On this page
Quick answer
A 20% tip on a 500 service price is 100. With no tax or rounding, the total is 600; if a 100 deposit is credited to this bill, the remaining balance is 500. The deposit reduces the balance, not the full-service tip basis.
How to use
Enter the known values, check the selected units and assumptions, then calculate. Compare the result with the worked example. Copy, print or export the table when you need a record. Enter the full price of the completed session. A credited deposit reduces today’s balance after the tip is calculated. Choose included tax to extract the pre-tax basis, or added tax to add tax to the bill. Rounding changes the tip, not the service price.
Formula and method
Total tip = Tip basis × % / 100; Balance due today = Total including tip − Credited deposit already paid
Worked example
Tip = 500 × 20 / 100 = 100; Total = 500 + 100 = 600; Balance = 600 − 100 credited deposit = 500 (no tax or rounding)
Assumptions and limits
Tipping practices vary by country, studio and preference. The 20% starting value is editable, not a universal requirement. Only subtract deposits credited to this bill. The model does not add a separate non-creditable booking fee.
Sources and methodology
Method reviewed:
Frequently asked questions
How is the result calculated?
Enter the full price of the completed session. A credited deposit reduces today’s balance after the tip is calculated. Choose included tax to extract the pre-tax basis, or added tax to add tax to the bill. Rounding changes the tip, not the service price.
What should I check before using the result?
Tipping practices vary by country, studio and preference. The 20% starting value is editable, not a universal requirement. Only subtract deposits credited to this bill. The model does not add a separate non-creditable booking fee.
Are my inputs sent to a server?
Calculations run in your browser. This plugin does not send your entered values to a server or save them. Other site analytics are governed by the site privacy policy.