Manufacturers do charge sales tax, but only on a narrow slice of their transactions. Tax applies when the buyer is the final user of the product and the manufacturer has nexus in the state where the goods are delivered. Because most manufacturer sales go to wholesalers, distributors, or retailers who will resell what they buy, the majority of a typical manufacturer’s revenue flows through tax-free under the resale exemption. The work lies in identifying the exceptions, tracking which states require collection, and keeping documentation that proves each exempt sale was legitimate.
Sales tax is a state and local levy. There is no federal sales tax, and the rules shift from one jurisdiction to the next. Forty-five states impose a statewide sales tax; the five that do not are Alaska, Delaware, Montana, New Hampshire, and Oregon.1Tax Foundation. State and Local Sales Tax Rates, 2026
When a Manufacturer Has to Collect
A manufacturer steps into a retailer’s shoes any time it sells to someone who will actually use the product. The clearest example is direct-to-consumer selling, whether through a factory outlet, a website, or a phone order. In those sales, the manufacturer owes the same collection duty any store would, applying the combined state, county, and municipal rate for the delivery address.
The same rule reaches sales that fall outside the manufacturer’s normal product line. Selling off surplus office furniture, a decommissioned machine, or a used delivery truck to a business that plans to use the item internally is a taxable sale. The buyer is not putting the item back into the supply chain, so tax applies.
Collection is only required in states where the manufacturer has nexus, the legal connection that creates a collection obligation. Without nexus, there is no duty to collect, no matter who the buyer is or what the product is used for.
Why Wholesale Sales Are Tax-Free
The resale exemption is what keeps sales tax from stacking at every step of the supply chain. When a manufacturer sells to a wholesaler or retailer who will resell the product, no tax is charged. The tax gets collected later, when the product reaches the person who will actually use it.
Without this exemption, every business-to-business transaction would embed a layer of tax in the price, a problem known as tax pyramiding. That hidden stacking raises consumer prices, distorts business decisions, and penalizes in-state manufacturers competing in national markets. The resale exemption exists to prevent it.
The exemption reaches further than finished goods. When a manufacturer sells component parts to another manufacturer who incorporates them into a finished product, that sale qualifies too. The component is taxed only when the completed product reaches an end user. The key requirement is intent: the buyer must genuinely plan to resell the item in the ordinary course of business.
Intent matters because not every purchase by a retailer qualifies. If a retailer buys a product to use as a permanent display model, give away as a promotion, or consume internally, that purchase is taxable. The manufacturer should verify the buyer’s stated purpose before accepting an exemption claim, because the distinction between buying to resell and buying to use determines whether tax applies.
The legal burden sits with the manufacturer as the seller. If a state auditor examines the transaction and no valid exemption certificate is on file, the manufacturer owes the uncollected tax plus penalties and interest. Getting proper documentation before or promptly after the sale is the only real protection.
Drop Shipping Trips People Up
Drop shipping creates a three-party puzzle that catches manufacturers regularly. In a typical arrangement, a retailer takes an order from a customer and directs the manufacturer to ship the product straight to that customer. Two separate transactions happen at once: the retailer sells to the customer (a retail sale) and the manufacturer sells to the retailer (a wholesale sale that should qualify for the resale exemption).
The complication arises when the retailer has no nexus in the state where the customer receives the goods. The manufacturer, which may have nexus there because it ships from a local warehouse, faces pressure to collect tax on its sale to the retailer. Most states let the manufacturer accept alternate documentation from the retailer to prove the transaction is a resale, but the rules for what counts as acceptable documentation vary. Manufacturers that drop ship into multiple states need to track each state’s requirements or risk getting stuck with the tax bill.
Economic Nexus Changed Who Has to Register
Before 2018, a manufacturer only had to collect sales tax in states where it had a physical presence, such as a factory, warehouse, or employees. The Supreme Court’s decision in South Dakota v. Wayfair changed that by letting states require tax collection based purely on economic activity within their borders.2Supreme Court of the United States. South Dakota v. Wayfair, Inc.
