The common carrier exception to sales tax lets a seller leave delivery charges out of the taxable sale when an independent shipping company moves the goods and the charge appears as its own line on the invoice. It is a state-level rule, not a federal one, and the conditions are strict: the wrong carrier, a bundled invoice, an inflated shipping line, or the wrong shipping terms can each pull the entire delivery charge back into the tax base. Roughly half the states recognize some version of the exception; the rest tax delivery in some form regardless of who carried the package.
What Counts as a Common Carrier
A common carrier is a transportation company that offers its services to the general public at published rates. The U.S. Postal Service, UPS, and FedEx are the recognizable examples. Independent trucking companies also qualify when they operate as third-party businesses rather than as an arm of the seller. The defining feature is that anyone can hire them.
Contract carriers serve only specific customers under individual agreements. Some states treat them the same as common carriers for the exemption, and some don’t. The safest choice is a carrier that clearly serves the public.
Deliveries made in vehicles the seller owns or leases almost never qualify. The state views that transportation as part of the seller’s own business activity, not an independent service the buyer is paying for. Independence is the whole point of the exception: when a third party charges to move a package, the fee represents a genuine transportation cost separate from the merchandise; when the seller’s own truck makes the trip, the state sees one integrated transaction and taxes it as such.
Separately State the Charge, at Actual Cost
Even with a qualified carrier, the delivery charge has to appear as its own line item on the invoice or receipt. Bundle the product price and shipping into a single amount and the whole thing becomes taxable in virtually every state that would otherwise exempt shipping. The Streamlined Sales and Use Tax Agreement is explicit: delivery charges that are not separately stated on the billing document do not qualify for any exclusion from the sales price.1Streamlined Sales Tax Governing Board. Delivery Charges
The charge also has to reflect what shipping actually cost. A retailer who prices an item artificially low and then inflates the “shipping” line to compensate is understating taxable sales. The gap between what the carrier billed and what the seller charged the customer can be reclassified as taxable, and auditors catch this easily because the carrier’s invoice is right there in the records.
“Free shipping” promotions add a wrinkle. When the seller absorbs the cost, there is no separate charge to exempt and the question is moot. The problem arises when a seller advertises “free shipping” but folds the cost into the product price. That is functionally the same as bundling, and it makes the full amount taxable.
Handling Fees Are Almost Always Taxable
Handling is where a lot of sellers trip. Even in states that exempt shipping, handling fees are typically taxable. Handling covers packaging, crating, preparation for mailing, and warehouse processing, which states treat as services related to the sale itself rather than independent transportation.
Combine them on the invoice and it gets worse. In most jurisdictions, a single “shipping and handling” line is treated as entirely taxable because the seller hasn’t separated the exempt transportation piece from the taxable handling piece. Break them into two lines: one for the carrier’s actual transportation charge, one for any handling, packing, or preparation.
Some states tax handling even when it is separately stated. The Streamlined Sales Tax Agreement lets member states choose whether to exclude handling from the sales price or only exclude the transportation and postage components.1Streamlined Sales Tax Governing Board. Delivery Charges Treating handling as taxable everywhere is the conservative default and rarely causes overpayment problems.
Mixed Shipments With Taxable and Exempt Goods
When a single shipment contains both taxable and exempt products, the delivery charge has to be split. List one shipping amount covering the whole order and many jurisdictions will tax all of it, because the exempt portion can’t be separated out.
The Streamlined Sales Tax Agreement recognizes two allocation methods:
- Price-based allocation: divide the delivery charge by the ratio of the taxable items’ price to the total order price. If taxable products are 60% of the order value, 60% of shipping is taxable.
- Weight-based allocation: divide the delivery charge by the ratio of the taxable items’ weight to the total shipment weight.
Only the portion allocated to the taxable products is taxed.1Streamlined Sales Tax Governing Board. Delivery Charges Pick one method and stay with it. Switching between price-based and weight-based on different orders invites audit questions about cherry-picking the lower tax result.
