Every load you ship is priced through one of two mechanisms: the spot market or a contract rate. Understanding when to use each and how to balance your freight portfolio between them is one of the most impactful decisions in freight procurement. Get it right, and you save money while maintaining reliable service. Get it wrong, and you either overpay or scramble for capacity when you need it most.
How Spot Market Pricing Works
The spot market is real-time freight pricing. You post a load (or your broker does), and carriers bid based on current supply and demand. Spot rates fluctuate daily, sometimes hourly, based on available trucks in the area, time of day, day of week, weather, and dozens of other factors. Spot rates are transparent and market- driven, but they are also volatile. In tight markets, spot rates can spike 30-50% above normal. In soft markets, they can drop 20-30% below contract rates. The average shipper pays 5-15% more on spot than contract over a full year, but savvy shippers can beat contract rates during soft periods.
How Contract Rate Pricing Works
Contract rates are negotiated between a shipper and carrier (or broker) for a defined period, typically 12 months. The rate is fixed (sometimes with fuel surcharge adjustments) and the carrier commits to providing capacity at that rate. Contract rates provide budget predictability and capacity assurance, both critical for operations planning. However, contracts require volume commitments, and if the market drops significantly below your contract rate, you are still paying the higher price. Learn more about negotiating contract rates.
Finding the Right Balance
Most logistics professionals recommend a 70-80% contract, 20-30% spot split. Your core lanes with predictable, consistent volume should be under contract for cost stability and capacity assurance. The remaining 20-30% stays flexible for spot market opportunities, overflow volume, new lanes, and one-time shipments. During soft freight markets, shippers may increase their spot allocation to capture lower rates. During tight markets, having strong contracts becomes invaluable.
Mini-Bid and Short-Term Contract Strategies
Annual contracts are the standard, but some shippers are moving to quarterly or semi-annual mini-bids that allow faster rate adjustments. This hybrid approach captures some contract benefits (committed capacity, known rates) while allowing more frequent market corrections. Mini-bids work well in volatile markets but require more procurement effort. Consider mini-bids for your highest-spend lanes where even small rate improvements generate significant savings.
Making Data-Driven Decisions
Track your actual spot vs. contract costs by lane over time. Many shippers discover that specific lanes consistently favor one model over the other. A lane with steady year-round demand might always be cheaper on contract. A seasonal lane might be cheaper on spot for 8 months and more expensive for 4. Use this data to optimize your contract-spot split by lane, not just as an overall portfolio percentage. Your freight management partner can help you analyze lane-level data and build an optimized procurement strategy.