Every state with a sales tax has since enacted an economic nexus law. The most common threshold is $100,000 in sales into the state during the current or prior calendar year. A few states set higher bars: Alabama and Mississippi use $250,000, while California and New York require $500,000. Once a manufacturer crosses the applicable threshold, it must register, collect, and remit on all taxable sales into that state, regardless of where the manufacturer is physically located.3Streamlined Sales Tax Governing Board. Remote Seller Thresholds Terms
Transaction-Count Triggers Are Fading
When states first adopted economic nexus laws, most included an alternative trigger of 200 separate transactions. A manufacturer that made 200 small sales into a state would owe collection duties even if total revenue fell well below $100,000. That is changing. As of January 2026, roughly half the states with economic nexus laws have eliminated their transaction threshold entirely, leaving only the dollar amount. Colorado, Illinois, Indiana, Iowa, Maine, and North Carolina have all dropped the transaction count in recent years. About 18 states still use a transaction-based alternative.
Exempt Wholesale Sales Can Still Create a Filing Duty
This is where manufacturers get blindsided. Whether tax-exempt wholesale transactions count toward the economic nexus threshold depends on how each state defines its threshold. States that use “gross sales” include everything, even sales that would be exempt when filed. States that use “retail sales” exclude sales for resale but include other exempt sales. States using “taxable sales” count only transactions that actually generate tax.3Streamlined Sales Tax Governing Board. Remote Seller Thresholds Terms
A manufacturer doing $5 million in wholesale business into a gross-sales state will blow past the threshold even if every single transaction is exempt from tax. The registration obligation still triggers, and the manufacturer must file returns in that state even if every sale reported is non-taxable.
Exemption Certificates Are the Whole Defense
An exemption certificate is the manufacturer’s proof that a sale was legitimately tax-free. Without one on file, the manufacturer is liable for the uncollected tax if the transaction is audited, even if the sale genuinely qualified. This is not a theoretical risk. Auditors routinely pull a sample of exempt transactions and check for certificates first; missing paperwork is the fastest route to a large assessment.
A properly completed certificate typically includes the buyer’s name, address, and state tax identification number, the reason for the exemption, a description of the property being purchased, and a signature from an authorized representative of the buying company. Each state has its own form and its own rules for what counts as complete.
The Streamlined Sales Tax Certificate of Exemption simplifies this for transactions involving its 24 member states, letting a single form cover purchases across multiple jurisdictions.4Streamlined Sales Tax Governing Board. Exemptions Not every exemption type is available in every member state, so manufacturers should confirm that the specific exemption claimed on the form is valid where the sale occurs.
Member states of the Streamlined agreement relieve sellers of tax liability when they obtain a properly completed certificate within 90 days of the sale.5Streamlined Sales Tax Governing Board. Relaxed Good Faith Requirement Outside the Streamlined system, most states apply a similar good-faith standard: if the manufacturer accepted a certificate that appeared reasonable on its face and had no reason to believe the exemption claim was fraudulent, the liability shifts to the buyer.
Keep certificates for at least the length of the state’s assessment period. Most states use a three-year statute of limitations for sales tax assessments, though several set it at four years, and the period extends to six or more years when a return substantially understates tax owed. If no return was filed at all, many states impose no time limit. Holding certificates for a minimum of four years, and longer in states with extended periods, is the safest approach.
What Happens When Collection Is Missed
The consequences of failing to collect or remit go well beyond paying the back taxes. States impose both penalties and interest, and the amounts stack up quickly on a manufacturer’s transaction volumes.
Failure-to-file penalties typically range from 5% to 25% of the tax due, depending on the state and how late the return is. Some states charge a flat percentage, while others impose a monthly escalating penalty that caps at 25% or higher. A few states add a minimum dollar penalty even when the tax due is small. Interest accrues separately on the unpaid balance from the original due date until payment, and rates vary by state.
The bigger risk for manufacturers is a retroactive assessment. If a manufacturer crossed an economic nexus threshold two years ago and never registered, the state can assess tax on every taxable sale made during that entire period, plus penalties and interest running from each missed filing date. For a manufacturer with significant sales volume into a state, even a single overlooked registration can generate a six-figure liability.
Manufacturers that voluntarily come forward before an audit begins can often reduce or eliminate penalties through a state’s voluntary disclosure agreement program. Most states offer these programs, and they typically waive penalties and limit the look-back period in exchange for the manufacturer registering and becoming compliant going forward. Waiting until an audit notice arrives eliminates that option.