Share:
How to Audit Your Freight Spend in 30 Days
Freight costs rarely climb because of one obvious mistake. More often, they rise because small issues go unchecked. Duplicate invoices, avoidable accessorials, poor mode selection, weak lane discipline, and limited shipment visibility can all quietly push transportation spend higher over time. A structured freight audit helps manufacturers find those leaks and fix them before they become part of the budget.
If your team is trying to tighten cost control, this process fits directly into a broader freight cost control strategy for manufacturers .
Why a 30-Day Freight Audit Matters
A freight audit does not need to become a six-month project. In many manufacturing environments, 30 days is enough time to collect data, review patterns, identify the biggest cost drivers, and build a clear action plan. Customodal’s recent freight cost content highlights invoice auditing as a practical way to recover overpayments and catch incorrect rates, duplicate charges, and wrong accessorial fees before they pile up. Customodal’s broader supply chain cost content makes the same point: regular invoice review and cost analysis are essential for uncovering hidden transportation waste.
The goal is not to create more reporting. The goal is to answer four simple questions:
- Where is freight spend going?
- Which charges should not be there?
- Which shipping patterns are driving unnecessary cost?
- What changes will reduce spend without hurting service?
Week 1: Gather the Right Freight Data
The first step is collecting the information that shows what you are actually paying for. Start with the last three to six months of freight invoices if possible, along with shipment-level data from your TMS, ERP, carrier portals, or internal spreadsheets. Customodal’s inbound freight technology content notes that fragmented freight data creates blind spots, while a centralized system makes tracking, analysis, and exception management much easier.
At a minimum, gather:
- Carrier invoices
- Quoted or expected shipment costs
- Mode used for each shipment
- Origin and destination data
- Shipment weights, dimensions, and freight class when relevant
- Accessorial charges
- Pickup and delivery performance data
- Claims and exception records
If your team is still pulling data from disconnected systems, this is often the point where technology gaps become obvious. For more on that, see Digitizing Inbound Freight: Cut Costs with a Powerful TMS and Unlock Real-Time Freight Visibility with Customodal's 24/7 Portal .
Week 2: Review Invoices for Errors and Variances
Once the data is together, start with the most direct source of freight waste: billing mistakes and invoice variances. Customodal specifically calls out incorrect rates, duplicate charges, and wrong accessorial fees as common reasons to audit freight invoices more consistently. Even when each error is small, repeated variance across many shipments can create a significant cost leak.
Review invoices for:
- Duplicate billing
- Incorrect base rates
- Fuel surcharge inconsistencies
- Unexpected accessorials
- Freight class or reclassification issues
- Unauthorized premium service charges
- Delivery or pickup fees that do not match shipment conditions
Fuel and surcharge review matters here too. Customodal’s fuel surcharge article explains that these charges are commonly added as a percentage of base rate and updated regularly, which makes them important to verify rather than simply accept. Learn more here: Fuel Surcharges Explained .
Week 3: Identify the Accessorial Charges Draining Your Budget
After invoice accuracy, the next priority is accessorial analysis. Customodal’s digital freight management content breaks out detention, layover, liftgate services, and re-delivery fees as common examples of charges that expand the final invoice beyond the original quote. That makes accessorial review one of the fastest ways to identify avoidable freight spend.
Look for recurring charges such as:
- Detention and layover
- Liftgate charges
- Limited access fees
- Redelivery fees
- Overlength surcharges
- Cubic capacity or density deficit surcharges
- Appointment-related fees
Then ask why they happened. A charge is not just a fee. It is usually a signal. Repeated detention may point to dock scheduling problems. Repeated liftgate fees may point to bad delivery-site data. Repeated overlength or cubic-capacity charges may point to packaging or shipment configuration issues. Customodal has separate content on these surcharge categories, which makes them strong internal links for this section: Understanding Overlength Surcharge in LTL Shipping and Understanding Cubic Capacity or Density Deficit Surcharge in LTL Shipping .
There is also a newer Customodal article focused specifically on manufacturer-side missed fees: 15 Hidden Freight Charges Manufacturers Miss .
Week 4: Audit Modes, Lanes, and Service Decisions
A good freight audit does not stop at invoice review. It also looks at whether shipments are moving in the right way. Manufacturers often overspend because too many shipments move under the wrong mode, the wrong pricing strategy, or the wrong planning assumptions.
During the final week, review:
- Which lanes have the highest cost per shipment
- Which customers or facilities generate the most exceptions
- Whether LTL shipments should have been consolidated into truckload
- Whether repeat lanes belong under contract freight instead of spot pricing
- Whether urgent shipments were caused by preventable planning failures
These questions connect directly to several live Customodal resources. For mode fit, see Shipping 101: Will It Fit In the Trailer? LTL vs Truckload . For pricing strategy, see Spot vs. Contract Rates in LTL Truckload Shipping .
What Manufacturers Should Measure During the Audit
To keep the audit actionable, use a short list of freight KPIs instead of trying to measure everything at once. Focus on the metrics that show where waste is building and where process changes will have the biggest financial impact.
- Freight cost per shipment
- Freight cost per pound or per unit
- Invoice variance rate
- Accessorial frequency
- Claims rate
- On-time pickup and on-time delivery
- Mode utilization by lane
- Budget versus actual freight spend
If you are also building out the content cluster, this section can naturally link to your related post on freight KPIs for manufacturers.
Common Problems a 30-Day Audit Will Uncover
Most freight audits surface the same categories of issues first. Manufacturers often find that they are paying more than expected because shipment data is incomplete, delivery requirements are not documented consistently, lane strategies are outdated, or teams are reacting to problems instead of planning around them.
A 30-day audit often uncovers:
- Recurring billing discrepancies
- Frequent accessorial charges tied to bad shipment setup
- Poor visibility into inbound or outbound shipment status
- Too much reliance on premium or rushed freight
- Missed consolidation opportunities
- Carrier performance issues hidden inside day-to-day operations
- Spend concentration on a small number of costly lanes or customers
Customodal’s manufacturing and freight-cost content consistently ties these issues back to visibility, planning, and better use of digital tools, rather than rate-shopping alone.
How to Turn Audit Findings Into Savings
The audit only matters if it leads to changes. Once the review is complete, rank the findings by financial impact and ease of correction. Start with the issues that are both common and fixable, such as duplicate invoices, repeating accessorials, bad freight class data, or mode decisions that can be corrected quickly.
A simple action plan should assign:
- An owner for each issue
- A deadline for correction
- A KPI that shows whether the fix is working
- A process change that prevents the problem from returning
For manufacturers that want a larger operational framework, Customodal’s inbound and outbound freight guides are useful next steps: Mastering Inbound Freight: Optimizing Cost and Efficiency and Mastering Outbound Freight: Streamline Shipping for Maximum Efficiency .
Final Thoughts
Auditing your freight spend in 30 days is not about creating a perfect transportation system overnight. It is about gaining enough visibility to find the biggest leaks, challenge avoidable charges, and make better freight decisions moving forward. For manufacturers, that can mean fewer surprise fees, more accurate budgeting, and a stronger connection between logistics strategy and margin protection.
If your team is ready to take a broader look at transportation waste, start with The Manufacturer’s Guide to Freight Cost Control , then explore Beyond the Quote: Save with Digital Freight Management Tools for more ways to reduce total freight cost.
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.
