The purpose of this study is to examine the effect of tax planning which is moderated by the audit committee on the firm's solvability. In this study, the independent variable is the tax planning and the dependent variable is the firm's solvability. The authors also put the audit committee as moderating variable and the size of the company as a control variable. This study uses MRA (Moderated Regression Analysis). The population of study is all real estate companies and contractors listed in the Indonesia Stock Exchange (BEI) from 2011-2014, whether the sample of this study is taken by "purposive sampling method". Based on the the regression analysis, the results are: (1) the effect of tax planning on solvability is significantly positive; and (2) the interaction between the audit committee applied as moderating into the tax planning has significant impact on solvability. From the results of the regression analysis, it can be concluded that all research hypothesis is accepted. This research results hopefully will give empirical evident and comprehensive understanding to the academicians and public researchers or observers that the audit committee moderates the effect of tax planning on the firm's solvability.

This study aims to test whether tax planning affects firm value (H1), examine whether the audit committee affects firm value (H2), examine whether firm size affects firm value (H3), examine whether firm size moderates the effect of tax planning on firm value (H4), and examines whether firm size moderates the effect of the audit committee on firm value (H5). This study takes financial statement data from contractor and real estate companies listed on the Indonesia Stock Exchange for the period 2018 to 2020. The analysis used to test the hypothesis uses Moderated Regression Analysis (MRA) with the least squares method. The results of the analysis can be concluded that this study can accept and prove all the proposed hypotheses.