Abstract
We extend prior research by examining the weight applied to earnings generated by changes in ETRs (i.e., the tax component of earnings) in determining CEO and CFO compensation. We examine both bonus and total compensation and find that the predicted relationships between compensation and the tax component of earnings are largely limited to bonus compensation. This is not surprising since bonus compensation represents an unambiguous link between contemporaneous performance and compensation, while equity compensation is in part determined by agency considerations. Our evidence suggests that both CEOs and CFOs are compensated for the tax component of earnings. We find that CEOs are rewarded equally for the tax component of earnings relative to other components of earnings, while CFOs are rewarded more for the tax component of earnings relative to other components of earnings. Additionally, the weight applied to the tax component of earnings when determining CFO bonus compensation is greater when; (1) the tax component of earnings does not appear to be related to earnings management; (2) ETRs decrease rather than increase, (3) the firm pays bonus based on after-tax earnings rather than pre-tax earnings, and (4) the firm is tax aggressive rather than non-tax aggressive. The variations in the weighting of the tax component of earnings for CFO bonus compensation noted above in combination with evidence that CEO bonus compensation is indifferent to ETR-related earnings versus other components of earnings, suggests that the tax component of earnings is a contractual component of CFO bonus compensation.
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Notes
Specifically, Hollingsworth (2002) reports that 86 percent of the corporate tax department executives who responded to her 2001 survey cite tax savings as an important metric in their performance evaluation and 56 percent specifically note the use of ETRs as a performance benchmark. More importantly, Hollingsworth reports that 60 percent of these executives state that these measures are used in determining their compensation.
The tax component of earnings is measured as the pretax return on assets times the change in the effective tax rate.
In addition to the change in ETR measure mentioned above, we also estimate two additional changes in ETR measures to calculate TAX_COMP. The first is based on the method of Abarbanell and Bushee (1997). Their measure calculates the change in ETR as the prior three-year average ETR less the current year ETR. The second is a change in cash ETR measure consistent with Dyreng et al. (2008). Specifically, we measure the change in the cash ETR as the prior 5-year cash ETR less the current cash ETR. Our results (not reported) are robust to the calculations of TAX_COMP using the Abarbanell and Bushee (1997) method. We discuss the empirical results using the cash ETR in the sensitivity analysis section.
In additional testing (not reported), we replicate the work of Schmidt (2006) with our sample.
We use two additional procedures to test the influence of earnings management. First, Schmidt (2006) suggests the initial tax component of earnings (i.e., based on the first quarter ETR) is more persistent for future earnings than is the revised tax component of earnings (i.e., based on the end of year ETR). In supplemental testing (not tabulated), we re-estimate Eq. (2) using first quarter ETR as the measure of the expected ETR. Our conclusions are robust to this alternative specification. Second, Dhaliwal et al. (2004) report that firms’ lower their fourth-quarter ETRs when they would otherwise miss their consensus earnings forecast absent tax expense manipulation. Thus, rather than using prior year’s ROA as the benchmark, we re-estimate our tests based on whether the 4th quarter tax component of earnings is greater than the analysts’ earnings forecast error. Our conclusions are robust to this alternative specification. We do not use this as our primary test as we lose over half of our sample observations when we include analysts’ forecasts in our data set.
Gaertner (2014) validates this model by choosing a random sample of fifty firms. The model has an accuracy rate of 94 % in predicting before or after-tax compensation of the executive.
We use the CFOANN and job title fields in ExecuComp to identify CFOs. Any executive not identified in the CFOANN field that has a job title including the terms CFO or “chief financial” is coded as a CFO.
The exceptions are ∆ADJ_ROA*PERS which is insignificant for CEO total compensation, PSI which is insignificant for CFO bonus compensation and CEO total compensation, and NSI which is insignificant for CFO total compensation.
We employ two separate measures of discretionary accruals (PADCA and REDCA) that control for firm performance based on the work of Ashbaugh et al. (2003). The first measure of discretionary accruals, PADCA, controls for firm performance through a portfolio technique. The second measure of discretionary accruals, REDCA, adjusts for firm performance by including lagged return on assets in the regression model used to estimate non-discretionary accruals. The specific procedures for estimating both measures are discussed in Ashbaugh et al. (2003, 621–622).
The only exception is DTAX in the bonus compensation model where we find HTAX_COMP is significantly greater than LTAX_COMP (two-tailed p value <0.10).
