Corporate income tax nexus by state is the set of rules each state uses to decide whether your business has enough connection to it to owe corporate income tax there, and those rules now range from a physical office to a dollar figure in sales, a payroll number, a licensed trademark, or in some readings even an interactive website. Thresholds for revenue-based nexus commonly sit around $500,000 in annual in-state sales, though some states go lower and at least one major state sets the line at $1 million. Six states impose no traditional corporate income tax, but four of those replace it with a gross receipts-style tax that carries its own nexus rules and none of the federal protections businesses often assume apply.
Physical Presence
Owning or leasing space in a state, whether an office, warehouse, or retail location, creates nexus. So does a temporary footprint like a construction site or a seasonal location. Inventory sitting in the state creates nexus too, regardless of who owns the building it sits in. Companies using third-party fulfillment centers frequently discover they have a physical footprint in states they never intended to enter, because raw materials, in-progress goods, and finished stock all count.
Physical presence used to be the constitutional floor. In Quill Corp. v. North Dakota, the U.S. Supreme Court held that a state could not impose collection obligations on an out-of-state seller without it.1Justia. Quill Corp v North Dakota, 504 US 298 (1992) That case dealt with sales tax, but its logic shaped income tax policy for a generation. It is no longer the ceiling on state authority, but a physical footprint still triggers nexus in every state that imposes a corporate income tax.
Economic Nexus After Wayfair
In 2018, South Dakota v. Wayfair, Inc. ended the constitutional requirement that a company be physically present before a state could tax it.2Supreme Court of the United States. South Dakota v Wayfair, Inc The case was about sales tax, but the reasoning transferred cleanly to corporate income tax: substantial revenue from a state’s customers is enough of a connection to support taxation, whether or not the company has anyone or anything located there.
States now set bright-line dollar thresholds. Cross the line during the tax year, and you owe corporate income tax in that state. The most common threshold is $500,000 in sales sourced to the state; some states set it lower, and at least one sets it at $1 million. A handful use transaction counts or other measures alongside the dollar figure.
The threshold for corporate income tax is not the same as the threshold you hear about for sales tax. The $100,000 figure that circulates in e-commerce discussions is a sales tax number. Income tax thresholds run higher because the tax applies to net income rather than to each transaction. A high-volume, thin-margin business can owe sales tax in a state long before it owes income tax there; a high-margin business selling to fewer customers can be in the opposite position.
Factor-Presence Nexus
Some states use a structured approach based on a Multistate Tax Commission model. Three business activities are measured against thresholds, and crossing any one creates nexus.3Multistate Tax Commission. Factor Presence Nexus Standard for Business Activity
The MTC’s baseline thresholds:
- Property in the state: $50,000
- Payroll in the state: $50,000
- Sales sourced to the state: $500,000
- Percentage test: 25% of total property, payroll, or sales located in the state
Adopting states do not always use the MTC’s exact numbers. Some have indexed for inflation and now sit noticeably higher; others have kept the original figures. The important feature is that nexus can arise from a single category. A company with $55,000 of in-state payroll crosses the line even if it makes no sales there. A company with $40,000 in payroll and $400,000 in sales clears neither threshold on its own.
Activities That Create Nexus on Their Own
Certain activities generate nexus regardless of dollar totals. A single misplaced worker or licensing arrangement can be enough.
Remote Employees and Contractors
Hiring someone who works from home in a state almost always establishes nexus there, even if the worker never sets foot in a company office. The state treats that employee as the corporation operating within its borders. The same reasoning reaches independent contractors performing installations, repairs, consulting, or warranty work. Remote hiring turned this from an occasional issue into a routine compliance problem, and enforcement has intensified.
Affiliates and Licensed Intellectual Property
Many states treat a local business that promotes an out-of-state company’s products for commission as creating nexus for that out-of-state company. These “click-through” rules were written for online affiliates but reach traditional referral arrangements too.
Licensing intellectual property into a state creates its own path to nexus. Royalty income from letting a local retailer use a trademark or trade name can be enough on its own, without any physical footprint. Companies with valuable brands or patents licensed across state lines carry this exposure whether or not they have people or property in those states.4Justia. Geoffrey, Inc v SC Tax Commission
Trade Shows and Short Visits
Attending a trade show or sending employees for short trips can create nexus. Many states offer narrow safe harbors, typically capping in-state days at around 14 or 15 per year and requiring that no sales be closed during the visit. Exceed the day limit or complete a sale on site, and the protection is gone. Companies that hit the same state for multiple events in a year should track cumulative days.
P.L. 86-272 and Why It Protects Less Than You Think
The main federal limit on state corporate income tax is Public Law 86-272. It bars a state from imposing a net income tax on an out-of-state company whose only in-state activity is soliciting orders for tangible personal property, so long as those orders are approved and fulfilled from outside the state.5Office of the Law Revision Counsel. 15 USC 381 – Imposition of Net Income Tax The statute has been in place since 1959, and it still shields companies whose salespeople travel to drum up orders for physical goods.
