Webcalculating tips on services. To calculate the tip for your massage, look at the total cost of the service. A standard tip is between 15% and 20%, depending on the. Webunderstanding when and how much to tip for a massage ensures that your expression of gratitude aligns with industry norms and reflects your satisfaction with the. Lets get right down to brass tacks. The generally accepted tip for a massage therapist is 20% of the total massage cost. This aligns with the.