sliding scale

noun

1. a variable scale, especially of industrial costs, as wages, that may be adapted to changes in demand.
2. a wage scale varying with the selling price of goods produced, the cost of living, or profits.
3. a price scale, as of medical fees, in which prices vary according to the ability of individuals to pay.
4. a tariff scale varying according to changing prices.

sliding scale

noun

1. a variable scale according to which specified wages, tariffs, prices, etc, fluctuate in response to changes in some other factor, standard, or conditions

sliding scale

1. A set of rates that change according to a mathematical formula. The income tax, for example, is levied on a sliding scale, with the rich paying a higher percentage than the poor.

Word History and Origins

Origin of sliding scale¹

First recorded in 1700–10

Example Sentences

At the least, eligibility for VA benefits should reward time of service, using a transparent, sliding scale of benefits that increases based on the length of one’s career.

From Los Angeles Times

It is impossible to say because there is no precedent for anything quite like this, and sanctions can be applied on a sliding scale depending on whether City are found guilty of any charges.

From BBC

Seattle manages a preschool program that provides cost assistance on a sliding scale.

From Seattle Times

Furthermore, they will be adjusted on a sliding scale to meet the needs and experience levels of interested parties.

From Seattle Times

A final rule could determine how qualifying hydrogen projects must calculate their emissions and direct billions of public tax dollars on a sliding scale.

From Seattle Times