Country-specific reduced activation ferritic martensitic (RAFM) steels are being developed for fusion reactors by various countries. India has developed reduced activation ferritic martensitic steel, namely India specific reduced activation ferritic martensitic (INRAFM) steel (9Cr-1.4W-0.06Ta). In the present study, systematic investigations were carried out on this steel to identify the heat treatment parameters suitable for thermo-mechanical treatment by warm rolling. Subsequently, based on the identified parameters the steel was subjected to thermo-mechanical treatment at 973K and then air-cooled to room temperature without soaking. This was followed by tempering at 1033K for 90 min. Microstructure, dislocation density, hardness, and tensile properties of the steel were assessed in conventional normalized and tempered condition and thermo-mechanically treated plus tempered condition. The steel exhibits tempered martensitic structure decorated with M23C6 and MX precipitates with no traces of ferrite in thermo-mechanically treated plus tempered condition. Thermo-mechanical treatment has increased the dislocation density by three-fold compared to normalized and tempered condition. However, dislocations density decreased upon tempering due to recovery and annihilation processes. Hardness and tensile properties of the steel were significantly improved after thermo-mechanical treatment (without soaking) followed by tempering compared with the steel in normalized and tempered condition. Resultant microstructure and properties of the present steel were compared with those of a similar RAFM steel (9Cr-1.0W-0.06Ta) processed under identical conditions except that this steel was subjected to soaking for 30 min at thermo-mechanical treatment temperature. The INRAFM steel subjected to thermo-mechanical treatment (without soaking) portrays better tensile properties compared to RAFM steel subjected to thermo-mechanical treatment (with soaking) owing to absence of ferrite and presence of large number of finer M23C6 and MX precipitates in the former steel.