There are many ways to cover the expense of Central drug addiction treatment. One payment method you may find is a sliding fee scale (fee is based on income and other components). This implies that the rehab adjusts their fees based on the client?s income, yearly taxes and other financial factors; in the end, the cost that a single individual pays may not be the same as another. There are several reasons why a drug rehab would choose to present a sliding fee scale to their clients. They may select to help out an addict who would often not be able to acquire treatment. Another reason for supplying this payment possibility is that it offers the treatment facility with a tax deduction on the benefit of donating their services as charity.