Commodity Basis: Location, Quality, Logistics and Freight Differentials
Origin cash, export port, destination and exchange futures need not carry the same price. Basis compresses local balance, quality, storage, inland transport, port operations, ocean freight and delivery month into a difference between cash and a reference future. This guide fixes the sign and rebuilds that difference from physical cost and capacity to test apparent arbitrage.
Who this guide is for: Readers who want to understand why a benchmark future and a real local commodity price differ
Key points to understand first
- This guide defines basis as cash minus reference futures and fixes sign, location, grade and maturity first.
- Location spreads depend on capacity, direction, waiting and contractual access as well as distance and variable freight.
- Quality premiums need testing values, deliverable rules, processing yield and substitution.
- Expiry convergence concerns deliverable grade and location; arbitrary physical material need not equal the future.
Every layer between benchmark and destination requires a definition
- 01Reference future
One maturity, deliverable grade and location
- 02Local basis
Regional balance, aggregation, inventory and buyer competition
- 03Quality adjustment
Grade, composition, moisture, purity and yield
- 04Inland logistics
Truck, rail, river and pipeline
- 05Port and storage
Transfer, demurrage, warehouse, loss and insurance
- 06Ocean and destination
Freight, voyage, discharge, tariff and currency
Basis is an equation, cash location and reference maturity together
This guide defines basis as cash price minus futures price. A higher value is strengthening and a lower value is weakening. Some industries reverse the sign, so retain the formula rather than copying the number. Attach bid or offer, delivery point, grade, quantity, payment terms and timestamp to cash.
Basis = local cash price − reference futures priceBasis change = current basis − previous basisDelivered price ≈ origin cash + quality + inland + port + ocean + tax/currency adjustmentsThe sign depends on the equation. Align currency, unit, timestamp and maturity.Cash 98 and futures 100 produce a basis of −2. Cash 101 and futures 102 produce −1, a strengthening of 1. Outright cash rose and basis strengthened, but basis can also strengthen while both prices fall. Keep outright and relative changes separate.
Local balance, storage and takeaway capacity move basis
Harvest can overwhelm elevator, warehouse, rail and barge capacity, widening a local discount. A processor procurement campaign can strengthen basis in a low-supply period. Crude output can discount when pipeline takeaway binds and recover when capacity expands.
A holder compares selling now with expected future basis after storage, finance and deterioration. Capacity, credit, inventory finance, certification and minimum lots constrain that option. A spread above warehouse tariff is not universally arbitrageable.
| Direction | Physical candidates | Evidence |
|---|---|---|
| Stronger | Local demand, takeaway, lower stock, scarce grade | Bids, shipment, stock and grade |
| Weaker | Harvest, outage, full storage, lower demand | Crop pace, freight, queue and runs |
| Abrupt | Outage, weather, policy or notice period | Operator notice and primary release |
| Inconsistent | Timestamp, unit, maturity or bid/offer | Data specification |
Translate quality into test results, yield and usability
Wheat protein and moisture, crude API and sulfur, metal purity and coffee grade change processing yield, equipment fit, storage and final value. A premium represents economic use and scarcity relative to the benchmark, not reputation alone.
Distribution matters more than an average. Adequate total output can coexist with scarce deliverable grade. Review testing, sampling, tolerance, substitute grades and discount schedules before comparing quality systems.
Freight prices capacity, direction and waiting—not distance alone
Truck, rail, river, pipeline and vessel differ in capacity and cost. Backhaul, fuel, crew, draft, seasonal water, canals, congestion, demurrage and insurance move freight. Identical ocean freight can still produce different delivered values through inland basis and port cost.
Freight assessments differ by vessel, route, duration and fuel responsibility. Do not apply spot freight to a term cargo without checking FOB, CFR, CIF or other cost allocation. Add currency and tariffs at destination.
- Route: origin, aggregation, inland, port, ocean and destination.
- Capacity: nameplate, operating, booked, direction, outage and season.
- Time: queue, voyage, inventory, contract month and deadline.
- Contract: cost allocation, quality, loss, insurance, currency and tax.
Convergence applies to deliverable material at delivery locations
As expiry approaches, deliverable cash and futures are expected to converge because a large gap encourages buying the cheap side and delivering against the expensive side. Execution still requires certificates, approved brands, locations, notice, position limits, finance and load-in/out.
Remote cash, off-specification material or a different timestamp need not equal the future. Misaligned warehouse tariffs, long load-out queues and delivery options can disturb convergence. Record exchange rule and storage changes through time.
Update a delivered-price bridge and audit the residual
- Freeze the sign
Write cash minus futures, bid or offer and reference maturity.
- Align specifications
Match grade, unit, currency, location, timestamp and quantity.
- Build the route
Separate inland, port, storage, ocean, insurance and tax.
- Check capacity
Review booking, outage, queue, minimum lot and deliverability.
- Investigate residual
Return unexplained difference to demand, grade, data time or contract.
Financial Templates Hub can standardize delivered-price bridges, contract terms, freight, grade and review date. Macro Research Workbench can add relevant published EIA and COT context. Reproducibility comes before paid saving or reporting.
Local basis and change calculator
Enter aligned cash, reference futures and the previous basis.
A positive change is strengthening under this convention. Fix grade, location, maturity and bid/offer.
Frequently asked questions
Does a negative basis mean a weak market?
Not by itself. Compare history, change, location, grade, season and capacity.
Must cash and futures be equal at expiry?
Convergence is expected for deliverable material and locations. Remote or off-specification cash can differ.
Is freight enough to calculate delivered price?
No. Add inland, port, waiting, insurance, loss, quality, contract, currency and tax.
Is basis strengthening the same as cash rising?
No. Cash can fall while basis strengthens if futures fall more.
Primary sources and verification links
- CFTC | Economic Purpose of Futures MarketsCash hedging, delivery location and basis risk
- CFTC | Futures GlossaryBasis, price basing and convergence terminology
- USDA AMS | Market NewsPrimary local cash, grade and movement reporting
- USDA AMS | Grain Transportation ReportRail, barge, truck and ocean freight information
- EIA | Crude oil benchmarksCrude benchmarks and quality/location differences
Edited and published by: SG Group · Editorial approach: We prioritize primary materials from EIA, USDA, CFTC, NOAA, international commodity bodies, exchanges and index providers. Data definitions, contracts, methodologies and release times can change; verify the current source before acting.
Important notice: This article provides general education about physical commodity markets, statistics, indicators and derivatives. It is not investment advice, a product recommendation, a trade signal, a price forecast or a promise of profit. Prices, quantities and ratios are fictional calculation examples unless an official statistic is expressly identified. Contract units, delivery terms, taxes, fees, margin, trading hours and data definitions vary by commodity, region, venue, provider and date. Verify primary sources and current provider terms before acting.