Market overview
The global tax advisory market is worth USD 159 bn in 2026 and is forecast to reach USD 290 bn by 2036, growing at a 6.2% CAGR. United States is the largest country market and Compliance and return preparation is the largest by service segment.
| Scope | Fees for tax advisory and tax compliance services, including corporate, indirect, international, transfer pricing and personal tax work, sold by accounting firms and specialist advisers. |
|---|---|
| Industry | Services and Utilities |
| Value 2025 | USD 150 bn |
| Value 2026 | USD 159 bn |
| Value 2036 | USD 290 bn |
| CAGR 2026-2036 | 6.2% |
| Volume 2026 | 61.8 million client engagements |
| Volume 2036 | 83.8 million client engagements |
| Average price 2026 | USD 2,575 per client engagement |
| Report price | Starts from USD 1,999 |
| Published | November 2026 |
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Tax Advisory market size and forecast, 2026-2036
Source: Compare Market Research analysis.
© 2026 Compare Market Research. All rights reserved.
| Year | Market value |
|---|---|
| 2026 | USD 159 bn |
| 2027 | USD 169 bn |
| 2028 | USD 179 bn |
| 2029 | USD 190 bn |
| 2030 | USD 202 bn |
| 2031 | USD 215 bn |
| 2032 | USD 228 bn |
| 2033 | USD 242 bn |
| 2034 | USD 257 bn |
| 2035 | USD 273 bn |
| 2036 | USD 290 bn |
Tax Advisory 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 |
|---|---|---|---|---|
| Compliance and return preparation | 34.0% | 29.4% | USD 54.1 bn | 4.7% |
| Corporate and international tax | 28.0% | 30.7% | USD 44.5 bn | 7.2% |
| Indirect tax (VAT and GST) | 16.0% | 17.5% | USD 25.4 bn | 7.2% |
| Transfer pricing | 10.0% | 11.5% | USD 15.9 bn | 7.7% |
| Personal and private client tax | 12.0% | 10.9% | USD 19.1 bn | 5.2% |
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 corporations | 44.0% | 43.5% | USD 70.0 bn | 6.1% |
| Mid-sized firms | 26.0% | 26.9% | USD 41.3 bn | 6.6% |
| Individuals and small business | 30.0% | 29.6% | USD 47.7 bn | 6.1% |
By provider type
| Segment | Share 2026 | Share 2036 | Value 2026 | CAGR 2026-36 |
|---|---|---|---|---|
| Big Four firms | 42.0% | 37.0% | USD 66.8 bn | 4.9% |
| Mid-tier firms | 26.0% | 27.0% | USD 41.3 bn | 6.6% |
| Boutique and specialist firms | 18.0% | 20.0% | USD 28.6 bn | 7.3% |
| Law firm tax practices | 14.0% | 16.0% | USD 22.3 bn | 7.6% |
By fee model
| Segment | Share 2026 | Share 2036 | Value 2026 | CAGR 2026-36 |
|---|---|---|---|---|
| Hourly | 52.0% | 44.0% | USD 82.7 bn | 4.4% |
| Fixed fee | 32.0% | 33.0% | USD 50.9 bn | 6.5% |
| Value-based | 16.0% | 23.0% | USD 25.4 bn | 10.1% |
By engagement pattern
| Segment | Share 2026 | Share 2036 | Value 2026 | CAGR 2026-36 |
|---|---|---|---|---|
| Recurring annual work | 46.0% | 43.0% | USD 73.1 bn | 5.5% |
| Project-based work | 36.0% | 37.0% | USD 57.2 bn | 6.5% |
| Disputes and controversy | 18.0% | 20.0% | USD 28.6 bn | 7.3% |
Top 25 countries for tax advisory by revenue
Countries are ranked by revenue earned from sales in the country, not by where the product is made. The ten largest hold 76.5% of 2026 revenue and the 25 countries below together hold 93.9%.
