The T-10A is an improved modification of the seventh variant of the IS heavy tank family. It was a Soviet heavy tank designed as a complementary counterpart to the initial T-10 variant until a more substantial upgrade could be assembled. It was developed in the early 1950s as part of the Soviet Union's efforts to modernize its armoured forces. Compared to the IS-3, it had better armour protection, a more powerful engine, improved firepower, and the T-10A itself added a vertical stabilizer. The layout of the turret was also changed, making it much simpler to reload the ammunition for the main gun. Despite this, the upgrades were deemed insufficient, prompting the development of subsequent iterations, most notably the T-10B and T-10M, which were considered significant improvements over the T-10A and a step in the right direction for the future of the Soviet Army.

Introduced in Update "New Power" as a reward for Battle Pass: Season I, it's the earliest Soviet heavy tank to feature a simple one-plane stabilizer, which makes it much easier to fire on the move and, as a result, is better for more dynamic gameplay. However, it should be noted that the T-10A's armour is not dependable at its battle rating and struggles against high-explosive anti-tank fin-stabilised (HEATFS) and armour-piercing discarding sabot (APDS) rounds. Despite this, the T-10A compensates with its powerful 122 mm D-25TS tank gun, which has a considerably lower reload time than the older 122 mm D-25T tank gun found in previous Soviet IS heavy tank variants.