How Crop Prices Work

Crop prices exist in three interconnected markets, and each one serves a different purpose. Understanding all three — and how they relate to each other — is the foundation of effective grain marketing.

The futures market is where standardized contracts for future delivery of commodities are traded on the Chicago Board of Trade (CBOT), which is part of the CME Group. Futures contracts do not represent a transaction for physical grain in most cases — fewer than 3% of futures contracts result in actual delivery. Instead, futures serve as a price discovery mechanism where thousands of buyers and sellers establish what they believe a commodity should be worth at a future date. When the agricultural press says "corn closed at $4.72," they are reporting the settlement price of a corn futures contract.

The cash or spot market is where physical grain actually changes hands. This is the price your local elevator, ethanol plant, or processor is offering to buy your grain right now, today. Cash prices are derived from futures prices but adjusted for local conditions — more on this in the basis section below. The cash price is what you actually receive when you deliver grain, and it is the number that ultimately determines your revenue.

A forward contract is an agreement between you and a buyer (typically a local elevator or processor) to deliver a specific quantity of grain at a specific future date for a price agreed upon today. Forward contracts allow you to lock in a price before harvest, providing revenue certainty for crop budgeting. The price on a forward contract is based on the corresponding futures contract month plus or minus the expected basis at the delivery point.

These three markets are linked but not identical. Futures set the general price level, basis adjusts for local conditions, and cash or forward contracts determine what you actually get paid. A farmer who only watches futures prices without understanding basis is missing a critical piece of the pricing puzzle.

A futures contract is a legally binding agreement to buy or sell a specific quantity of a commodity at a predetermined price on a future date. For grain, the most commonly traded contracts are:

• Corn (ZC) — 5,000 bushels per contract, traded on CBOT. Contract months: March (H), May (K), July (N), September (U), December (Z).
• Soybeans (ZS) — 5,000 bushels per contract, traded on CBOT. Contract months: January (F), March (H), May (K), July (N), August (Q), September (U), November (X).
• Wheat (ZW) — 5,000 bushels per contract, traded on CBOT (soft red winter). Kansas City (KE) trades hard red winter wheat, and Minneapolis (MWE) trades hard red spring wheat.

Futures prices are discovered through the continuous interaction of buyers and sellers on the exchange. When more participants expect prices to rise (bullish sentiment), they buy contracts, pushing prices higher. When more expect prices to fall (bearish sentiment), they sell, pushing prices lower. This process happens thousands of times per day and results in prices that reflect the market's best collective estimate of a commodity's value.

Nearby vs. Deferred Contracts

The "nearby" contract is the one closest to expiration — it has the most trading volume and is the most closely watched. For example, in February, the March corn contract is the nearby. After March expiration, May becomes the nearby, and so on.

"Deferred" contracts are those further out in time. Deferred months typically trade at a premium to the nearby — this premium is called "carry" and reflects the cost of storing the physical commodity (storage fees, interest on the capital tied up in inventory, and insurance). When December corn trades at $4.80 and March corn at $4.92, the $0.12 difference represents the market's estimate of the cost of carrying corn from December to March. In a normal market, carry provides an incentive for producers to store grain rather than sell at harvest.

Occasionally, the nearby month trades at a premium to deferred months — this is called "backwardation" or an "inverted" market. An inverted market signals that immediate demand is very strong relative to supply, and the market is incentivizing immediate delivery rather than storage. When you see a significant inversion, it generally means the market wants your grain now, and holding it in the bin carries risk.

The cash price at your local delivery point is calculated using a simple formula:

Basis is the difference between the local cash price and the corresponding futures contract. It can be positive or negative, and it varies by location, time of year, and local supply and demand conditions. Basis is typically quoted as a number relative to the futures contract — for example, "-25 under December" means the local cash price is $0.25/bushel below the December futures price.

For example: if December corn futures are at $4.50 and your local elevator's basis is -$0.25, your cash price is $4.50 - $0.25 = $4.25/bushel. If the basis narrows to -$0.10, your cash price rises to $4.40 even if futures have not moved at all.