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 57.2 bn | 36.0% | USD 101 bn | 5.9% |
| 2 | United Kingdom | USD 11.1 bn | 7.0% | USD 19.7 bn | 5.9% |
| 3 | Germany | USD 9.5 bn | 6.0% | USD 16.2 bn | 5.5% |
| 4 | China | USD 9.5 bn | 6.0% | USD 19.4 bn | 7.4% |
| 5 | France | USD 7.2 bn | 4.5% | USD 12.2 bn | 5.5% |
| 6 | Japan | USD 6.4 bn | 4.0% | USD 9.9 bn | 4.5% |
| 7 | India | USD 6.4 bn | 4.0% | USD 15.7 bn | 9.4% |
| 8 | Canada | USD 5.6 bn | 3.5% | USD 9.9 bn | 5.9% |
| 9 | Australia | USD 4.8 bn | 3.0% | USD 8.4 bn | 5.8% |
| 10 | Netherlands | USD 4.0 bn | 2.5% | USD 7.0 bn | 5.8% |
| 11 | Italy | USD 3.8 bn | 2.4% | USD 7.1 bn | 6.5% |
| 12 | Spain | USD 3.3 bn | 2.1% | USD 6.2 bn | 6.5% |
| 13 | South Korea | USD 2.6 bn | 1.6% | USD 4.9 bn | 6.5% |
| 14 | Switzerland | USD 2.2 bn | 1.4% | USD 4.2 bn | 6.4% |
| 15 | Sweden | USD 2.0 bn | 1.2% | USD 3.7 bn | 6.5% |
| 16 | Brazil | USD 1.8 bn | 1.1% | USD 3.7 bn | 7.5% |
| 17 | Singapore | USD 1.7 bn | 1.0% | USD 3.1 bn | 6.4% |
| 18 | Ireland | USD 1.5 bn | 1.0% | USD 2.8 bn | 6.4% |
| 19 | Belgium | USD 1.4 bn | 0.9% | USD 2.7 bn | 6.4% |
| 20 | Mexico | USD 1.4 bn | 0.8% | USD 2.8 bn | 7.5% |
| 21 | United Arab Emirates | USD 1.3 bn | 0.8% | USD 2.6 bn | 7.4% |
| 22 | Luxembourg | USD 1.2 bn | 0.8% | USD 2.3 bn | 6.5% |
| 23 | Hong Kong | USD 1.2 bn | 0.7% | USD 2.2 bn | 6.5% |
| 24 | Poland | USD 1.1 bn | 0.7% | USD 2.1 bn | 6.5% |
| 25 | Austria | USD 1.1 bn | 0.7% | USD 2.0 bn | 6.5% |
| Rest of world | USD 9.7 bn | 6.1% | USD 18.1 bn | 6.4% |
Source: Compare Market Research analysis.
© 2026 Compare Market Research. All rights reserved.
Competitive landscape
Group 1: Global leaders
- Deloitte
- PwC
- EY
- KPMG
- H&R Block
- Thomson Reuters
- Intuit
- Wolters Kluwer
- Jackson Hewitt
Group 2: Regional and specialist players
- BDO
- Grant Thornton
- RSM
- Baker Tilly
- Mazars
- Crowe
- Andersen
- CBIZ
Group 3: Emerging and niche players
- Avalara
- Vertex
- Taxback
- Taxfix
- Sovos
- ClearTax
- Anrok
- Kintsugi
- TaxBuddy
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 tax advisory 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 6.2% is calculated from the resulting values.
The market is divided by service, by client, by provider type, by fee model, by engagement pattern. 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 tax advisory market?
The global tax advisory market is estimated at USD 150 bn in 2025 and USD 159 bn in 2026.
How fast will the tax advisory market grow?
It is forecast to reach USD 290 bn by 2036, a compound annual growth rate of 6.2% from 2026, an increase of USD 131 bn.
Which country is the largest market for tax advisory?
United States is the largest market by revenue at USD 57.2 bn in 2026, 36.0% of the global total. The three largest countries together hold 49.0%.
Which country is growing fastest?
Among the ten largest markets, India is growing fastest at 9.4% a year from 2026 to 2036.
Which tax advisory segment is largest?
In the by service split, Compliance and return preparation is the largest segment with 34.0% of 2026 revenue.
Who are the leading tax advisory companies?
Global leaders include Deloitte, PwC, EY, KPMG.
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