What Are Futures Contracts? The Complete Guide for Traders

Every market has a way to speculate on the future. Futures contracts are the oldest and most direct version of that idea – and today they are one of the most actively traded instruments on the planet, with trillions of dollars in notional value changing hands across CME Group exchanges every single day.

Yet most traders who start with stocks or crypto have only a vague sense of what a futures contract actually is. They know it involves commodities, or oil prices, or something Wall Street does. The mechanics are murkier.

This guide covers exactly that: what futures contracts are, how they work at a mechanical level, who trades them and why, and what you need to understand before placing your first trade.

The Core Concept

A futures contract is a legally binding agreement to buy or sell a specific asset at a specific price on a specific date in the future.

That sentence sounds simple, but each word is doing work.

Legally binding means this is not an option or a verbal contract. Both parties are obligated to fulfill the terms of the contract unless the position is closed before expiration.

Specific asset means the contract defines exactly what is being traded: 5,000 bushels of corn, 1,000 barrels of crude oil, $250 times the value of the S&P 500 index. Nothing is vague.

Specific price is agreed upon right now, even though the transaction happens later. This is the core economic function of futures: locking in a price today for something that will change hands in the future.

Specific date is the expiration date. Every futures contract has one.

A Brief History Worth Knowing

Futures did not originate on Wall Street. They were invented in 19th-century Chicago by grain farmers and grain buyers who needed to manage price uncertainty between harvest and delivery. A farmer planting corn in April had no way to know what corn would trade at in September. A cereal manufacturer buying corn in September had no way to budget. The futures contract solved both problems by letting them agree on a price in advance.

That logic – locking in a price today for a transaction that happens later – still drives every futures market in existence. The asset class has expanded from grain to energy, metals, financials, currencies, stock indexes, and interest rates, but the underlying mechanics have not changed since those Chicago trading pits.

Buyers, Sellers, and What They Are Actually Agreeing To

Every futures contract has two sides: a buyer (the long) and a seller (the short).

The long agrees to buy the underlying asset at the contract price when the contract expires. If prices rise before expiration, the long profits because they locked in a lower price than the market is now offering.

The short agrees to sell the underlying asset at the contract price. If prices fall before expiration, the short profits because they locked in a higher price than the market now reflects.

Neither party has to hold through expiration. The vast majority of retail futures traders never do. They enter a trade, hold for hours, days, or weeks, and then close the position by taking the opposite side before the contract expires. The gain or loss is settled daily through a process called mark-to-market.

This daily settlement is one of the fundamental differences between futures and other markets. Your account is credited or debited every day based on where the contract closed, not just when you exit the trade.

What Gets Traded in Futures Markets

Futures contracts exist across six major categories:

Equity Index Futures track stock market indexes. The most actively traded are the E-mini S&P 500 (ES), the Nasdaq-100 (NQ), the Dow Jones (YM), and their micro-sized equivalents (MES, MNQ, MYM). These are what most retail day traders focus on.

Energy Futures include crude oil (CL), natural gas (NG), and heating oil. These are heavily influenced by geopolitical events, inventory reports, and OPEC decisions.

Metal Futures cover gold (GC), silver (SI), copper (HG), and platinum. Gold futures in particular are widely used as a macro hedge by both institutional and retail traders.

Agricultural Futures include corn, soybeans, wheat, cattle, and lean hogs. These are the original futures contracts and remain actively traded by producers, food companies, and speculators.

Interest Rate Futures track U.S. Treasury bonds and notes (ZB, ZN, ZF). These are primarily institutional products, though active traders use them to position around Federal Reserve decisions.

Currency Futures cover major currency pairs including the euro, Japanese yen, British pound, and Australian dollar, traded as standardized CME contracts rather than the decentralized forex market.

How Contract Expiration Works

Every futures contract has an expiration date. On that date, the contract settles and ceases to exist.

For traders who want to maintain exposure beyond expiration, the process is called rolling: closing the expiring contract and opening a new position in the next available contract month. Most professional traders roll before expiration to avoid settlement obligations and liquidity issues in the final days of a contract’s life.

Contract months are denoted by letter codes. March is H, June is M, September is U, December is Z. So “ESM26” refers to the E-mini S&P 500 June 2026 contract.