What Determines Basis?

Basis reflects local conditions that the national futures market does not capture:

• Local supply and demand — an ethanol plant bidding aggressively for corn will narrow basis (make it less negative or even positive). A region with a bumper crop and limited storage will see wider (more negative) basis at harvest.
• Transportation costs — distance from major markets, river terminals, or export facilities affects basis. Corn in central Iowa (near ethanol plants and within reach of Mississippi River terminals) has a structurally stronger basis than corn in remote production areas, which face higher transportation costs to reach demand centers.
• Storage costs — basis typically widens at harvest when supply is abundant and narrows through winter and spring as available supply decreases.
• Quality and grade — basis reflects quality premiums and discounts. Corn with high moisture, low test weight, or damage may receive a wider basis (greater discount) than standard No. 2 Yellow corn.
• Transportation disruptions — river closures (due to low water or lock maintenance), rail car shortages, and trucking constraints can all cause sudden basis changes. When a major barge terminal on the Mississippi River is shut down, basis at interior elevators that normally ship to that terminal will weaken.

Why Basis Matters More Than You Think

Many producers focus exclusively on futures prices when evaluating the market, but basis often has a larger impact on actual revenue than day-to-day futures moves. Consider this: if your historical harvest basis for corn is -$0.30, but a new ethanol plant opens nearby and narrows your basis to -$0.10, you just gained $0.20/bushel in revenue without the futures market moving at all. On a 1,000-acre operation yielding 200 bushels per acre, that basis improvement is worth $40,000. Tracking your local basis over time, understanding the seasonal patterns, and knowing what events cause basis to strengthen or weaken is one of the most valuable skills a grain marketer can develop.

Crop prices are driven by the fundamental balance between supply and demand, but the specific factors that move prices day-to-day and season-to-season fall into several categories.

Supply Factors

• Planted acres — the USDA's Prospective Plantings report (released in late March) and the June Acreage report establish how many acres are devoted to each crop. Fewer acres planted generally means less production and higher prices.
• Weather and yields — growing season weather is the single largest variable in crop production. A drought that reduces US corn yields by 10 bushels per acre removes roughly 900 million bushels from supply. Conversely, ideal growing conditions can produce record yields that weigh heavily on prices.
• Global production — corn, soybean, and wheat markets are global. A drought in Brazil's Mato Grosso, a flood in Argentina's pampas, or a poor wheat harvest in the Black Sea region all affect US prices because they change the global supply-demand balance.
• Carryover stocks — the amount of grain left from the previous crop year (beginning stocks) is a critical baseline. Low carryover stocks mean the market has less cushion to absorb a production shortfall, making prices more sensitive to weather scares and demand surprises.

Demand Factors

• Domestic use — for corn, the three major domestic demand categories are ethanol production (~5.0 billion bushels/year), animal feed (~5.7 billion bushels), and food/industrial use (~1.5 billion bushels). Changes in ethanol mandates, livestock numbers, or industrial demand all affect corn prices.
• Exports — the US competes with Brazil, Argentina, and Ukraine (for corn) and Brazil and Argentina (for soybeans) in global export markets. Chinese buying patterns are particularly important — when China makes large soybean or corn purchases, it can move markets significantly.
• Crush margins and livestock economics — soybean prices are influenced by soybean crush margins (the spread between soybean cost and the combined value of soybean meal and soybean oil). When crush margins are favorable, processors increase crush rates, boosting soybean demand.

