Understanding sales tax nexus distribution obligations has become one of the more consequential compliance questions facing wholesalers and distributors. A distributor that ships pallets of product into a dozen states can trigger tax registration duties in each of them, even with no warehouse, no sales rep, and no physical footprint in those states. The rules changed in 2018, and the cost of misreading them now lands squarely on the seller.
Quick answer: A wholesaler owes sales tax (or, more precisely, owes a duty to register, collect, and remit) in a new state once it crosses that state’s economic nexus threshold, typically $100,000 in sales into the state during a 12-month period, sometimes paired with or replaced by a transaction count. Most wholesale sales to resellers are exempt from tax, but the distributor must still register once nexus is established and must collect a valid resale or exemption certificate for every untaxed sale. Exempt sales do not erase the registration trigger; they only excuse the collection of tax on qualifying transactions.
How Wayfair Rewrote the Rules for Distributors
For decades, a business owed sales tax collection duties in a state only if it had physical presence there: an office, inventory, employees, or property. That standard came from the Supreme Court’s decisions in National Bellas Hess and Quill Corp. v. North Dakota. A distributor could ship into 40 states and owe collection duties in just the handful where it stored goods or stationed staff.
That framework ended on June 21, 2018, when the Supreme Court decided South Dakota v. Wayfair, Inc., overruling the physical presence rule. The Court upheld a South Dakota statute that imposed tax collection duties on sellers delivering more than $100,000 of goods or services into the state, or completing 200 or more separate transactions there, in a calendar year. This concept is called economic nexus: presence measured by sales volume rather than physical footprint.
The practical effect for distribution businesses is direct. Shipping product across state lines now creates a measurable economic connection, and once your sales into a state cross its threshold, that state can require you to register and collect. The burden tracks revenue and order volume, not real estate. For a wholesaler with growing regional accounts, nexus can appear in a new state without a single change to operations.
It is worth understanding why this matters more for distributors than for many other sellers. A distribution business often scales by adding accounts in adjacent states rather than by opening physical locations, so its geographic reach can outrun its physical presence by a wide margin. Under the old rule, that growth carried no new tax footprint. Under Wayfair, the same growth quietly multiplies the states in which the business may owe registration. The compliance map and the sales map now move together.
Where the Thresholds Sit Today
After Wayfair, nearly every state with a sales tax adopted an economic nexus standard, and the South Dakota model became the template. The most common threshold is $100,000 in sales into the state over a 12-month measurement period, though states differ on whether the period is the prior calendar year, the current year, or a rolling four quarters.
Several large states set higher bars. California and Texas each use a $500,000 sales threshold, and New York requires both more than $500,000 in sales of tangible personal property and more than 100 sales into the state. These higher figures matter for distributors precisely because wholesale order values run large; a handful of bulk shipments can clear $500,000 quickly.
A clear trend is the elimination of transaction-count thresholds. The old “200 transactions” prong from the South Dakota statute proved punishing for sellers of low-priced, high-volume goods, who could trip nexus on modest revenue. States have been dropping it: Alaska removed its 200-transaction threshold effective January 1, 2025, Utah eliminated its transaction threshold effective July 1, 2025, and Illinois followed effective January 1, 2026. The direction of travel is toward a single, revenue-based test. You can track current state-by-state figures through resources such as the Sales Tax Institute economic nexus chart and the Avalara state-by-state guide, both of which are updated as legislatures act.
The measurement period deserves a second look, because it changes when an obligation begins. A state that measures the prior calendar year gives a seller a clean annual snapshot, while a state that measures a rolling 12 months can pull a business across the line at any point on the calendar. Distributors with seasonal sales spikes are especially exposed under rolling-period rules, since a strong quarter can satisfy a threshold that an annual average would not. Knowing which clock a state runs is as important as knowing the dollar figure.
Because thresholds, measurement periods, and effective dates change frequently, a distributor selling into many states should reassess its footprint at least annually. A threshold crossed mid-year can create a registration obligation that takes effect within weeks, and several states begin counting from the date nexus is established rather than the start of the next year.
Resale Exemptions: Why Wholesalers Still Must Register
Here is the point that trips up many distribution businesses: most wholesale sales are exempt from sales tax, yet economic nexus still forces registration. Sales for resale are not subject to sales tax because tax is designed to fall on the final retail consumer, not on each step of the supply chain. A distributor selling to a retailer who will resell the goods generally collects no tax on that sale.
