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審計人員之產業專精與客戶租稅規避：中國實證研究
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Table 5 reports the descriptive statistics of auditor industry expertise based on industry
portfolio share (
IPS
).
IPS
can reflect the key industries in audit firms’ business portfolio.
Table 5 reports the top 10 audit firms’ specialist industry with highest portfolio share.
Auditor industry expertise based on
IPS
in Table 5 is basically consistent with
IMS
in Table
4. For example, the key industry in DDT’s business portfolio is construction (E) and the key
industry in RSM’s business portfolio is Metals & Non-metals (C6), which is almost the same
as that measured by
IMS
. However, compared to auditor industry expertise based on
IMS
,
audit firms’ specialist industry is not that stable. For example, the specialist industry of PwC
was Mining (B) before 2011 based on
IPS
, but it changed to IT (G) in 2012. The specialist
industry of local Chinese audit firms based on portfolio share has also been frequently
changed in 2008-2012. This may be due to the intense competition in the Chinese audit
market, which is not conducive to develop local Chinese audit firms’ industry expertise.
Table 5 Auditor Industry Expertise Based on Portfolio Share
Audit
Firm
2008
2009
2010
2011
2012
Specialist
Industry
Portfolio
Share
Specialist
Industry
Portfolio
Share
Specialist
Industry
Portfolio
Share
Specialist
Industry
Portfolio
Share
Specialist
Industry
Portfolio
Share
PwC
B 50.36% B 40.26% B 45.79% B 45.65% G 14.95%
DDT
E 44.91% E 50.63% E 45.17% E 45.46% C7 34.60%
RSM
10
C6 44.91% C6 32.04% C6 31.03% C6 20.82% C7 22.54%
Kunitomi
Hiroka
C4 10.96% C6 36.15% C6 36.47% C6 14.11% E 31.30%
Ernst &
Young
C6 31.40% E 22.75% C7 14.19% E 20.27% E 35.69%
Lixin
C6 29.48% C6 26.51% C6 22.69% C6 21.51% H 20.11%
KPMG B 68.45% B 67.66% B 76.14% B 74.12% B 84.78%
Daxin
C4 21.87% E 17.96% C4 19.10% C4 16.10% J 15.20%
Pan-
China
C6 21.94% H 29.13% H 22.46% H 19.94% C7 23.04%
Shine-
Wing
B 20.51% C6 20.90% G 22.46% C7 18.74% G 11.85%
Dahua
C0 10.52% C6 32.32% K 57.05% H 48.81% E 32.21%
Note: only reports the highest
IPS
of top 10 audit firms based on CICPA’s top 100 audit firms list in
2013.
10 RSM merged with Kunitomi Hiroka in 2013, and renamed Ruihua accounting firm, the combined revenue
in 2012 is ranked third in CICPA’s top 100 list.