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Inbound Freight Audit: 10 Questions Manufacturers Should Ask
By this point in the series, we have looked at the warning signs of unmanaged inbound freight, the hidden costs that can result, and the question of which supplier relationships deserve greater transportation control.
The next step is not to start changing carriers.
It is not to rewrite every supplier agreement.
And it is not to immediately move every prepaid shipment to collect.
The next step is to establish a baseline.
Before deciding what should change, manufacturers need a clear picture of what is actually happening today across freight cost, carrier selection, supplier behavior, shipment visibility, transportation performance, and internal ownership.
That is the purpose of an inbound freight audit.
An inbound freight audit is not primarily a rate-shopping exercise. It is a way to determine how much visibility and intentional control you currently have over the transportation feeding your operation.
What an Inbound Freight Audit Should Tell You
A useful inbound freight audit should help answer several larger questions:
- Do we know what inbound transportation actually costs?
- Do we know who is making transportation decisions?
- Are those decisions intentional or simply historical defaults?
- Are suppliers following a defined transportation process?
- Can we see problems before they affect production?
- Are we measuring supplier and carrier performance?
- Are transportation decisions connected to inventory and production?
- Does anyone clearly own inbound freight performance?
The purpose is not to prove that manufacturer control is always better.
Some supplier-controlled arrangements may be working exactly as they should.
The goal is to identify where greater control could create value and where existing arrangements should remain in place.
That is the difference between simply taking control and practicing intentional control.
1. Can You Identify Your Actual Inbound Transportation Spend?
Start with the most basic question:
How much did your company actually spend on inbound transportation last month, last quarter, or last year?
If answering that question requires estimates, assumptions, or statements such as "it's included in the material price," you already have an important finding.
Inbound freight may appear in several places:
- Separate freight charges on supplier invoices
- Delivered product pricing
- Direct carrier invoices
- Accessorial charges
- Expedited transportation
- Freight-related supplier fees
Without visibility into transportation spend, it becomes difficult to prioritize suppliers, identify trends, evaluate freight terms, or determine where improvement efforts should begin.
Audit question: Can we clearly separate inbound transportation cost from material cost for our significant suppliers?
2. Who Currently Controls Transportation for Each Significant Supplier?
Someone decides how every inbound shipment moves.
The important question is whether your organization knows who that is.
For each significant supplier, determine:
- Who selects the carrier?
- Who selects the transportation mode?
- Who determines the service level?
- Who pays the carrier?
- Who manages transportation exceptions?
Then ask the more important question:
Was that control arrangement deliberately chosen?
A supplier-controlled relationship may be entirely appropriate.
But "that's how we've always done it" is not the same thing as deciding supplier control still produces the best business outcome.
Audit question: Do we know who controls each major inbound relationship and why?
3. Are Freight Terms Aligned With the Level of Control You Want?
Once you know who currently controls the freight, review how the commercial terms support that arrangement.
Prepaid, collect, and FOB terms can affect:
- Who pays the carrier
- Who has the direct carrier relationship
- Who can see transportation cost
- Who bears responsibility while goods are in transit
- Who has practical control over routing
The key is not whether one freight term is universally better.
The question is whether the terms support the transportation strategy you intend to have.
Audit question: Are our freight and FOB terms intentional, or are they inherited from historical purchasing practices?
Related Article
Prepaid vs. Collect Freight: Which Is Better for Manufacturers?
4. Do Significant Suppliers Receive Clear Routing Instructions?
If your company expects suppliers to follow a particular transportation process, those expectations need to be documented and communicated.
Review whether significant suppliers have current instructions covering areas such as:
- Approved carriers
- Transportation modes
- Service levels
- Pickup and scheduling expectations
- Shipment documentation
- Accurate shipment information and classification
- Exception procedures
A routing guide that exists only inside a shared folder is not necessarily a functioning routing process.
Audit question: Do suppliers know exactly how we expect inbound freight to be handled?
5. Are Suppliers Actually Following Those Instructions?
The existence of a routing guide tells you what should happen.
Compliance tells you what is actually happening.
Look for exceptions such as:
- Unauthorized carrier usage
- Incorrect service levels
- Missed scheduling requirements
- Incomplete or inaccurate shipment information
- Routing deviations
- Unnecessary premium transportation
Then determine whether those exceptions are isolated or recurring.
If suppliers are not following the process and nobody is measuring it, the organization may have less transportation control than management believes.
Audit question: Can we quantify supplier routing compliance, or do we only notice problems when they become disruptive?
6. Can You See Production-Critical Shipments Before They Become Late?
Visibility is not simply knowing where a truck is on a map.
The operational question is whether your team receives enough information early enough to make a useful decision.
For production-critical inbound shipments, ask:
- Do we know when the shipment actually picked up?
- Do we have a reliable expected arrival time?
- Can we identify transportation exceptions while there is still time to respond?
- Can operations access the information without chasing suppliers or carriers?
If the first indication of a transportation problem is that material did not arrive, the operation has visibility after the point where it is most valuable.
Audit question: How early do we know when an inbound shipment is at risk?