That exemption does not depend on collecting a certificate at the moment of sale, but proving it does. When your sales into a state exceed its economic nexus threshold, you must register with that state’s tax authority even if you expect every sale to be exempt. Registration is what gives you the authority to issue and accept resale certificates and obliges you to file returns, often reporting gross sales and then deducting exempt amounts.
The resale or exemption certificate is the document that protects the untaxed sale. For each exempt transaction, the distributor must obtain a properly completed certificate from the buyer and retain it. If a state audits and you cannot produce a valid certificate for an untaxed sale, the auditor can assess tax on that sale as though it were taxable, plus penalties and interest. The exemption is real, but it is conditional on documentation.
Two further wrinkles deserve attention. First, certificate validity is state-specific: some states accept the Multistate Tax Commission’s Uniform Sales and Use Tax Certificate, others demand their own form, and a few require the buyer to be registered in that state. Second, not every sale a wholesaler makes is for resale. Sales of supplies, equipment, samples, or goods consumed internally can be taxable, and mixed-use customers complicate the analysis. Distributors serving both resellers and end users should expect a portion of their sales to be taxable.
A practical consequence follows for recordkeeping. Because certificates can expire, become stale, or arrive incomplete, a distributor needs a process that captures a valid certificate at onboarding and refreshes it on a schedule rather than scrambling for paperwork once an audit notice arrives. The certificate file is the single best defense against a reassessment of exempt sales, and it is far cheaper to maintain proactively than to reconstruct under audit pressure.
Registration Triggers and Practical Compliance Steps
A registration trigger is the moment a state can compel you to register, and it fires the day you cross the economic nexus threshold (or, in physical-presence terms, the day you place inventory or staff in the state). For distributors using third-party logistics providers or fulfillment warehouses, stored inventory in a state can create physical-presence nexus independent of any sales threshold, so the two tests run in parallel.
Once a trigger fires, the sequence is consistent across most states. Register for a sales tax permit before making further sales into the state, begin collecting tax on taxable transactions, collect and file exemption certificates for resale sales, and file returns on the assigned schedule even in periods with no tax due. Missing the registration date does not pause the clock; states can assess back tax on taxable sales made after the trigger, and an unregistered seller has no exemption certificates on file to shield exempt sales.
The compliance load grows with each new state, and the analysis is genuinely state-specific. A distributor should map its sales by state against current thresholds, identify where it has crossed or is approaching a trigger, and confirm its certificate collection process holds up. Many states also offer voluntary disclosure agreements that can limit look-back periods and waive penalties for sellers who come forward before an audit, which is often the cheaper path when you discover a missed obligation.
A short self-audit helps keep the footprint current. Pull sales by ship-to state for the trailing 12 months, compare each total against that state’s current threshold and measurement period, flag any state within roughly 20 percent of its threshold as a watch item, and confirm a valid certificate exists for every untaxed sale in the states where you already exceed the line. Repeating that review on a set cadence turns a sprawling multi-state question into a manageable checklist.
This is where coordinated planning matters. Pease Bell CPAs works with distribution clients on exactly these questions through our distribution industry practice and our tax advisory services, helping wholesalers monitor thresholds, structure certificate processes, and decide where and when to register. The goal is to register where required, document exemptions properly, and avoid the back-tax assessments that follow an unmanaged multi-state footprint.
Frequently Asked Questions
Do wholesalers really owe sales tax if their sales are exempt for resale?
A wholesaler usually owes little or no actual tax on resale sales, but it still owes the duty to register, file returns, and collect valid resale certificates once it crosses a state’s economic nexus threshold. The exemption excuses tax collection on qualifying sales; it does not excuse registration. Without registration and certificates on file, a state can treat undocumented exempt sales as taxable on audit.
What is the most common economic nexus threshold?
The most common threshold is $100,000 in sales into a state over a 12-month period. Some large states set higher bars, including California and Texas at $500,000, and New York requires more than $500,000 in sales plus more than 100 transactions. States increasingly use a sales-only test and are dropping transaction-count thresholds.
Does storing inventory in a fulfillment warehouse create nexus?
Yes. Inventory physically stored in a state, including goods held by a third-party fulfillment provider, generally creates physical-presence nexus regardless of sales volume. This trigger operates independently of the economic nexus threshold, so a distributor can owe registration in a state where it has stored goods even if its sales there are below $100,000.
What happens if we crossed a threshold last year and never registered?
The state can assess back tax on taxable sales made after the trigger date, plus penalties and interest, and undocumented resale sales can be reassessed as taxable. Many states offer voluntary disclosure agreements that limit the look-back period and waive penalties for sellers who register proactively before being contacted by the state, which is usually less costly than waiting for an audit.
