Sliding scale fees are a type of tax or cost that may change based on ... You'll have to take all costs associated with the service you provide into consideration and adjust the scale from there.

Key points. Sliding scale fees are negotiated between therapists and clients who can’t afford the full cost of service. Some therapists offer limited openings for clients paying on a sliding scale.

Sliding scale fees change depending on an associated factor, such as income. The fees are designed to introduce fairness to the market, particularly for low-income earners.