7. Are Supplier and Carrier Performance Being Measured?
A manufacturer may know that certain suppliers or carriers "cause problems."
That is different from having data that shows how often those problems occur and what they cost.
Useful inbound transportation measures may include:
- On-time pickup
- On-time delivery
- Routing compliance
- Transportation exceptions
- Expedited freight
- Claims or damage
- Carrier performance
- Supplier transportation performance
Performance measurement matters because transportation price alone does not tell you whether the shipment produced a good business outcome.
A low-cost carrier that repeatedly contributes to recovery freight, downtime, or excess inventory may ultimately be one of the most expensive choices in the network.
A great freight rate can still produce an expensive manufacturing outcome.
Audit question: Do we have objective data showing which suppliers and carriers are helping or hurting transportation performance?
8. Are You Looking for Consolidation Opportunities?
Inbound freight often becomes expensive because shipments are planned independently.
One supplier ships one order.
Another supplier ships another.
A third shipment leaves the same geographic area the next day.
Each shipment may have a perfectly reasonable rate.
But the network may still be inefficient.
Look for opportunities such as:
- Multiple shipments from the same supplier during a short period
- Suppliers located in the same geographic area
- Purchase orders that could ship together
- Frequent LTL movements that may support larger consolidated shipments
- Shipping schedules that could be coordinated
These savings come from improving the process rather than negotiating a lower carrier rate.
Audit question: Are we managing shipments individually, or looking across the inbound network for better transportation patterns?
9. Are Transportation Decisions Connected to Inventory and Production?
Inbound transportation should not operate separately from manufacturing planning.
A shipment that arrives too late can disrupt production.
A shipment that consistently arrives too early can increase inventory and working-capital requirements.
Review whether transportation decisions account for:
- Supplier lead times
- Production schedules
- Inventory targets
- Safety-stock levels
- Receiving capacity
- Material criticality
This is where total-cost thinking becomes especially important.
A transportation choice that saves $100 in freight but creates downtime, overtime, recovery freight, or excess inventory may not actually be the lower-cost choice.
Audit question: Are we optimizing transportation cost, or the total economics of getting material to production when it is needed?
10. Who Owns Inbound Freight Performance?
Finally, identify who is accountable for the system.
Inbound transportation often touches:
- Purchasing
- Transportation
- Supply chain
- Receiving
- Production
- Finance
That does not mean one person has to perform every task.
But someone should have responsibility for asking whether the overall inbound process is improving.
Ownership should include visibility into areas such as:
- Transportation spend
- Supplier control decisions
- Routing processes
- Supplier compliance
- Carrier performance
- Transportation exceptions
- Improvement opportunities
If responsibility is fragmented across five departments and nobody owns the complete picture, meaningful improvement can be difficult to sustain.
Audit question: Who is accountable for the performance of our inbound transportation system?
What Your Answers Should Reveal
The point of these questions is not to produce ten yes-or-no answers.
It is to reveal patterns.
You may discover that your company has strong carrier relationships but poor supplier compliance.
You may have good cost visibility but limited shipment visibility.
You may have strong transportation execution but little connection between transportation and production planning.
Or you may discover that several major supplier relationships are still operating almost entirely by historical default.
Those patterns matter because inbound freight maturity is rarely uniform across an organization.
The purpose of the audit is not to prove that everything needs to change. It is to identify where greater control would create value and where existing arrangements are already working.
From Audit to Assessment
You can work through these questions manually and learn a great deal about your inbound operation.
But the answers become more useful when they are scored together.
That is why Customodal developed the Inbound Freight Control Assessment.
The assessment uses these same areas to evaluate your current inbound freight maturity across:
- Control and ownership
- Cost and economics
- Supplier process and compliance
- Visibility and performance
- Manufacturing integration
Your results place your operation on a maturity continuum:
Reactive → Partially Controlled → Managed → Optimized
More importantly, the assessment can help identify where your strongest capabilities exist and which areas deserve the most attention next.
Take the Next Step
Get Your Inbound Freight Control Score
Take the Inbound Freight Control Assessment to evaluate your current approach across cost visibility, transportation control, supplier compliance, shipment visibility, performance, manufacturing integration, and internal ownership.
You'll receive your maturity level, areas of strength, potential gaps, and recommended resources based on your results.
What Comes Next
Once you have established where things stand today, the next question is how inbound transportation affects the manufacturing operation beyond the freight invoice itself.
Inventory levels, production schedules, supplier lead times, receiving capacity, and transportation reliability are all connected.
The next article looks at that relationship directly.
Continue the Series
How Inbound Freight Impacts Inventory and Production Planning
Transportation performance affects much more than freight spend. Learn how inbound reliability, timing, and visibility influence inventory levels, production schedules, working capital, and operational risk.
Related Reading
Mike Eberl is the CEO of Customodal, where he helps manufacturers and shippers improve freight strategy, control transportation costs, and build stronger logistics operations. With deep experience in freight, carrier management, and supply chain strategy, Mike brings practical insight to topics like freight visibility, mode optimization, and transportation cost control.
