Distribution Logistics: Complete Guide for B2B Distributors

For most merchant wholesalers, the second-largest cost after product is the building, the people who walk it, and the trucks that leave it. A 21% gross on the invoice becomes 13% after pick labor, an LTL accessorial you did not see, a shortage claim, and a return that sat two weeks before anyone issued an RMA. Growth plans that ignore those lines are just busier docks.

Service failures tax you twice. A short on an A item costs the missed margin and the next three orders the buyer dual-sources. OTIF under 95% on a banner account is how you inherit portal chargebacks and a 30-day 'performance plan' you will not enjoy. Reliability is not a slogan. It is fill rate, on-time to the appointment, and a clean POD.

The Census Annual Wholesale Trade inventory-to-sales ratios are a useful outside check on whether your building is a warehouse or a museum. If you are 30% heavier than the published ratio for your kind of business and still missing A items, you are funding the wrong pallets.

Purchasing, the floor, and the traffic clerk will optimize their own pain unless you force one weekly review: fill rate on A items, order cycle time, cost per order shipped, inventory days on hand, and freight cost as a percent of sales. Local wins — a cheaper carrier, a deeper buy, a faster pick — can raise the other two costs. The review exists to catch that.

Cost per order shipped should include labor, packaging, and the allocated outbound freight, not just the carrier invoice. A $9 pick that rides a $48 LTL bill on a $220 order is a different business than a $9 pick on a $900 stop. If you do not split those, you will 'improve productivity' while contribution dies.

OSHA's warehousing page is not optional reading if you run a building with PIT equipment. A forklift incident is a logistics cost — medical, downtime, and the customer who did not get the truck. Safety and throughput are the same meeting when the dock is the constraint.

Most houses leak 2–5% of freight spend in accessorials, wrong class, and dim-weight reweighs they never dispute. A monthly audit of a 30-invoice sample — class, weight, accessorial codes, and whether the appointment was even required — pays for the clerk who does it. Rate shopping a dirty invoice is how you change carriers and keep the same leak.

LTL versus FTL is a cube-and-promise decision, not a habit. Six pallets at 4,200 lb on a 600-mile lane often still belongs on LTL. Twelve pallets at 18,000 lb on the same lane is a truck. The fork sits around 6–10 pallets or ~10,000–15,000 lb depending on cube and whether you can wait for a multi-stop. Guessing costs more than a 10-minute cube check.

Returns are a second warehouse. An RMA that sits in a cage with no disposition is inventory you already paid for and freight you will pay again. Assign an owner, a 48-hour inspect rule, and a chargeback clock for the banners that will fine you if the credit memo is late.

If the floor cannot find product, start with slotting and labels — GS1 barcode standards exist so you stop typing item numbers. If cash is stuck in C items, start with inventory policy. If the P&L is dying on outbound, start with freight audit, dim weight, and mode. If customers are charging you for shorts and late appointments, start with fulfillment and RMA.

Pilot one building or one carrier lane. A house-wide WMS cutover and a carrier RFP in the same quarter is how you miss Christmas. The spokes in this cluster are written as separate jobs: warehouse, inventory, 3PL, fulfillment, freight, the supply-chain meeting, international terms, and the transport habits that actually cut miles — not a sustainability press line.

Read FMCSA registration before you assume a pickup truck and a sprinter are 'not interstate commerce.' Authority, insurance, and hours rules show up the first time you cross a state line with someone else's freight, or the first time a banner asks for your MC number.

Worked house. Outbound freight invoices $410,000. Audit of 80 bills found $14,200 in residential and limited-access charges on accounts that have docks, $9,800 in reweigh/reclass on cartons you never cube-checked, $6,400 in detention you did not contest, and $7,100 in duplicate invoices. That is $37,500 on a sample you then extrapolated and fought. You will not collect every dollar. You will collect enough to fund the clerk and to change packaging on the 20 worst dim-weight SKUs.

The same year, RMA aging averaged 11 days and $62,000 of returns sat in a cage through peak. Half was sellable after a repack. Leaving it there was a working-capital choice, not a quality choice. Logistics leadership is disposition, not storage.

If those two paragraphs do not sound like your building, you are either unusually clean or you have not opened the invoices. Open the invoices.

Three decisions show up on almost every book once you leave the building: whether a 6–10 pallet shipment is LTL or FTL, whether your cartons are paying dim weight on air you packed, and whether the last 40–80 doors in a distant metro belong on 40 small LTLs or one pool point. The freight spoke walks the math. The short version is: cube-check before you tender, quote the accessorials you already know about, and stop treating 'we always use LTL' as a strategy.

International lanes add Incoterms 2020, ISF, and Section 301 on top of the same landed-cost habit. If the factory's term is a shrug and the HTS is 'parts,' you do not have a logistics plan. You have a future demurrage invoice. The international spoke is a matrix and a warning, not a travel brochure.

Sustainable transport in this cluster means empty miles, cube, idle, and SmartWay-style reporting a banner can audit. It does not mean a carbon-neutral badge you bought for $12. If a project does not change diesel, detention, or trailer cube, it belongs in marketing, not in the warehouse meeting. EPA SmartWay and the FTC Green Guides are the two public documents that keep that line honest.

A traffic clerk who audits 60 bills a month and a returns person who clears the cage in 48 hours will return more dollars than a 'director of supply chain' who lives in slides. Title the seats after the work exists. If nobody owns accessorials, nobody will dispute them. If nobody owns RMAs, the cage will become a room.

Cross-training is a logistics control. When the only person who can build an LTL BOL is on PTO, you will hotshot a pallet. Write a two-person rule for tender, for credit-hold release, and for destruction of unsellable returns. Auditors and insurers like that sentence. So will you on a Monday.

Temp labor on the dock is fine for a peak week if the scan is mandatory and the A items are pre-slotted. Temp labor in traffic or returns is how you duplicate a claim and miss a dispute window. Spend the overtime on the skilled seats first. The BLS wholesale trade wage tables will tell you what those seats cost in your metro; underpaying them is how the accessorial leak comes back.