regressive

Tending to return or revert to a previous state.

Characterized by regression or a tendency to regress.

Relating to or being a tax that amounts to a higher percentage of income as income decreases or that places a proportionately higher burden on lower-income taxpayers.

Of or relating to geological regression.

Passing back; returning: opposed to progressive.

Passing back; returning.

Characterized by retrogression; retrogressive.

See Katabolism

That tends to return, revert or regress.

Whose rate decreases as the amount increases.