How much of the economy is small business? — How much of the economy is small business?

What counts as a “small business” and why the definition matters

The U.S. Small Business Administration defines “small business” with industry-specific employee or revenue thresholds set in NAICS terms, and that definition is the baseline for most federal summaries.

These SBA size standards vary by industry and by the measure used, so the same firm can be small in one sector and not in another; readers should expect headline shares to depend on that threshold, not on a single universal cutoff. SBA Office of Advocacy small-business profiles

How economists and agencies measure “share of the economy”

Firm counts, employment, and value added explained

There are three common measures people use when they ask how much of the economy is small business: the number of establishments, the share of private-sector employment they account for, and their share of GDP or value added. Each measure answers a different question about the role of small firms. See recent posts on this topic on the news page.

Data sources: SUSB, ABS, BEA, BLS

Primary federal data sources underlie these measures: Census microdata such as the Statistics of U.S. Businesses and the Annual Business Survey provide firm and employment counts, BEA provides GDP and industry value added, and BLS publications like Business Employment Dynamics shed light on turnover and sectoral shifts. Statistics of U.S. Businesses methodology and data

How much of U.S. employment is in small businesses?

Federal headline estimates

Federal summaries that use the SBA definition commonly place small businesses near the high-40s percent of private-sector employment, a range often reported around 45 to 48 percent in recent federal summaries. SBA Office of Advocacy small-business profiles

What drives the employment share

Underlying SUSB microdata and the Annual Business Survey are the sources used to produce firm-size employment totals and breakdowns; nonemployer firms are counted separately and can change the picture when included. Annual Business Survey and Nonemployer Statistics

Sector mix matters: services tend to have higher small-firm employment shares while manufacturing often shows lower small-firm shares, and local industry composition can shift a state’s or county’s employment share compared with the national rate. Business Employment Dynamics information

How much of U.S. GDP do small businesses produce?

Estimating small firms’ share of GDP uses Census firm-size microdata aligned with BEA industry accounts to allocate value added to size classes; this requires combining datasets and working with industry decomposition methods. BEA GDP by industry

SBA analyses that combine Census and BEA data commonly report small businesses’ share of private-sector value added in the low-40s percent range, lower than employment but still substantial. SBA Office of Advocacy small-business profiles

One reason the GDP share can be lower than the employment share is capital intensity: larger firms often account for a larger share of capital and high-value activities in some sectors, so a given share of employment does not translate one-to-one into a share of value added. BEA GDP by industry See BEA’s 2025 release for recent industry estimates: BEA 2025 GDP release.

Sector differences and recent trends that change the picture

Small-firm employment shares differ by sector: services typically show higher small‑firm employment, while manufacturing shows lower small‑firm employment, which changes national aggregates as the economy shifts toward services. Business Employment Dynamics methodology

Since the 2010s, structural shifts such as manufacturing contraction and services growth have altered the mix of employment and value added, so a stable national headline can mask important sectoral changes. BEA GDP by industry

Key methodological caveats and common measurement pitfalls

Definition sensitivity is fundamental: different SBA size thresholds by NAICS mean that changing the cutoff changes counts and shares; readers should ask what size standard a given statistic uses. SBA Office of Advocacy small-business profiles

Data-timing issues also matter: SUSB and ABS microdata often lag the most recent year, and BEA decompositions are not always reconciled annually to Census firm counts, so vintages must be checked. Statistics of U.S. Businesses methodology and data

Common reporting mistakes include conflating establishment counts with employment shares and treating a single national percentage as representative for every local area; always look for the measure and year cited. Annual Business Survey and Nonemployer Statistics

How to read and use these figures as a voter or local resident

When you see a headline percentage, check four things: who produced the number, whether it is employment or GDP, the year of the data, and which definition of small business was used. SBA Office of Advocacy small-business profiles See the author’s about page for more context.

State and local shares can differ substantially from national averages because of local industry structure; for example, tourism- and service-heavy regions often show higher small‑firm employment shares than manufacturing hubs. Statistics of U.S. Businesses methodology and data

State and local examples: how the national share can look different in Florida

To find state-level figures use the SBA state profiles and SUSB microdata to get employment by size class and compare the small-firm share to state private-sector totals. SBA Office of Advocacy small-business profiles See the 2025 State Profile: United States 2025 State Profile (PDF).

Florida’s local industry mix, including tourism, construction and services, can raise the share of employment in small firms relative to national averages, so local checks are important. Statistics of U.S. Businesses methodology and data

Nonemployer firms, sole proprietors and pass-throughs: what they change

Nonemployer firms are businesses without paid employees; Census Nonemployer Statistics and the Annual Business Survey capture them separately from employer firms and can substantially increase firm counts when included. Annual Business Survey and Nonemployer Statistics

Including or excluding pass-through income and nonemployer firms alters counts and value-added estimates, so always verify whether published shares include these types of firms. Statistics of U.S. Businesses methodology and data

International context: how other countries compare

OECD analysis finds that small and medium enterprises dominate employment in most countries while their GDP shares vary, which highlights the role of definitional and measurement differences in cross-country comparisons. OECD SME Outlook 2023

Because national statistics and size cutoffs differ, avoid one-number international comparisons without checking definitions and methods used by the other country. OECD SME Outlook 2023

A short worked example: estimating small-business share of state employment

Step 1: download SUSB state employment by size class for the year you want and note the SBA size standard applied for each NAICS sector. Statistics of U.S. Businesses methodology and data

Step 2: take the SUSB employment total for firms below the SBA threshold and divide by the state’s BEA private-sector employment total for the same year to get a simple small-business employment share; check for year alignment and industry allocation caveats. BEA GDP by industry

Typical mistakes reporters and readers make when citing small-business statistics

Avoid mixing employment and GDP shares and always name the data source and year; failure to do so produces misleading headlines. Annual Business Survey and Nonemployer Statistics

Also avoid using out-of-date microdata without noting the vintage; SUSB and ABS releases often cover years up to 2022 or 2023 and may lag current conditions. Statistics of U.S. Businesses methodology and data

Conclusion: what a reasonable answer looks like and next sources to check

Federal summaries that apply the SBA definition place small businesses near the high-40s percent of private-sector employment and a lower but still substantial share of private-sector value added commonly reported in the low-40s percent range, with standard caveats about definitions and timing. SBA Office of Advocacy small-business profiles

Primary sources to consult for verification are SBA state and national profiles, SUSB microdata, the Annual Business Survey, BEA industry accounts, BLS Business Employment Dynamics, and OECD outlooks for international context. BEA GDP by industry Or visit Michael Carbonara’s homepage.