There are quite a few ways to cover the cost of Windber drug addiction treatment. One payment method you may come across is a sliding fee scale (fee is based on income and other variables). This means that the rehab adjusts their costs based on the client?s earnings, yearly taxes and other financial factors; in the end, the expense that one client pays might not be the same as another. There are various reasons why a drug rehab would select to present a sliding fee scale to their clients. They may pick to help out an addict who would often not be able to acquire treatment. Another reason for providing this payment possibility is that it provides the treatment facility with a tax deduction on the benefit of donating their services as charity.