Key USDA Reports

Several government reports move crop markets regularly:

• WASDE (World Agricultural Supply and Demand Estimates) — released monthly, this is the most comprehensive supply-demand balance sheet for major crops. Changes to production, use, or ending stocks estimates can move futures several percent on release day.
• Crop Progress — released weekly during the growing season (April-November), this report tracks planting progress, crop condition ratings, and harvest progress. A drop in "good-to-excellent" ratings from one week to the next signals weather stress and tends to support prices.
• Prospective Plantings (March) and Acreage (June) — these reports establish planted acreage for the crop year and often cause significant price moves, especially when actual acreage differs from pre-report estimates.
• Grain Stocks — released quarterly, this report measures on-farm and off-farm grain inventories. It provides a reality check on consumption rates and helps validate or challenge WASDE estimates.
• Export Inspections and Export Sales — released weekly, these reports track the pace of US grain exports. When export pace is running ahead of USDA projections, it is bullish for prices; when it is running behind, it is bearish.

Technical and Speculative Factors

Fund positioning — the aggregate positions of managed money traders (hedge funds, commodity trading advisors) — can amplify price moves in either direction. When large speculators hold a substantial net long position, any bearish news can trigger a wave of selling as funds liquidate. Conversely, when funds are heavily short, bullish news can cause sharp short-covering rallies. The CFTC Commitments of Traders report, released weekly, shows these positions and provides useful context for understanding price action.

Grain marketing is not about predicting the future — it is about managing risk and capturing profitable prices when they are available. Most successful grain marketers use a combination of strategies spread across the marketing year rather than trying to sell everything at the single best price.

Pre-Harvest Marketing Tools

• Forward contracts — lock in a flat price (futures + basis) for delivery at a future date. Simple and effective, but you are committed to delivering the grain even if production falls short.
• Hedge-to-arrive (HTA) — lock in the futures portion of the price but leave the basis open. Useful when futures are attractive but you expect basis to improve between now and delivery.
• Basis contracts — lock in the basis but leave the futures price open. Useful when basis is unusually strong but you are not satisfied with the current futures level.
• Put options — purchase a price floor while retaining the ability to benefit from higher prices. Puts cost money (premium), but they provide downside protection without a delivery commitment. If prices rise above your put strike price, you sell on the cash market and let the put expire.

Post-Harvest Marketing Tools

• Cash sale — sell grain at the current spot price. Immediate revenue, no storage risk.
• Store and wait — hold grain in on-farm or commercial storage and sell when prices improve. This strategy works when carry is present in the market (deferred futures above nearby) but carries storage cost and the risk that prices may not improve.
• Basis contract — deliver grain to the elevator but leave the futures price open, locking in the basis. You set the final price later when you are satisfied with the futures level.
• Minimum price contract — deliver grain at a guaranteed minimum price (floor) with the ability to participate in price increases up to a cap. These are structured using options and typically offered by larger elevators and processors.

The Rule of Thirds

A commonly recommended approach for producers who do not have a full-time grain marketing operation is to sell in thirds: one-third pre-harvest when prices cover your cost of production plus a reasonable margin, one-third at or near harvest, and one-third post-harvest to capture potential seasonal price improvement. This approach does not capture the absolute best price, but it avoids the absolute worst, and it results in a weighted average price that is consistently above the annual average. Research from multiple land-grant universities has shown that simple systematic strategies like the rule of thirds outperform trying to time the market over multi-year periods.

The most important principle in grain marketing is this: do not try to sell the top. Consistently selling at above-average prices — even if you miss the peak — generates more long-term revenue than holding out for the best price and occasionally being forced to sell at the worst. Marketing is about discipline, not prediction.

CropInsider is built to give farmers and grain marketers the data they need to make confident pricing decisions. The platform tracks real-time futures prices for corn, soybeans, wheat, and other commodities, alongside cash bids from local elevators and basis data that shows how your market compares to the national benchmark.

Historical price and basis data helps you identify seasonal patterns and evaluate whether current prices are above or below historical norms. When combined with USDA report calendars and supply-demand analysis, this information provides a framework for deciding when to pull the trigger on forward contracts, when to store grain, and when to sell on the cash market.

Whether you are evaluating a pre-harvest forward contract, deciding whether to sell stored grain or continue holding, or monitoring basis trends to time your delivery, CropInsider puts the market intelligence you need in one place — updated in real time and designed for the way producers actually think about pricing.