According to United States law, it is possible for a private citizen to own a military tank that has been decommissioned. These tanks can often be found at high-end auctions. However, there is a major catch – the tank must be nonfunctional in terms of its cannon. While the motor and treads can still work, you are not allowed to purchase or possess any ammunition for it. This is why most decommissioned tanks are sold in a nonfunctional state. If you want to drive the tank, you will have to repair it yourself. Nevertheless, once the tank is fixed, you are free to drive it as much as you want. Some U.S. states even allow tanks with properly rubberized treads to be driven on public roads, although this is mostly limited to private property.

In theory, a private citizen can own a fully functioning tank with a cannon. However, to legally possess such a tank, you would need to obtain a federally-issued Destructive Device permit. Obtaining this permit is not easy, as it requires various licensure and background checks. Even if you have military training, the use of the cannon is only permitted in specific circumstances. All in all, the distinction between owning a functional or nonfunctional tank is not worth pursuing.

Owning a tank can be an option if you are incredibly wealthy and desire an unusual lawn ornament. However, it comes with a hefty cost and numerous inconveniences.