What AI for Small Business Looks Like Today
AI for small business means using machine learning or generative AI tools in the daily work of firms with fewer than 50 employees. Adoption still trails larger firms. Across OECD countries in 2024, 11.9% of firms with 10 to 49 employees used AI, against 40% of firms with 250 or more.
Mid-sized firms with 50 to 249 employees sat between, at 20.4%. The OECD found the size gap is wider for AI than for cloud computing.
AI for SMB Adoption by Firm Size
US Census Bureau data point the same way. In the two weeks to May 3, 2026, 19.8% of all US businesses used AI, and 37% of firms with 250 or more employees did. Use grew among firms with 20 or more employees but held flat below that size.
The UK shows a similar split. A 2025 government survey of 3,500 firms found 14% of micro firms used AI, against 36% of large firms.
AI in the Small and Medium Business Market
Among UK firms using or planning AI, marketing and administration led at 72% each, followed by IT at 64%. Micro firms leaned most on creative and content work, at 81%.
Small adopters also spread use across more of their staff. At UK micro firms using AI, 38% of staff used it on average, against 20% at large firms. Skills remain a major constraint, cited by 50% of SMEs in four G7 countries.
Sources: OECD, AI Adoption by Small and Medium-Sized Enterprises 2025, UK Department for Science, Innovation and Technology AI Adoption Research 2025, US Census Bureau BTOS 2026
