5.1. Benchmark Regression Results
Table 3 presents the regression outcomes for the relationship between property tax expectations and household investment in risky financial assets. In Columns 1 and 2, the dependent variable is “
Risk”, and a logit model is employed to explore the impact of property tax expectations on the likelihood of holding risky financial assets. In Columns 3 and 4, the dependent variable is “
Risk_p,” and a Tobit model is used to explore how property tax expectations affect the investment intensity of risky financial assets.
The regression analysis presented in
Table 3 demonstrates that the average marginal effect and regression coefficient for the primary explanatory variable, “
Tax”, is statistically significant, exceeding 0 at the 1% significance level. This finding suggests that households anticipating the imposition of property taxes are more inclined to partake in risky financial asset investments and maintain a larger proportion of such assets within their portfolios. For example, according to the regression results in Column 2, controlling for other factors, households expecting property taxes to be levied are 3.0% more likely to hold risky financial assets compared to other households. This impact accounts for 21% of the average probability of holding risky financial assets in the sample (14.2%), which has definite economic implications and provides support for Hypothesis 1.
With respect to the other control variables, the regression results show an inverted U-shaped relation between the householder’s age and investment in risky financial assets. A boost in a household’s number of years of education stimulates investment in risky financial assets, whereas a larger household size suppresses participation in such investments. Risk-averse households are inclined to avoid risky financial assets, whereas increased financial literacy inspires households to hold more risky financial assets. Higher income and wealth levels positively affect the holding of risky financial assets. These results are in correspondence with the literature. However, given potential endogeneity issues, this paper does not delve deeply into the explanations of the control variables’ results.
A few control variables yielded unexpected results. Notably, the average marginal effect of the gender variable was negative, contradicting the traditional view that males prefer risks more than females. However, this result aligns with the empirical findings in much of the literature. This inconsistency could stem from the fact that, after controlling for several economic variables, the gender characteristics may have been partially accounted for [
7,
45,
51]. Furthermore, the health variable exhibited significant differences in both significance levels and regression coefficients across different models. These variations may result from the impact of health on household risky financial markets investment being explained by income and wealth factors.
5.2. Robustness Test
To analyze the possible impact of overly broad definitions of risky financial assets on the research conclusions, this paper focuses specifically on the case where risky financial assets are defined solely as stocks and where the core explanatory variables are changed to “Stock” and “Stock_p”. Specifically, this paper replaces the “
Risk” variable in Model (1) and the “
Risk_p” variable in Model (2) with the “Stock” variable and “Stock_p” variable, respectively. The revised models (1) and (2) are then re-run for further analysis. The corresponding results are shown in
Table 4. Wherein “Controls” represents the set of control variables, “Prov” represents the set of provincial characteristic variables, and “Yes” means the variable set is controlled. The terms “Controls”, “Prov”, and “Yes” in the following text also have the same meaning. The (1) and (3) columns report the regression results without the inclusion of control variables and provincial characteristic variables, while the (2) and (4) columns present the regression results after adding all the control variables and provincial characteristic variables used in
Table 3. In
Table 4, the results of regression from each column indicate that the average marginal effect (regression coefficient) and significance level of the “
Tax” variable have not changed significantly compared with the results in the corresponding columns of
Table 3. Thus, Hypothesis 1 remains robust.
In
Table 3, the core explanatory variable was initially defined as “Assign a value of 0 to households that respond ‘No’ and assign a value of 1 to households that respond ‘Within 1 year’, ‘Within 2 to 3 years’, ‘Within 3 to 5 years’ or ‘More than 5 years’.” Given that households that responded with “More than 5 years” may not differ significantly from those that responded “No” in terms of their actual property tax expectations, this paper adjusts the settings of explanatory variables to perform a robustness test. Specifically, the new setting of the “
Tax” variable is “Assign a value of 0 to households responding ‘No’ or ‘More than 5 years’ and a value of 1 to households responding ‘Within 1 year’, ‘Within 2 to 3 years’ or ‘Within 3 to 5 years’.” After that, this paper re-runs Model (1) and Model (2) to conduct the robustness test. The results of this robustness test are presented in
Table 5. Among them, “Controls” and “Prov” carry the same meanings as those in
Table 4. As indicated by the regression results in each model column, although there is a slight decrease in the value and significance of the coefficients after the adjustment of explanatory variables, the “
Tax” variable still has a notable positive effect on the probability and proportion of households holding risky financial assets. The reduction in coefficients may be because households that respond “More than 5 years” still hold the expectation that property taxes will be levied.
Since Chongqing and Shanghai became pilot cities in 2011, samples from these cities were excluded from the benchmark regression. To test the potential impact of this sample exclusion on the research conclusions, this paper conducts a robustness check by using the full sample of households before exclusion. The corresponding results are presented in columns 1 and 2 of
Table 6. Wherein except for the difference in sample size, the model and variable settings in Columns 1 and 2 are consistent with those in Columns 2 and 4 of
Table 3. The value and significance of the average marginal effect (regression coefficient) of the core explanatory variable “
Tax” do not differ significantly from the results in
Table 3. Therefore, excluding the samples from Chongqing and Shanghai does not affect the robustness of the research conclusions in this paper. The results reported in Columns 3 and 4 of
Table 6 present the subsample analysis after excluding households with non-positive net assets and zero income. Apart from changes in the sample size, the model specifications and variables in Column 3 and Column 4 are consistent with those in Column 2 and Column 4 of
Table 3. The findings indicate that the regression results for the “
Tax” variable do not significantly differ from the corresponding columns in
Table 3, confirming the robustness of the conclusions.
To analyze possible endogeneity issues in benchmark regression, this paper employs an instrumental variable. The relative results are shown in
Table 7, and Columns 1 and 2 use a two-step IV-Probit model, whereas Columns 3 and 4 use a two-step IV-Tobit model. Each model includes all the control variables used in column 2 of
Table 3. The instrumental variable utilized in this paper is the “Tax_c” variable. The rationale for the instrumental variable setting is twofold. First, the average property tax expectations in the city reflect other households’ expectations about the likelihood that property taxes will be levied, which significantly influences the household’s own expectations through social interaction. Second, the average property tax expectations in the city are not directly related to the household’s risky financial asset investment. From the results in
Table 7, after the application of the instrumental variable, the regression coefficient associated with the “
Tax” variable continues to exhibit a statistically significant value exceeding 0 at the 1% significance level, thereby providing empirical support for Hypothesis 1. Additionally, the weak instrument test rejects the possibility of weak instruments.
The potential issue of multicollinearity between the “Age” variable and “Age
2” variable and the potential impact of the “House” variable on the conclusions is discussed. This paper separately excludes the “Age
2” variable and the “House” variable from the control variables to conduct a robustness test. The first and second columns in
Table 8 present the regression results after removing the “Age
2” variable, while the other models and variable settings remain consistent with those in the second and fourth columns of
Table 3. The third and fourth columns report the regression results after excluding the “House” variable, with the other models and variable settings also consistent with the second and fourth columns of
Table 3. The results show that the regression results in each column are not significantly different from the corresponding results in
Table 3, confirming that the conclusion that the “
Tax” variable suppresses household holdings of risky financial assets remains robust.