Title Transfer and Risk of Loss
In some states, the exemption depends on when legal ownership passes from seller to buyer. The two standard arrangements come from long-established commercial shipping terms.
Under FOB (Free on Board) Shipping Point, title passes to the buyer the moment the seller hands the goods to the carrier at the warehouse. Because the buyer owns the merchandise during transit, the delivery charge is treated as a cost the buyer pays to move their own property. This arrangement tends to support the exemption.2Legal Information Institute. UCC 2-401 Passing of Title; Reservation for Security; Limited Application of This Section
Under FOB Destination, the seller keeps title until the package arrives. Delivery is part of the seller’s obligation to complete the sale, which makes shipping look like a cost of doing business rather than a separate service. Several states treat this arrangement as taxable for that reason.3eCFR. 27 CFR 46.205 – Guidelines to Determine Title to Articles in Transit
Not every state ties the delivery exemption to title transfer, but where the rule exists, the FOB terms in your purchase agreements can determine whether a year’s worth of delivery charges are taxable or exempt.
Auditors sometimes look at who bears the risk of loss to confirm when title actually transferred. Under the Uniform Commercial Code, risk of loss follows a pattern similar to title but is not identical. In a shipment contract, risk passes to the buyer when the seller delivers the goods to the carrier. In a destination contract, risk stays with the seller until tender at the buyer’s location.4Legal Information Institute. UCC 2-509 Risk of Loss in the Absence of Breach
If your contract says one thing about title but assigns risk of loss differently, the inconsistency can undermine the tax position you’re claiming. An auditor who sees FOB Shipping Point on the invoice but finds the seller filed the insurance claims and replaced lost shipments will question whether title really passed at the warehouse. Parties can shift risk of loss by agreement, but the contract language and actual practice need to match.4Legal Information Institute. UCC 2-509 Risk of Loss in the Absence of Breach
Invoices and Records That Hold Up in an Audit
Every invoice claiming the exemption should show the carrier’s name, the shipping date, the actual cost the carrier charged for that shipment, and the delivery charge on a separate line from the merchandise. A tracking number or bill of lading reference lets an auditor verify that the carrier really handled the shipment.
The shipping amount on the invoice needs to match what the carrier billed. Rounding up, adding a markup, or slipping handling costs under a “shipping” label creates problems. Charge more than the carrier’s actual fee and the excess is taxable in most states, and the discrepancy shows up quickly when the auditor compares customer invoices to carrier bills.
Tax software should be configured to apply the tax rate to the merchandise total only, not the full invoice. Default settings in many platforms tax the entire amount, and a single configuration error can generate thousands of incorrect transactions before anyone notices.
Most states require sales tax records for three to four years from the filing date, though some extend that to six or eight years when returns are underreported or not filed. The IRS recommends keeping records at least three years for income tax, extending to seven for certain deductions like bad debts.5Internal Revenue Service. How Long Should I Keep Records Because one transaction can implicate both, retain shipping documentation for at least the longer of the two periods. Auditors will ask for carrier invoices, customer invoices, and any contracts or purchase orders that specify FOB terms. Businesses that can’t produce them typically lose the exemption and owe back taxes plus penalties and interest.
What It Costs to Get This Wrong
Penalties for underpaying sales tax vary by state but commonly start at 5% to 10% of the unpaid amount, with additional monthly charges that can accumulate to 25% or more. Interest runs from the original due date, not from the date the auditor finds the error. A multi-year audit that reclassifies delivery charges as taxable can generate a large assessment once penalties and interest compound across the lookback period.
The compliance trap that catches multi-state sellers most often is assuming the rule from one state carries over to the next. It doesn’t. States that always tax delivery don’t care who carried the package or how the invoice looks, and states that recognize the common carrier exception each define the conditions a little differently. Confirm the rule in every state where you have nexus before relying on the exemption, and build your invoicing and recordkeeping to satisfy the strictest of them.