Market overview
The global audit services market is worth USD 110 bn in 2026 and is forecast to reach USD 180 bn by 2036, growing at a 5.0% CAGR. United States is the largest country market and Statutory audit is the largest by service segment.
| Scope | Fees charged by accounting firms for statutory and voluntary audits of financial statements and related assurance engagements. |
|---|---|
| Industry | Services and Utilities |
| Value 2025 | USD 105 bn |
| Value 2026 | USD 110 bn |
| Value 2036 | USD 180 bn |
| CAGR 2026-2036 | 5.0% |
| Volume 2026 | 926 thousand audit professionals |
| Volume 2036 | 1,238 thousand audit professionals |
| Average price 2026 | USD 119,000 per audit professional |
| Report price | Starts from USD 1,999 |
| Published | November 2026 |
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Audit Services market size and forecast, 2026-2036
Source: Compare Market Research analysis.
© 2026 Compare Market Research. All rights reserved.
| Year | Market value |
|---|---|
| 2026 | USD 110 bn |
| 2027 | USD 116 bn |
| 2028 | USD 122 bn |
| 2029 | USD 128 bn |
| 2030 | USD 134 bn |
| 2031 | USD 141 bn |
| 2032 | USD 148 bn |
| 2033 | USD 155 bn |
| 2034 | USD 163 bn |
| 2035 | USD 171 bn |
| 2036 | USD 180 bn |
Audit Services market segmentation
By service
Source: Compare Market Research analysis.
© 2026 Compare Market Research. All rights reserved.
| Segment | Share 2026 | Share 2036 | Value 2026 | CAGR 2026-36 |
|---|---|---|---|---|
| Statutory audit | 58.0% | 53.3% | USD 63.9 bn | 4.1% |
| Assurance and sustainability reporting | 14.0% | 21.5% | USD 15.4 bn | 9.6% |
| Internal audit and controls | 14.0% | 13.5% | USD 15.4 bn | 4.6% |
| Other attest services | 14.0% | 11.7% | USD 15.4 bn | 3.1% |
By client
Source: Compare Market Research analysis.
© 2026 Compare Market Research. All rights reserved.
| Segment | Share 2026 | Share 2036 | Value 2026 | CAGR 2026-36 |
|---|---|---|---|---|
| Large listed companies | 48.0% | 46.5% | USD 52.9 bn | 4.7% |
| Private mid-sized companies | 30.0% | 30.5% | USD 33.1 bn | 5.2% |
| Financial institutions | 14.0% | 15.6% | USD 15.4 bn | 6.2% |
| Public sector and non-profit | 8.0% | 7.4% | USD 8.8 bn | 4.2% |
By firm type
| Segment | Share 2026 | Share 2036 | Value 2026 | CAGR 2026-36 |
|---|---|---|---|---|
| Big Four | 62.0% | 59.6% | USD 68.4 bn | 4.6% |
| Next tier | 20.0% | 22.2% | USD 22.1 bn | 6.1% |
| Other firms | 18.0% | 18.2% | USD 19.8 bn | 5.1% |
By audit tier
| Segment | Share 2026 | Share 2036 | Value 2026 | CAGR 2026-36 |
|---|---|---|---|---|
| Statutory financial audit | 52.0% | 50.5% | USD 57.3 bn | 4.7% |
| Voluntary audit | 14.0% | 14.0% | USD 15.4 bn | 5.0% |
| Group and consolidation audit | 34.0% | 35.5% | USD 37.5 bn | 5.5% |
By industry
| Segment | Share 2026 | Share 2036 | Value 2026 | CAGR 2026-36 |
|---|---|---|---|---|
| Banking and insurance | 28.0% | 27.6% | USD 30.9 bn | 4.8% |
| Manufacturing and energy | 26.0% | 25.6% | USD 28.7 bn | 4.8% |
| Retail and consumer | 16.0% | 15.8% | USD 17.6 bn | 4.9% |
| Technology and healthcare | 18.0% | 19.2% | USD 19.8 bn | 5.7% |
| Others | 12.0% | 11.8% | USD 13.2 bn | 4.8% |
Top 25 countries for audit services by revenue
Countries are ranked by revenue earned from sales in the country, not by where the product is made. The ten largest hold 74.0% of 2026 revenue and the 25 countries below together hold 94.8%.
Source: Compare Market Research analysis.
