Combination Rates: Building Auditable Multimodal Freight Tariffs

A Combination Rate Is a Formula, Not a Discount

The SSDER glossary defines COMBINATION RATE as a rate or fee made from two or more factors. In practice, a carrier may combine pickup, terminal handling, ocean or rail linehaul, destination delivery and a fuel or security component into one quoted amount. The commercial convenience is real, but the buyer still needs to know what the amount represents.

A through price is useful when it reduces handoff risk and simplifies budgeting. It becomes dangerous when the provider can add an undefined leg, change the unit or move an accessorial outside the quote. Treat the rate as a calculation with controlled inputs, not as a number detached from the shipment.

Decompose the Lane Before Award

Build a leg table for origin pickup, export handling, main carriage, transshipment, inland rail or truck, destination terminal and final delivery. Record distance or zone, equipment, weight or volume basis, service window, minimum charge, currency, tax treatment and the party responsible for each leg.

Ask bidders to submit both the combined rate and the underlying components. A buyer can still award a single accountable provider, but the decomposition makes bids comparable and provides a baseline when a shipment changes from a direct move to a transfer or recovery route.

Control Scope, Substitution and Exceptions

The purchase order should define the shipment profile that the rate assumes: origin and destination, commodity, dimensions, weight, packaging, customs status, booking window and expected volume. A supplier cannot fairly apply the same combination rate to an oversized unit, a hazardous shipment and a standard pallet unless the scope says so.

Define permitted substitutions for terminals, carriers, modes and routes. Require notice when a substitution changes transit time, insurance, security, capacity or cost. An exception approval should identify the new leg, the evidence, the incremental amount and the owner of the decision.

Audit the Invoice Against the Formula

The invoice should reference the shipment, purchase order, rate version, leg or service code, quantity, unit, currency and approved exception. Procurement can then compare the billed combination against the expected formula and isolate an accessorial rather than dispute the entire invoice.

Track quote-to-invoice variance, unplanned accessorials, rate changes, missed service, manual corrections and the number of invoices that cannot be matched to a rate version. A provider with a lower headline rate but poor evidence may have a higher total cost.

Worked Example: Port Diversion

A buyer awards a truck–ocean–truck combination rate for a weekly lane. A port closure diverts the container to a second terminal. The forwarder invoices a new drayage leg, storage and a fuel adjustment, but the contract does not define the trigger or approval path.

The corrected schedule contains the standard legs, a diversion table, a pre-approved ceiling and an evidence rule. The buyer pays the genuinely incremental cost, rejects duplicate accessorials and captures the diversion in the lane-risk review.

Metrics and Governance

For combination rate procurement controls, measure both service and evidence quality. Useful indicators include first-pass acceptance, exception rate, response time, unplanned cost, document completeness, damage or discrepancy rate, and the percentage of shipments that follow the approved process. A dashboard should distinguish a supplier failure from a carrier, terminal, broker or internal master-data failure.

Review the metric trend with procurement, logistics, finance, quality and the responsible specialist. Use a monthly exception sample to test whether the control worked in a real transaction, not just whether a field was filled. Repeated exceptions should change the sourcing strategy, contract, lane design or supplier development plan.

Keep the control proportionate to risk. High-value, regulated, time-critical or safety-sensitive cargo needs stronger evidence and faster escalation than a routine shipment. Record the decision owner, approval date, source documents and follow-up action so the next buyer can understand the operating history.

Supplier and Carrier Questions

• Which COMBINATION RATE or related glossary condition is assumed in your quotation, procedure or service description?
• Which party owns each data field, physical handoff, inspection, document and exception?
• What evidence will be available before release, loading, movement, receipt, invoice approval or claim?
• What changes require advance notice, requalification, a revised price or a new risk decision?
• How will the supplier report incidents, delays, mismatches and corrective actions, and within what response time?

Implementation Sequence

Implement the control in a small, representative lane first. Capture the baseline process, test the required data and evidence, run a real transaction, and review every exception with the people who performed the work. Do not declare the control effective only because a supplier signed a procedure.

After the first three shipments or operating cycles, update the purchase-order clause, work instruction, scorecard and training. Scale the control to other suppliers only when the evidence is repeatable and the owner can explain what happens when the normal path fails.

Common Mistakes to Avoid

• Comparing through rates without normalising the legs, units and service assumptions.
• Allowing a carrier to move an accessorial from included to excluded without notice.
• Applying a standard rate to a new commodity, dimension, route or handling profile.
• Approving a changed route without recording the incremental leg and evidence.
• Auditing only the total invoice and missing a recurring component-level variance.

Procurement Implementation Checklist

• Map each origin, transfer, main-carriage and destination leg.
• Define units, minimums, currencies, fuel basis and included accessorials.
• Version the combined rate and component formulas.
• Set substitution, diversion, delay and emergency approval rules.
• Require shipment, rate ID and exception evidence on invoices.
• Review variance, accessorials, service and manual corrections monthly.

Frequently Asked Questions

Related Kurums Guides

• Freight Rates and Surcharges
• Shipping Documents for Procurement
• Freight Network Design
• Freight Contracts and Parties
• CFR vs CIF vs CIP
• Transfer Centers and Cross-Dock Handoffs

Standards and Authoritative Sources

• FIATA — Freight forwarding resources
• U.S. FHWA — Freight management and operations
• FMC — Ocean transportation intermediaries

Glossary terms covered: COMBINATION RATE, combination rate, multimodal tariff, leg, through rate, accessorial, rate audit