AI in Business
AI Has Reached Main Street: One in Four Businesses Now Uses It
In less than a year, the share of American businesses using artificial intelligence jumped by more than a third. The surprise is who is keeping pace: the very smallest firms.
Not long ago, artificial intelligence in business meant research labs and nine-figure budgets. The latest government data says that era has ended. AI has moved down the org chart and out onto Main Street, and the smallest businesses in America are now using it at almost exactly the same rate as everyone else.
By the numbers
A fast climb in under a year
Every two weeks, the Census Bureau asks businesses whether they used AI in any business function, from virtual agents to voice recognition to tools that write and analyze. In the period from September 7 to 20, 2026, 23.8 percent said yes. When Census began asking the question this way in November 2025, the figure was 17.3 percent.
That is a gain of about six and a half points in ten months, and it has risen almost every reading since. Looking ahead, 27.7 percent of businesses expect to use AI within six months.
A note on comparisons: Census changed the wording of its AI question in late 2025, so earlier readings in the single digits are not directly comparable. Under the old question, use had already climbed from 3.5 percent to about 10 percent.
The smallest firms are not behind
The old assumption was that tiny businesses would lag. The newest numbers do not show it. Firms with one to four employees use AI at 23.9 percent, right at the national average. Firms with 5 to 19 employees sit slightly lower, between 21 and 23 percent.
The largest businesses still lead, with firms of 100 or more employees at about 36 percent. But the gap between a solo operator and a mid-size company has all but closed, and that matters. AI is one of the rare advantages in business that costs a one-person firm roughly what it costs a corporation.
For a one-person business, AI can stand in for the help it cannot yet afford to hire: a first draft of marketing copy, a summary of a long contract, a reply to a routine customer question. That is why adoption at the small end is keeping pace.
Where AI is used most
Adoption is highest in knowledge work. Half of businesses in the information sector use AI, followed by professional and technical services at 42.7 percent, finance and insurance at 40.1 percent, and educational services at 39.9 percent. Real estate sits at about 31 percent.
Hands-on industries are further behind, which also means they have the most room to grow. Construction is at 17.2 percent, retail at 16.8 percent, and accommodation and food services at about 10 percent.
What businesses actually use it for
Census research on how firms use AI found that among businesses using it, sales and marketing is the most common job, at 52 percent. Strategy and business development follows at 45 percent, then information technology at 41 percent and research and development at 40 percent.
Most firms are still early. About 57 percent apply AI to just one to three functions, and nearly a quarter use it for only one. The typical business is not reinventing itself. It is handing over a task or two, watching closely, and expanding from there.
Workers are moving at the same speed. The Federal Reserve found that a quarter of workers used generative AI in their job in a single month in late 2025.
What this means for a small operator
- Start where the data says others start. Marketing and sales tasks are the most common first use for a reason: they are repetitive, measurable, and easy to check.
- Pick one function and do it well. Most businesses using AI apply it narrowly. Depth in one task beats a shallow pass at ten.
- Treat it as an assistant, not an oracle. AI drafts quickly. You still review what goes out with your name on it.
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Sources
- U.S. Census Bureau, Business Trends and Outlook Survey, national, size class and sector data through September 20, 2026
- U.S. Census Bureau, Large Firms With at Least 20 Employees Biggest AI Users
- U.S. Census Bureau, Center for Economic Studies, The Microstructure of AI Diffusion, Working Paper CES 26-25
- Federal Reserve, Economic Well-Being of U.S. Households in 2025
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