KPMG LLP recorded the highest net gain among all auditors in Q1 2026 with 17 new engagements and 8 departures for a net of +9. CBIZ CPAs PC and Carr Riggs & Ingram (CRI) LLC each recorded a net gain of 7 clients. Across all auditors, 173 new engagements and 182 departures were filed during the quarter.
+9 KPMG LLP: Net Client Gains, Q1 2026.
$33.97B PricewaterhouseCoopers LLP: Net Market Cap Gained.
+10 Big Four Collective Net Client Gains, Q1 2026.
Among the Big Four, KPMG LLP recorded 17 engagements and 8 departures for a net of +9. Deloitte & Touche LLP recorded 15 engagements and 11 departures for a net of +4. PricewaterhouseCoopers LLP recorded 9 engagements and 7 departures for a net of +2. Ernst & Young LLP recorded 6 engagements and 11 departures for a net of -5. The Big Four collectively recorded 47 new engagements and 37 departures. Of the 47 Big Four engagements, 55% came from other Big Four firms and 30% came from global and national firms. Of the 37 Big Four departures, 73% went to other Big Four firms and 22% went to global and national firms.
Among global and national firms, CBIZ CPAs PC recorded 9 engagements and 2 departures for a net of +7. Forvis Mazars LLP recorded 3 engagements and 2 departures for a net of +1. RSM US LLP recorded 3 engagements and 3 departures. BDO USA PC recorded 4 engagements and 5 departures for a net of -1. Grant Thornton LLP recorded 6 engagements and 8 departures for a net of -2. Baker Tilly Advisory Group LP recorded no new engagements and 4 departures in Q1 2026.
Top Net Auditor Engagements - Q1 2026
| Auditor | Gains | Losses | Net |
|---|---|---|---|
| KPMG LLP | 17 | 8 | 9 |
| CBIZ CPAs PC | 9 | 2 | 7 |
| Carr Riggs & Ingram (CRI) LLC | 7 | - | 7 |
| Assentsure PAC | 8 | 4 | 4 |
| Deloitte & Touche LLP | 15 | 11 | 4 |
Amounts shown in millions USD
Source: Ideagen Audit Analytics
Big Four Net Auditor Engagements - Q1 2026
| Auditor | Gains | Losses | Net |
|---|---|---|---|
| KPMG LLP | 17 | 8 | 9 |
| Deloitte & Touche LLP | 15 | 11 | 4 |
| PricewaterhouseCoopers LLP | 9 | 7 | 2 |
| Ernst & Young LLP | 6 | 11 | (5) |
Amounts shown in millions USD
Source: Ideagen Audit Analytics
Auditor Change Matrix
Public company audit client gains and losses | January 1 – March 31, 2026
Market Cap and Audit Fee Gains
PricewaterhouseCoopers LLP recorded the largest net market capitalization gain at $33.97 billion in Q1 2026, adding $42.7 billion and losing $8.8 billion. KPMG LLP was second at $27.06 billion. Grant Thornton LLP recorded the largest net market capitalization loss at -$31.3 billion.
KPMG LLP recorded the highest net audit fees gained at $20.3 million. Deloitte & Touche LLP was second at $6.2 million, followed by RSM US LLP at $4.9 million, CBIZ CPAs PC at $1.2 million, and Carr Riggs & Ingram (CRI) LLC at $728,000.
Top 5 Net Market Cap Gains - Q1 2026
| Auditor | Net Market Cap Gained |
|---|---|
| PricewaterhouseCoopers LLP | $33.97 |
| KPMG LLP | $27.06 |
| GGF CPA LTD | $1.52 |
| CBIZ CPAs PC | $0.80 |
| HoganTaylor LLP | $0.59 |
Amounts shown in billions USD
Source: Ideagen Audit Analytics,
Top 5 Net Audit Fees Gained - Q1 2026
| Auditor | Net Market Cap Gained |
|---|---|
| KPMG LLP | $20.3 |
| Deloitte & Touche LLP | $6.9 |
| RSM US LLP | $4.9 |
| CBIZ CPAs PC | $1.2 |
| Carr Riggs & Ingram (CRI) | $0.7 |
Amounts shown in billions USD
Source: Ideagen Audit Analytics,
Of the 61 departures from named firms in Q1 2026, 60 were client-initiated dismissals and 1 was an auditor resignation. Of the 121 departures from regional and local firms, 97 were dismissals and 24 were resignations. In aggregate, 157 of 182 Q1 2026 departures (86%) were client-initiated.
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