

21
臺大管理論叢
第
28
卷第
1
期
cash equivalents in current year divided by beginning of the year total assets.
INTAN
are the
intangible assets in current year divided by beginning of the year total assets.
RD
is the total
research and development expense divided by beginning of the year total assets.
PPE
is the
ratio of property, plant, and equipment to total assets.
ADV
is the advertising expense in year t
divided by net sale in year t; when missing, reset to 0.
SGA
is selling, general, and
administrative expense in year t divided by net sales in year t; missing values of SGandA are
set to 0.
NUM_INVESTEE
is the number of the investees of the firm.
NUM_TAX_HAVEN
is
the number of subsidiaries in tax haven countries, based on the list of tax haven countries as
in Durnev et al. (2017) and in Dyreng and Lindsey (2009).
Table 2 presents Pearson and Spearman correlations for our sample of firm-year
observations. Our measure of layers is negatively correlated with our tax avoidance
measures. Specifically,
LAYER
is negatively and significantly correlated with
GAAP_ETR
and
CASH_ETR
. In addition, we note that the four measures of tax avoidance are
significantly correlated. Furthermore,
GAAP_ETR
is negatively correlated with
SIZE
,
MB
,
LEV
,
ROA
,
RD
, and
PPE
, and positively correlated with
SGA
. The control variables are
also correlated with other measures of tax avoidance.