This study investigated the effect of tax avoidance (TAV) on company value in Jordan, with a specific focus on the moderating role of leverage. The sample is 55 Jordanian industrial firms listed on the Amman Stock Exchange for the study period from 2005 to 2022. Given the evolving regulatory landscape and the importance of tax planning strategies for corporate performance, understanding these dynamics is critical. Employing panel data analysis spanning several years, the study examined the link between tax avoidance, leverage, and company value. The results indicated a significant negative association between TAV and firm value (the correlation between them is –29.3%), suggesting that firms engaging in higher levels of TAV experience lower market valuations. Additionally, the analysis reveals that leverage plays a crucial moderating role in this relationship, amplifying the negative impact of TAV on firm value. The study also found a strong correlation between firm value and size, and the relationship between firm value and ROA remains significant and positive. These findings provided valuable information for policymakers, corporate executives, and investors navigating the complexities of contemporary business environments in Jordan and beyond.