There are numerous ways to cover the cost of Epping drug addiction treatment. One payment method you may come across is a sliding fee scale (fee is based on income and other aspects). This indicates that the rehab adjusts their fees based on the client?s income, yearly taxes and other economic components; in the end, the expense that one client pays may not be the same as another. There are a number of reasons why a drug rehab would choose to provide a sliding fee scale to their clients. They may choose to help out an addict who would normally not be able to receive treatment. Another reason for supplying this payment option is that it provides the treatment facility with a tax deduction on the benefit of donating their services as charity.