The front month (the nearest expiration) is typically the most liquid and carries the tightest bid-ask spreads. As expiration approaches, volume migrates to the next contract month.

Most traders track the roll date, which is when the majority of open interest has moved to the next contract.

Cash Settlement vs. Physical Delivery

When a futures contract expires, one of two things happens: cash settlement or physical delivery.

Cash settlement means no physical asset changes hands. The contract simply settles to the final cash value of the underlying index or instrument, and any remaining profit or loss is credited or debited to the accounts involved. Most equity index, interest rate, and currency futures settle this way. If you hold an E-mini S&P 500 contract to expiration, you receive or pay the cash difference between your entry price and the final settlement price.

Physical delivery means the actual commodity is delivered. A crude oil futures contract (CL) held to expiration obligates the long to take delivery of 1,000 barrels of crude oil at a designated facility in Cushing, Oklahoma. The short must deliver it. This is not theoretical. In April 2020, WTI crude oil futures briefly went negative partly because traders holding long positions could not take physical delivery and were desperate to exit.

Retail traders do not hold physical delivery contracts to expiration. Brokers typically have automatic liquidation policies for accounts that hold commodity contracts too close to the delivery window. If you are trading energy or agricultural products, know your broker’s last-trading-day policy.

Margin: How Futures Are Actually Financed

Futures do not require you to pay the full value of the underlying contract. Instead, you post margin, which is a performance deposit that covers potential daily losses.

There are two types of margin in futures trading:

Initial margin is the amount required to open a position. This is set by the exchange (CME Group) and can be adjusted by your broker. For a standard E-mini S&P 500 contract, exchange minimum initial margin is several thousand dollars, but many brokers offer reduced intraday margins.

Maintenance margin is the minimum balance required to keep the position open. If your account falls below this level due to losses, you receive a margin call and must deposit additional funds or have your position liquidated.

Micro futures have significantly reduced margin requirements. At Ironbeam, micro contract intraday margins start as low as $50, which makes it possible to trade index futures with a fraction of the capital required for standard contracts.

This leverage structure is what makes futures both powerful and unforgiving. A small move in the underlying asset can produce outsized gains or losses relative to the margin posted. Understanding this dynamic before placing your first trade is not optional. 

Tick Size and How You Actually Make (or Lose) Money

Futures prices do not move in arbitrary increments. Each contract has a defined minimum price movement called the tick, and each tick has a fixed dollar value.

For the E-mini S&P 500 (ES), the tick size is 0.25 index points, and each tick is worth $12.50. Four ticks equal one full point, worth $50. For the Micro E-mini (MES), the tick value is $1.25 per tick.

Knowing the tick value is the foundation of position sizing and risk management. Before entering any futures trade, you should know exactly how much money you make or lose per tick, and how many ticks of adverse movement your account can absorb before a stop-loss triggers. 

How Futures Compare to Other Markets

Traders who come to futures from stocks, options, crypto, or forex often find that the markets are more similar than they expected in some ways and dramatically different in others.

The most significant structural advantages of exchange-traded futures over alternatives like forex and CFDs are:

• Centralized, regulated exchanges. All U.S. futures contracts trade on CME Group exchanges and are regulated by the CFTC. There is no dealer market, no price manipulation by a counterparty broker, and no question about whether fills are real.
• No Pattern Day Trader rule. Stock traders with accounts under $25,000 are limited to three round-trip day trades per five business days. Futures traders face no such restriction regardless of account size.
• Tax treatment. Futures gains are taxed under IRS Section 1256 rules: 60% long-term, 40% short-term, regardless of holding period. This is generally more favorable than short-term stock trading taxation.
• Near 24-hour markets. Equity index futures trade nearly around the clock on weekdays, giving traders access to overnight price action around global events

How to Open a Futures Trading Account

Futures accounts are opened through a registered Futures Commission Merchant (FCM) or an Introducing Broker (IB). The process involves selecting a broker, completing an application that includes financial disclosures and trading experience questions, funding the account, and selecting a trading platform.

Ironbeam is a registered FCM regulated by the CFTC and NFA, which means customer funds are held in segregated accounts and the firm operates under the full oversight framework of U.S. futures regulation.