Thermax has been penalized with a Rs 1.52 crore customs duty and IGST fine due to the 2020 fire at their Dahej SEZ facility. The company intends to appeal against this penalty, which was issued by Ahmedabad Customs on April 1, 2026.

Thermax Limited incurs a Rs 3.14 crore GST penalty due to misclassification of goods during fiscal years 2019-20 to 2022-23. The company has announced its intention to challenge this order.