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