The protection is narrower than most business owners assume. It applies only to net income taxes, leaving gross receipts taxes, franchise taxes, sales taxes, and minimum business taxes untouched. It covers only tangible personal property, so sellers of services, digital goods, and licenses get nothing. And “solicitation” is read strictly. A sales representative who fixes a product, collects an overdue account, or runs a training session has stepped outside the safe harbor and taken the immunity with them.
The Internet Problem
In 2021, the Multistate Tax Commission issued revised guidance treating many routine website functions as going beyond mere solicitation, which strips the statute’s immunity.6Multistate Tax Commission. Statement of Information Concerning Practices of Multistate Tax Commission and Supporting States Under Public Law 86-272 A growing number of states have adopted this position formally or in practice.
Activities the MTC now says exceed solicitation include live chat and email-based post-sale support initiated through the site, using cookies to gather data on in-state customers, accepting job applications from in-state residents through the site, and handling warranty processing, returns, or product upgrades online. The guidance draws directly on Wayfair‘s reasoning about virtual contacts, treating a company’s digital footprint as functionally equivalent to a physical one. A business that has relied on P.L. 86-272 for decades may find its website has quietly eliminated that reliance across a dozen states.
States Without a Corporate Income Tax
Six states impose no traditional corporate income tax: Nevada, Ohio, South Dakota, Texas, Washington, and Wyoming. Only two of those, South Dakota and Wyoming, are genuinely tax-free at the business level. The other four use gross receipts-style taxes: Nevada’s commerce tax, Ohio’s commercial activity tax, Texas’s franchise tax, and Washington’s business and occupation tax. Each applies to gross revenue rather than net income, which means unprofitable businesses still owe.
The gross receipts distinction matters for nexus planning because P.L. 86-272 blocks only net income taxes. It offers no protection at all against these alternatives. A company that structures its activities to stay within the P.L. 86-272 safe harbor for income tax purposes can still owe gross receipts tax in these states once it meets their own nexus thresholds.
What You’ll Actually Owe: Apportionment
Nexus is only the first question. The second is how much of your total income the state can tax. No state taxes 100% of a multistate company’s income; each uses an apportionment formula to divide income among the states where the business operates.
The Move to Single Sales Factor
The older model split the calculation across three equally weighted factors: property, payroll, and sales in the state. Most states have moved away from it. The sales factor now carries the heaviest weight in the majority of states, and roughly 30 or more use a single sales factor formula that bases the entire calculation on the share of sales sourced to the state. Companies with concentrated property and payroll but nationwide sales benefit. Companies with the opposite profile pay more.
Market-Based Sourcing vs. Cost of Performance
For services and intangibles, the sourcing rule determines where a sale counts. More than three-quarters of states with corporate income taxes now use market-based sourcing, which assigns the sale to the customer’s location.7Multistate Tax Commission. Review of MTC Model Sales/Receipts Sourcing and Special Industry Rules The remaining states use cost-of-performance rules, which assign it to the location where the work was done. Under cost of performance, a consulting firm’s revenue stays with its home state. Under market-based sourcing, the same revenue moves to the client’s state. The same dollars end up apportioned very differently depending on which rule the state applies.
Throwback Rules
About 22 states have throwback rules. If a company based in State A ships to a customer in State B where it has no nexus, that sale would otherwise fall into a “nowhere” category that no state taxes. A throwback rule pulls those sales back into State A’s apportionment formula, raising the share of income State A gets to tax. The practical result is counterintuitive: establishing nexus in additional states can sometimes reduce total tax liability by preventing throwback in the home state. This dynamic drives real nexus planning decisions for multistate companies.
If You Already Have Unreported Nexus
Businesses that discover they have had nexus in a state for years without filing face a choice: come forward or wait. Waiting is almost always worse. States share data, and economic nexus thresholds tied to reported sales figures make non-filers easier to find than they used to be.
Most states participate in the Multistate Tax Commission’s Voluntary Disclosure Program.8Multistate Tax Commission. Multistate Voluntary Disclosure Program The trade is straightforward. The company registers, files back returns, and pays past-due tax and interest for a defined lookback period. The state waives penalties and gives up its right to reach back further.
Corporate income tax lookback periods under voluntary disclosure typically run three to five years, with three years plus the current incomplete year being the most common structure.9Multistate Tax Commission. Lookback Periods for States Participating in National Nexus Program Outside voluntary disclosure, a state can generally audit as far back as its statute of limitations allows, and for a company that never filed, that clock often never started. Late-filing penalties commonly reach 25% of tax owed, calculated at 5% per month for up to five months, with interest running on top for every year of non-compliance.
Foreign Corporations and Federal Tax Treaties
A foreign corporation with U.S. operations cannot assume that a federal tax treaty with its home country carries over to the states. The IRS notes that some states honor treaty provisions and some do not.10Internal Revenue Service. Tax Treaties Each state has to be checked individually; treaty protection at the federal level does not answer the state question.