If minority interest (#49), current foreign tax expense (#64), income from unconsolidated entities (#55), or current state tax expense (#173) is missing on Compustat, then we set MI, CFOR, UNCON, or CSTE, respectively, to zero. If current federal tax expense (#63) is missing on Compustat, then we set the value of CFTE to: total tax expense (#16) less current foreign tax expense (#64) less current state tax expense (#173) less deferred tax expense (#50). If goodwill and other intangibles (#33) is missing on Compustat, then we set the value for INTANG to 0. If #33 = C, then we set the value of INTANG to that for goodwill (#204).
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Appendices
Appendix 1
See Table 8.
Appendix 2: tax-aggressiveness measures
To identify firms that have a propensity to engage in tax-aggressive behavior, we utilize three different proxies for tax aggressiveness. We discuss each of our measures below.
2.1 Permanent book-tax differences (PBTD)
Our first proxy is permanent book-tax differences (PBTD). PBTD measures aggressive tax reporting by focusing on permanent book-tax differences. Temporary book-tax differences frequently reflect book-tax differences that result from true differences in tax and financial reporting rules, rather than from actual tax planning (e.g., depreciation differences). Temporary book-tax differences may also reflect earnings management activity through the use of accruals, which is unrelated to tax planning. By removing these temporary differences PBTD produces a more accurate measure of true tax aggressiveness. We calculate PBTD as total book-tax differences less deferred tax expense grossed-up by the applicable federal statutory tax rate (Rego and Wilson 2008).
2.2 Discretionary permanent book-tax differences (DTAX)
Our second proxy for tax reporting aggressiveness is a measure of discretionary permanent book-tax differences (DTAX). Similar to PBTD, DTAX measures tax aggressiveness by focusing on permanent book-tax differences. DTAX improves upon the PBTD measure by including only discretionary permanent book-tax differences to measure tax aggressiveness. We calculate DTAX based on the work of Frank et al. (2009) who regress permanent book-tax differences on nondiscretionary items unrelated to tax planning that are known to cause permanent differences (see Eq. 8 below). We use the residuals (ε it ) from this equation as our estimate of discretionary permanent differences:
where PERMDIFFi = total book-tax differences less temporary book-tax differences for firm i in year t, {BI it − [(CFTE it _CFOR it )/STR it ]} − (DTE it /STR it ); BI it = pre-tax book income (#170) for firm i in year t; CFTE it = current federal tax expense (#63) for firm i in year t; CFOR it = current foreign tax expense (#64) for firm i in year t; DTE it = deferred tax expense (#50) for firm i in year t; STR t = statutory tax rate in year t; INTANG it = goodwill and other intangibles (#33) for firm i in year t; UNCON it = income (loss) reported under the equity method (#55) for firm i in year t; MI it = income (loss) attributable to minority interest (#49) for firm i in year t; CSTE it = current state income tax expense (#173) for firm i in year t; ∆NOL it = change in net operating loss carryforwards (#52) for firm i in year t; LAGPERM it = one-year lagged PERMDIFF for firm i in year t; and ε it = discretionary permanent difference (DTAX it ) for firm i in year t.Footnote 11
All variables above are as defined in Frank et al. (2009).
2.3 Predicted tax shelter firms (SHELTER)
Our final measure of tax aggressiveness is SHELTER, a measure which identifies likely tax shelter participants. Wilson (2009) developed the predictive model using a sample of identified tax shelter participants. We use SHELTER to predict which of our sample firms are currently engaged in tax shelter activity (see Eq. 9). A firm’s tax shelter score (SCORE) is obtained by inserting firm specific variables into the model and using the estimated coefficients from Table 5 in Frank et al. (2009) as follows:
All variables are as defined in Wilson (2009). SIZE is the log of total assets (data 6). LEV is long-term debt (data 9) divided by total assets. ROA is pre-tax earnings (data 170) divided by total assets. FOR_INCOME is (data 273) divided by lagged total assets. R&D is (data 46) divided by lagged total assets. BTD is book income less taxable income scaled by lagged total assets. Book income is pre-tax income (data 170). Taxable income is calculated by grossing up the sum of the current federal tax expense (data 63) and the current foreign tax expense (data 64) and subtracting the change in NOL Carryforward (data 52). If the current federal tax expense is missing, then total current tax expense is calculated by subtracting deferred taxes (data 50), state income taxes (data 173) and other income taxes (data 211) from total income taxes (data 16). The predicted probability of tax sheltering is then calculated as follows:
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Hansen, V., Lopez, T.J. & Reitenga, A. The executive compensation implications of the tax component of earnings. Rev Quant Finan Acc 48, 557–595 (2017). https://doi.org/10.1007/s11156-016-0561-5
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DOI: https://doi.org/10.1007/s11156-016-0561-5