. Verify the full exchange symbol, contract month, multiplier, quotation unit and tick value.
2. Identify physical versus cash settlement, first notice, last trading day and broker deadlines.
3. Calculate notional exposure and adverse P&L using realistic price changes.
4. Examine initial and maintenance margin, including possible increases.
5. Check spread, depth, exchange hours and whether liquidity has moved to another expiry.
6. Research physical inventories, relevant market fundamentals and basis.
7. Document what a roll would entail, including the new contract and changing term structure.
8. Assess losses beyond planned margins and the possibility of execution gaps.

Stress testing margin needs before opening a contract

Leverage is best understood through plausible cash losses under adverse price paths rather than through the margin percentage alone. Suppose a hypothetical energy contract represents 1,000 units at $60, for $60,000 notional exposure. A $3 decline generates a $3,000 loss; a $12 decline generates a $12,000 loss before fees. If initial margin is $6,000, the larger move is twice the initial amount. This is why “I have enough to meet initial margin” is not a complete capital or risk plan.

Consider a sequence of daily losses rather than only an ending price. An investor may be required to post variation margin during a drawdown even if prices later recover. Failure to provide funds can result in involuntary liquidation, converting what might have been a temporary adverse move into a realised loss. A commercial hedger can face the same funding problem despite its physical business exposure moving favourably.

Choosing the relevant delivery month

Futures prices can vary markedly by maturity, especially when near-term inventories are scarce or seasonal demand is strong. A manufacturer buying raw material in January may not be well hedged by a contract settling several months later, even if the commodity name is the same. A mismatch creates time-basis exposure as well as grade and location risk.

Analyse volume and open interest by contract month, but do not equate a high open interest reading with guaranteed exit liquidity. Ask whether the chosen month has a tight market at the intended order size and whether its settlement date matches the physical exposure. For a producer with uncertain output volume, hedging the entire forecast quantity can also introduce risk if poor weather or production failures prevent delivery of the expected amount.

Why clearing reduces some risks but not all risks

Central clearing can reduce direct bilateral credit exposure by interposing a clearing infrastructure under its rules, maintaining margin and default-management arrangements. That does not remove commodity price risk, market impact, operational interruptions or liquidity stress. Clearinghouse resilience and broker procedures matter, and an individual customer still needs to understand how funds and positions are held.

In volatile periods, initial margin and haircuts may change as risk models respond. If several positions are correlated, a portfolio can face simultaneous losses across instruments, potentially forcing sales at unfavourable prices. Hedging effectiveness, position size and cash liquidity should be assessed together, not as separate administrative concerns.

Frequently asked questions

Can futures losses exceed initial margin?

Yes. Margin is collateral rather than a loss limit. Depending on the product and broker terms, adverse moves can create obligations greater than the amount initially deposited.

Do all commodity futures require delivery?

No. Some are cash settled, and many positions in physically deliverable contracts are closed before relevant delivery procedures. The trader must verify the actual contract terms.

Can I hold a future indefinitely?

Individual contracts expire. A rolling strategy can maintain exposure by replacing one maturity with another, but rolling changes the contract and can create additional risks and expenses.

Does initial margin equal the premium of an option?

No. Margin supports ongoing obligations under an exposure, while an option premium is the price paid for specific contractual rights. Option writers may also face margin requirements.

Why does a producer hedge by selling futures?

A producer expecting to sell a commodity generally loses revenue when its cash selling price declines. A short futures position can benefit from a futures-price decline, potentially offsetting part of the physical loss.

Key takeaways

Futures are standardised financial commitments, not simplified purchases of physical commodities. Understanding the contract size, tick value, daily settlement, leverage, expiry and delivery provisions is essential before considering a trade. Hedging can reduce one dimension of price risk while leaving basis, margin-funding and operational risks.

Related Commodities Education

To connect contract mechanics with physical markets, explore WTI and Brent oil fundamentals, grain futures and crop hedging, and the six-pillar commodity analysis process.

Sources and further reading

• CFTC — Basics of Futures Trading.
• CME Group — Daily Mark-to-Market.
• CME Group — Micro WTI Contract Comparison.

Further structured learning: Explore the Professional Multi-Asset Trader Programme for more systematic education about commodities within a wider multi-asset research process. This course provides education, not trading signals or personalised financial advice.

Important notice: Education only, not personal advice or a trading recommendation. Contract specifications and rules can change. All unlabelled numerical market levels in examples are hypothetical; leveraged futures can generate substantial losses and margin obligations.