This study aims to examine the effect of profitability, leverage, and firm size on tax avoidance in property and real estate companies listed on the Indonesia Stock Exchange (IDX) for the period 2020–2024. The research method employed is a quantitative approach using multiple linear regression analysis with SPSS. A sample of 20 companies was selected using purposive sampling from a population of 93 property and real estate companies, yielding 76 observations after outlier elimination. Profitability is measured by Return on Assets (ROA), leverage by Debt to Equity Ratio (DER), firm size by the natural logarithm of total assets, and tax avoidance by the Effective Tax Rate (ETR). The results indicate that: (1) profitability has a significant negative effect on tax avoidance (t = -1.955; sig. 0.044); (2) leverage has a significant positive effect on tax avoidance (t = 2.608; sig. 0.011); (3) firm size has a significant negative effect on tax avoidance (t = -2.897; sig. 0.005); (4) simultaneously, the three variables significantly influence tax avoidance (F = 5.799; sig. 0.001), explaining
48.5% of its variation.