There are many ways to cover the cost of King drug addiction treatment. One payment method you may discover is a sliding fee scale (fee is based on income and other variables). This means that the rehab adjusts their fees based on the client?s income, yearly taxes and other monetary factors; in the end, the price that one individual pays might not be the same as another. There are a number of reasons why a drug rehab would select to offer a sliding fee scale to their clients. They may select to help out an addict who would in any other case not be able to obtain treatment. Another reason for providing this payment option is that it offers the treatment facility with a tax deduction on the benefit of donating their services as charity.