Your row crop's final value depends on two moving parts: the futures price set on the Chicago Board of Trade, and the basis—the spread between that futures quote and what your elevator physically pays you at the dock. Check your state's current price to see how basis changes week to week in your region. Most farmers watch the CBOT price and assume that move controls their income. It does not. The cash price and futures basis divergence is what actually determines your return, and that gap moves independently from the headline futures number.
Cash price vs futures basis widens and narrows around harvest
Basis is the cost difference between what it takes your elevator to buy grain from you, store it, handle it, and sell it forward into the futures market or to an end-user. In spring and early summer, basis is often wide—sometimes 30 to 60 cents under the futures contract. Your elevator is carrying inventory and wants compensation for that risk.
As harvest approaches and elevator space fills, basis typically tightens. Elevators have full bins and less demand for additional grain; they shrink the discount they offer. This is not a market whim. It is a mechanical response to local supply pressure and elevator working capital.
Understanding this rhythm lets you predict when your local basis will likely improve versus worsen, separate from any CBOT move.
Quick Tips
- Track your elevator's basis quote every week, not just the CBOT price.
- Wider basis in spring/early summer means delayed harvest sales often lock better returns.
- Basis tightens into harvest; delay selling only if you expect futures to rally sharply.
- Compare basis across two or three local elevators—yours may not be the only option.
- Record basis levels each year for three to five years to spot your region's normal seasonal pattern.
Basis and Futures Price Move Independently
A common mistake: assuming that if the CBOT December corn contract rises 10 cents, your local cash price rises 10 cents. It often does not. The CBOT move and your local basis can move in opposite directions.
Imagine the December contract climbs 15 cents. Meanwhile, five grain trucks from a neighboring farm flood your local market, and your elevator's basis widens (gets worse for you) by 8 cents. Your net cash price rise is only 7 cents—not 15. Or imagine the opposite: the December contract falls 10 cents, but a rail strike cuts grain flowing into your region, and your basis tightens 12 cents. Your cash price is actually up 2 cents despite a falling futures market.
This independence is the core reason a regional price chart differs from a national futures chart. It also explains why farmers in the same state sometimes see vastly different cash prices depending on their elevator location and logistical distance from major bids.
| Scenario | CBOT Move | Your Cash Price Result |
|---|---|---|
| Futures +15¢, local basis widens 8¢ | +15¢ | +7¢ (basis worked against you) |
| Futures –10¢, local basis tightens 12¢ | –10¢ | +2¢ (basis worked for you) |
| Futures flat, basis moves wider 10¢ | — | –10¢ (all basis loss) |
| Futures +8¢, basis flat | +8¢ | +8¢ (basis neutral) |
Why Basis Widens and Tightens by Location
Transportation distance and storage availability are the primary drivers. An elevator 40 miles from a barge terminal has cheaper logistics than one 200 miles inland. The closer elevator can offer tighter (better) basis because its cost to move grain to market is lower.
Seasonal storage also creates basis swings. In years when old-crop inventory is tight, elevators hoard space and widen basis to discourage farmer sales. When they are overfull, they tighten basis aggressively to move bushels out and free bin space.
Weather also shapes basis. A regional drought can tighten basis as elevators compete harder for the shorter local supply. Basis widens when grain is abundant and elevators can be selective.
The Cash Price and Futures Basis Divergence Mistake Producers Make
The most costly error is selling during a narrow basis window while expecting the basis to tighten further. A farmer sees the CBOT price rally 12 cents and decides to lock in that gain by selling immediately. Meanwhile, basis is only 25 cents under futures—historically tight for that time of year. A week later, the CBOT price pulls back 8 cents, but basis widens to 45 cents. That farmer sold into a rare tight-basis moment and missed a better overall return later.
The inverse error is holding grain too long, waiting for basis to tighten, while the CBOT price craters. Basis tightens to 20 cents, but the contract falls 40 cents. The producer's final cash price is still much lower than if they had sold when basis was wider but the futures price was higher.
Both errors stem from tracking only one variable—either basis alone or futures alone—instead of monitoring their combined effect on your cash return. Successful crop marketing requires watching both in real time.
Building a Basis Tracking System for Your Farm
Start by recording your elevator's daily cash price and the nearest futures contract price on the same day. Subtract the cash price from the futures price and record the result. That number is your basis. Do this for at least one full marketing year—ideally three to five years if you have historical records.
Plot basis by calendar date across those years. You will see patterns: basis typically widens from January through July, then tightens sharply in August and September as harvest approaches. Your specific elevator's pattern may differ slightly, but the overall shape is predictable.
Use that pattern to set rough sell windows. If your historical basis tightens most in September, and this year September basis is already at the tight end of the range, consider selling sooner rather than waiting. If basis is exceptionally wide in June, delay harvest sales to lock in the expected tightening. Why Marketing-Year-Average Price Matters More Than Monthly Swings applies here—but knowing your regional basis rhythm lets you time within that marketing year more precisely.
Basis Tracking Protects Your Revenue Plan
Once you understand that cash price and futures basis divergence is mechanical and regional, you can build a revenue plan that includes a realistic basis assumption for each sale month. Instead of assuming the CBOT price is your entire return, you budget a cash price by subtracting your expected seasonal basis from the futures contract.
If you farm 500 acres of corn and the December contract is quoted at 4.20 per bushel, but your typical December basis is 35 cents under futures, your realistic expected price is 3.85. Budget revenue based on 3.85, not 4.20. When you execute your sales and basis behaves as expected, you meet your budget. When basis surprises you—tightening more than usual—your revenue exceeds plan. This approach removes the illusion that the CBOT price is your price.
For deeper protection, use How Crop Price Volatility Hedging Protects Row Crop Revenue tools like options or forward contracts that lock both a futures level and basis risk simultaneously, rather than relying on basis to improve at the perfect moment.
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Frequently Asked Questions
Why is my elevator's cash price different from the CBOT futures quote?
The difference is called basis. It covers your elevator's costs to buy, store, and sell your grain, plus their profit margin. Basis changes based on local supply, storage availability, and distance to major markets.
Does basis always narrow into harvest?
Typically, yes, but not always. Basis tightens when elevators fill with harvest grain and have less need for additional inventory. However, if a local glut floods the market faster than elevators can clear bins, basis can widen even into harvest.
Can I use basis timing alone to plan my sales?
No. Basis and futures prices move independently. Selling during tight basis is costly if the futures price crashes. Always monitor both together to calculate your realistic cash price before committing to a sale.
How far back should I track basis to spot seasonal patterns?
Three to five years of daily basis records gives you a solid pattern. One year is too short; weather anomalies and unusual market events can skew it. Five years captures most market cycles and regional variations.
What causes basis to widen and tighten at different elevators in the same state?
Distance to ports, rail access, and local storage capacity all affect basis. Elevators close to major shipping terminals have lower logistics costs and offer tighter basis. Inland elevators often quote wider basis to cover higher transport costs.
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