What it is

A drop shipment is a three-party transaction: a customer orders from a retailer, but instead of shipping from its own stock, the retailer has its supplier (or manufacturer) ship the goods directly to the customer. For sales tax, this single delivery is treated as two separate sales:

• Sale 1 — Supplier → Retailer: a wholesale sale for resale, which should be exempt from sales tax if the supplier accepts a valid resale certificate from the retailer.
• Sale 2 — Retailer → Customer: a taxable retail sale, on which the retailer collects sales tax from the customer if the retailer has nexus in the customer’s (ship-to) state.

The state whose rules apply is the ship-to state — where the goods are delivered to the customer. The whole knot of “drop shipment tax” comes from one fact: nexus determines who’s responsible, and the supplier and retailer often have nexus in different states.

Why it matters to a multi-state seller

The problem surfaces when the supplier has nexus in the ship-to state but the retailer does not. Normally, Sale 2 (retailer → customer) is where tax is collected. But if the retailer isn’t registered in that state, it can’t collect — and the supplier, which does have nexus there, is now compelled by law to either charge tax on Sale 1 or accept a valid resale certificate to treat it as exempt.

That’s where the friction bites. To accept the resale exemption, some states require the retailer to provide a certificate issued by that specific state — which means the retailer must be registered there, defeating the point of not having nexus. If the retailer can’t produce the accepted documentation, the supplier charges tax on the wholesale price, and that cost lands on the retailer with no easy customer to pass it to.

For a multi-state seller, this means drop-ship arrangements can create surprise tax costs or registration pressure in states you never sold into directly. It’s a classic case where the legal answer depends entirely on each party’s economic nexus and registration status, state by state.

Worked example

A retailer with no nexus in State X sells a $1,000 item to a customer there. The retailer’s supplier does have nexus in State X and the state’s rate is 7%.

• Sale 2 (retailer → customer): The retailer has no nexus in State X, so it does not collect the $70 of tax from the customer.
• Sale 1 (supplier → retailer): The supplier has nexus in State X, so it must either charge tax or accept a resale certificate.
• If State X accepts the retailer’s home-state resale certificate: Sale 1 is exempt, the supplier charges $0 tax, and the customer may owe use tax.
• If State X requires its own in-state certificate (which the unregistered retailer lacks): the supplier must charge tax on the wholesale price — $600 cost × 7% = $42 — which the retailer eats.

Same transaction, two outcomes — driven solely by whether the ship-to state accepts an out-of-state resale certificate.

State-level nuance

States split on which resale documentation a supplier may accept from a drop-ship retailer:

Because the “strict” group changes, always confirm the ship-to state’s current rule before relying on a certificate.

How this connects to staying compliant

Drop shipping doesn’t change the fundamentals — it just splits the transaction across two parties whose nexus may differ. To stay compliant: (1) know your own nexus in every state you ship into; (2) maintain valid resale certificates where your suppliers require them; (3) confirm whether each ship-to state accepts an out-of-state certificate or demands its own; and (4) register where drop-shipped volume pushes you over a threshold anyway.

Sources: Sales Tax Institute — How do Drop Shipments work for sales tax purposes?: https://www.salestaxinstitute.com/sales_tax_faqs/drop-shipment-faq TaxJar — Sales tax 101: I’m in a drop shipping relationship. Now what?: https://www.taxjar.com/blog/drop-shipping-scenarios-sales-tax