This Act modernizes federal law to limit state taxation of out-of-state businesses by expanding protections beyond tangible goods to cover digital products and services, and by establishing a minimum physical presence standard for imposing business activity taxes.
Pat Harrigan
Representative
NC-10
The Business Activity Tax Simplification Act of 2026 modernizes federal law to limit state taxation of businesses engaged in interstate commerce. It expands protections beyond tangible goods to cover digital products and services, and establishes a strict physical presence standard for imposing state net income or other business activity taxes. This legislation aims to provide clear, uniform rules for when a state can assert taxing authority over out-of-state companies.
Business Activity Tax Simplification Act Sets Physical Presence Standard for State Taxes Starting 2026
The Business Activity Tax Simplification Act of 2026 fundamentally rewrites the rules for how states can tax companies that don't live within their borders. Under this bill, a state or city generally cannot hit a business with income or 'business activity' taxes unless that company has a physical presence there for at least 15 days in a year. This is a massive update to a 1959 law that was written when 'interstate commerce' meant trucking boxes of soap across state lines; the new version explicitly covers the digital world, protecting companies selling software, cloud computing, and digital data from being taxed by every state where a customer clicks 'download.'
The Digital Handshake
This bill brings tax law into the 21st century by expanding protections to digital goods and services (Section 2). In the past, only physical products were shielded from certain state taxes; now, if you run a small software firm in Austin and sell subscriptions to users in Seattle, Washington can't tax your business income just because your code is being used there. The bill defines a 'digital good' as anything from software to data files, as long as the customer gets a copy to use. It also creates a 'safe harbor' for independent contractors. This means if a freelance salesperson in Ohio pitches your product, their presence alone won't suddenly make your out-of-state company liable for Ohio’s business taxes.
Boots on the Ground Requirements
To make things crystal clear, Section 3 sets a 'physical presence' bar that a business must hit before a state can send a tax bill. You’re only considered 'present' if you have employees there, own or lease property (not including software licenses), or use an exclusive agent to maintain a market. If you’re just sending a consultant into a state for a 10-day project, you’re in the clear, as the bill exempts activities lasting less than 15 days. For a construction firm based in one state that occasionally sends a specialist to consult on a job site across the border, this removes the headache of filing complex tax returns for a few days of work.
The Revenue Tug-of-War
While this is a win for businesses looking to cut down on paperwork and 'gotcha' taxes, it creates a significant challenge for state and local budgets. By strictly requiring physical presence, the bill prevents states from taxing 'economic presence'—the idea that if you make millions of dollars in sales to residents of a state, you should help pay for that state's infrastructure. Because Section 5 applies these rules to almost any tax measured by 'economic results,' states could see a dip in revenue that currently funds local schools or roads. Additionally, Section 4 changes how 'unitary' or group taxes are calculated, ensuring that states can’t artificially inflate a company’s tax bill by counting income from out-of-state affiliates that don't meet the physical presence test.