Premium tanks are single-configuration tanks that are located outside of their nations' tech trees. These include tanks that are purchased with gold in-game, tanks purchased in the gift shop, or tanks that are gifted/given for special events. All premium tanks come with Elite status and require no module research.
Premium tanks benefit from greater credit income than regular tanks. This credit bonus increases with the tiers, which makes tier VIII premiums the most profitable tanks available to all players in the game. Many players regularly play tier VIII or other premiums to earn the credits necessary to pay for new tanks, modules, equipment, et cetera.
Aside from their usefulness as money makers, premium tanks are also good for training crews. Unlike regular tanks, premium tanks can accept crew members trained for other tanks of the same nationality and type without a proficiency penalty. They can also be used to stack x2 experience bonuses. A player can earn a x2 XP bonus in one tank and then transfer the crew to a premium tank and do it again, giving them XP from multiple x2 bonus games. Also, since all premium tanks come with elite status, they also come with accelerated crew training available.
In addition to their universal crew class acceptances, premium tanks will also bestow a 1.5 multiplier to experience earned by crews while in the tank.
Premium tanks earn bonus combat experience (which is undistributed experience tied to the tank, which can either be converted to free experience or fed into the additional crew training mechanic) based on their tier. Tier II premiums will offer 70% of the base combat experience, while tier VIII premiums yield 10%. The bonus decreases linearly with tier.
As with regular elited tanks, premium tanks also accumulate XP when accelerated crew training is turned off. This XP can then be converted to free XP with gold. In this way, premium tanks can be used to hasten or outright skip hard module/tank grinds.
The performance of premium tanks varies greatly from tank to tank, but many (such as the IS-6 or Valentine II) have preferential or some other form of special matchmaking. Generally, most premium tanks fall somewhere between stock and fully upgraded vehicles of their tier. Still, some premium tanks (such as the T34 and Type 64) get standard matchmaking and are expected to perform equally as well as corresponding tanks of their tier.
Premium tanks' gold values are displayed on their respective pages. A premium tank's credit value is equal to its gold value times 200.