Lump-sum tax

A lump-sum tax is a special way of taxation, based on a fixed amount, rather than on the real circumstance of the taxed entity. In this, the entity cannot do anything to change their liability.

In contrast with a per unit tax, lump-sum tax does not increase in size as the output increases.

A lump-sum tax levied per-person is known as a "head-tax" or "poll-tax".