© 2026 Compare Market Research. All rights reserved.
| # | Country | Value 2026 | Share 2026 | Value 2036 | CAGR 2026-36 |
|---|---|---|---|---|---|
| 1 | United States | USD 37.5 bn | 34.0% | USD 59.8 bn | 4.8% |
| 2 | China | USD 9.9 bn | 9.0% | USD 17.4 bn | 5.8% |
| 3 | United Kingdom | USD 7.7 bn | 7.0% | USD 12.4 bn | 4.8% |
| 4 | Germany | USD 5.5 bn | 5.0% | USD 8.4 bn | 4.3% |
| 5 | Japan | USD 5.5 bn | 5.0% | USD 7.9 bn | 3.7% |
| 6 | France | USD 4.4 bn | 4.0% | USD 6.6 bn | 4.2% |
| 7 | Canada | USD 3.3 bn | 3.0% | USD 5.2 bn | 4.6% |
| 8 | India | USD 2.8 bn | 2.5% | USD 6.1 bn | 8.3% |
| 9 | Australia | USD 2.8 bn | 2.5% | USD 4.3 bn | 4.6% |
| 10 | Italy | USD 2.2 bn | 2.0% | USD 3.4 bn | 4.5% |
| 11 | Netherlands | USD 2.1 bn | 1.9% | USD 3.4 bn | 4.8% |
| 12 | Switzerland | USD 2.1 bn | 1.9% | USD 3.4 bn | 4.8% |
| 13 | Spain | USD 2.1 bn | 1.9% | USD 3.4 bn | 4.8% |
| 14 | Sweden | USD 2.1 bn | 1.9% | USD 3.4 bn | 4.8% |
| 15 | Belgium | USD 2.1 bn | 1.9% | USD 3.4 bn | 4.8% |
| 16 | Ireland | USD 2.1 bn | 1.9% | USD 3.5 bn | 5.0% |
| 17 | Singapore | USD 2.1 bn | 1.9% | USD 3.5 bn | 5.3% |
| 18 | Hong Kong | USD 1.7 bn | 1.6% | USD 3.1 bn | 5.9% |
| 19 | Mexico | USD 1.4 bn | 1.3% | USD 2.8 bn | 6.9% |
| 20 | Poland | USD 1.2 bn | 1.1% | USD 2.4 bn | 6.8% |
| 21 | United Arab Emirates | USD 1.0 bn | 0.9% | USD 2.0 bn | 6.9% |
| 22 | Austria | USD 849 mn | 0.8% | USD 1.4 bn | 5.1% |
| 23 | Denmark | USD 706 mn | 0.6% | USD 1.2 bn | 5.2% |
| 24 | Norway | USD 595 mn | 0.5% | USD 988 mn | 5.2% |
| 25 | Israel | USD 496 mn | 0.5% | USD 970 mn | 6.9% |
| Rest of world | USD 5.7 bn | 5.2% | USD 9.1 bn | 4.8% |
Source: Compare Market Research analysis.
© 2026 Compare Market Research. All rights reserved.
Competitive landscape
Group 1: Global leaders
- Deloitte
- PwC
- EY
- KPMG
- BDO
- Grant Thornton
Group 2: Regional and specialist players
- RSM
- Forvis Mazars
- Baker Tilly
- Crowe
- Moore Global
- PKF International
- MNP
- Cherry Bekaert
- Plante Moran
Group 3: Emerging and niche players
- Azets
- Nexia
- HLB International
- Kreston Global
- UHY International
- Russell Bedford
- PrimeGlobal
Research methodology
Every figure on this page comes from the research framework that we apply to all of the markets we cover. The 2025 base for the audit services market is built from the volume sold and the price that buyers pay, and is cross-checked against the size of the wider industry the market belongs to. Where a market can be sized in more than one way, the routes are compared before a figure is set.
The forecast runs year by year from the 2025 base to 2036. Growth in each year reflects demand from the industries that buy the product, adoption of new technology, pricing, regulation and replacement cycles. Volume and price are modelled together, so revenue in each year equals volume multiplied by average price. The 2026 to 2036 compound annual growth rate of 5.0% is calculated from the resulting values.
The market is divided by service, by client, by firm type, by audit tier, by industry. The 25 largest countries are ranked by revenue earned from sales to buyers in each country, not by where the product is made. Segment values and country values add up to the market total in every year, and every report is checked for consistency before it is published.
Companies are placed in three groups: global leaders, regional and specialist players, and emerging and niche players. The groups describe how companies compete in the market. They are not a ranking and they are not market shares.
Our analysts also carry out primary research. Customized reports add interviews with key opinion leaders, such as senior executives, technical specialists and buyers, to test the assumptions behind the numbers for the question being asked.
Frequently asked questions
How big is the audit services market?
The global audit services market is estimated at USD 105 bn in 2025 and USD 110 bn in 2026.
How fast will the audit services market grow?
It is forecast to reach USD 180 bn by 2036, a compound annual growth rate of 5.0% from 2026, an increase of USD 69.3 bn.
Which country is the largest market for audit services?
United States is the largest market by revenue at USD 37.5 bn in 2026, 34.0% of the global total. The three largest countries together hold 50.0%.
Which country is growing fastest?
Among the ten largest markets, India is growing fastest at 8.3% a year from 2026 to 2036.
Which audit services segment is largest?
In the by service split, Statutory audit is the largest segment with 58.0% of 2026 revenue.
Who are the leading audit services companies?
Global leaders include Deloitte, PwC, EY, KPMG.
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