Close Questions for a Cold-Chain and Hazmat Carrier
A reefer or hazmat carrier's close carries costs a dry-van fleet never has to reconcile: detention and demurrage accessorials that depend on a shipper's own dock delays, cold-chain compliance costs like reefer fuel and temperature monitoring, and hazmat surcharges that vary by lane and commodity class. Here are the questions worth answering before either FloQast or BlackLine enters the conversation.
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Are Accessorial Charges Actually Being Billed and Collected?
Detention and demurrage accessorials are earned the moment a truck sits past its free time at a shipper's dock, but they're often under-billed because dispatch doesn't always log the exact in and out times needed to support the charge. If your close shows accessorial revenue that's consistently lower than what your dispatch logs suggest was earned, that's a billing gap, not a close-tool gap. A checklist task that reconciles logged detention time against invoiced accessorials each month is what catches this, and either platform can host that task once the underlying data exists.
Is the Reefer Fuel Surcharge Tracked Separately From Base Fuel?
Temperature-controlled trailers burn diesel independently of the tractor to run the reefer unit, and that fuel cost, along with the reefer maintenance reserve, needs its own line rather than getting absorbed into general fuel expense. Blending the two hides whether your cold-chain lanes are actually profitable once the reefer's own fuel and upkeep are counted. This is a chart-of-accounts and reporting decision more than a close-platform feature, but whichever tool you use should carry a recurring task to confirm reefer costs were coded correctly that month.
Does the Hazmat Surcharge Structure Match What's Actually Invoiced?
Hazmat surcharges vary by commodity class and lane, and a rate table that's out of date compared to what dispatch is actually quoting shippers creates a quiet revenue leak. A monthly spot-check comparing a sample of hazmat loads against the current surcharge schedule is a cheap way to catch drift before it compounds across a quarter. Neither FloQast nor BlackLine builds or maintains that rate table; both can enforce that someone reviews it as a standing task.
Where FloQast Handles This Fine on Its Own
A single-entity carrier running one dispatch system and a modest number of reefer or hazmat lanes can build all three checks above into FloQast's task workflow without much friction. The volume of accessorial and surcharge transactions at this scale is usually low enough that a monthly manual review, tracked and signed off, catches the drift before it becomes material.
Where BlackLine Starts to Pull Ahead
Once accessorial and surcharge transaction volume gets high enough that a monthly spot-check can no longer credibly cover the population, or once the carrier is running multiple operating entities with different insurance and compliance requirements by commodity class, BlackLine's transaction-level matching against dispatch and billing data starts catching what a sample-based manual review misses. That's usually a fleet running well past a single dispatch office.
What a Driver or Accountant Costs Either Way
Whichever platform you land on, someone still has to own these three reconciliations every month. National wage data puts the median accountant or auditor salary at $83,680, with the 90th percentile at $144,090 for the most experienced hires1, which is a useful anchor when deciding whether to add dedicated headcount for revenue assurance work versus leaning harder on a close platform's task tracking. Trucking as a sector also runs a notably tight payables cycle, around 18.1 days2, which is worth keeping in mind when the close calendar itself, not just the accessorial detail, needs to move fast.
The Compliance Cost Line That Gets Missed
Hazmat endorsements, cold-chain certifications and the periodic testing that goes with them generate real recurring costs that don't map cleanly onto a normal expense category. If those costs get scattered across general insurance, general compliance and general maintenance lines instead of tracked as their own category, it becomes hard to know what running a hazmat or reefer lane actually costs beyond the fuel and equipment already discussed. A monthly review that pulls these costs into one line, whichever platform hosts the task, makes lane-level profitability numbers mean something instead of hiding compliance spend inside overhead.
A Simple Way to Start Regardless of Platform
Before signing up for either tool, run the three checks in this article by hand for one full close cycle using a spreadsheet built specifically for detention, reefer costs and hazmat surcharges. That exercise alone usually reveals which of the three is actually costing the most in missed or delayed revenue, and it gives you a concrete basis for evaluating whether FloQast's lighter checklist model or BlackLine's heavier matching engine is the better fit for the volume you're actually seeing, rather than guessing from a features list.
Run these checks by hand for one full close cycle:
- Compare logged detention and demurrage time against the accessorials actually invoiced.
- Track reefer fuel and reefer maintenance on their own line, separate from tractor fuel.
- Spot-check a sample of hazmat loads against the current surcharge schedule.
- Give hazmat endorsements and cold-chain certifications their own compliance cost category.
What Good Looks Like
A cold-chain or hazmat carrier closes with detention and demurrage accessorials reconciled against logged dock times, reefer fuel and maintenance tracked separately from base fuel, and the hazmat surcharge schedule confirmed current against what's actually being quoted each month.
Building The Capability (5-Stage Skill Ladder)
How to Get Started
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Reefer maintenance vendors and permit renewals are easier to track through approval and payment when they route through BILL instead of a shared inbox.
A specialized carrier managing seasonal cold-chain volume benefits from Mercury's account structure and yield on cash sitting between peak shipping seasons.
Frequently Asked Questions
Why do detention and demurrage charges get under-billed so often?
Because the charge depends on precise dock in and out times that dispatch has to log accurately, and that logging often loses priority to the more urgent work of keeping trucks moving. Without a documented process to capture those times, a carrier can legitimately earn an accessorial and still fail to invoice it.
Should reefer fuel be tracked in the same account as tractor fuel?
No. Reefer fuel and maintenance are a distinct cost driven by the trailer's cooling unit, not the tractor, and blending the two into one fuel line makes it impossible to see whether cold-chain lanes are actually profitable once that added cost is counted.
Does either platform maintain the hazmat surcharge rate table?
No. That table is a pricing and compliance decision that lives outside either close platform. What a checklist tool adds is a recurring task to confirm the rate table currently in use matches what dispatch is actually quoting, catching drift before it accumulates.
Sources
Where we quote a benchmark, we show its source. Other figures in this guide are estimates or general guidance, so check them against your own numbers.
- Annual wage, Accountants and Auditors (SOC 13-2011), US all industries. BLS OEWS May 2025, 2025.
- Payables days (AP/Sales x 365) by industry (US). NYU Stern (Aswath Damodaran), Working Capital Ratios by Industry, US, 2026.
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