I choose the tip base before the percentage
I enter the full tattoo or session price, the deposit already paid, and the planned number of sessions separately. The calculator defaults to Full tattoo price, because a deposit is normally a payment already made rather than an automatic discount to the service value.
If I specifically want the percentage based only on what is still due today, I switch the control to Remaining balance. The selected base is always visible before I choose a percentage.
Full price vs. remaining balance example
For a $300 session with a $100 deposit, the remaining balance is $200. At 20%, the two choices intentionally produce different results:
- Full tattoo price: 20% of $300 = $60
- Remaining balance: 20% of $200 = $40
The calculator does not decide which approach the studio expects. I use the toggle to make my own calculation explicit instead of silently subtracting the deposit.
Multi-session work
For a project spread across several appointments, I use the sessions field as context and decide whether I am calculating after each session or once for the complete project. I avoid mixing those approaches, because doing so can count the same project value twice.
Tattoo studios can have different payment and tipping policies, so I check the invoice or ask the studio before treating any percentage as expected.
Voluntary tip and related tools
A voluntary tip is different from a compulsory service charge. The IRS distinguishes customer-chosen tips from mandatory service charges for federal tax purposes.
For another personal-service calculation, I use the Hair Salon Tip Calculator or Nail Salon Tip Calculator.
When I use the full-price base
I use the full-price option when the deposit was simply an earlier payment toward the same session. For example, if a $400 appointment required a $100 deposit and I want to compare a 15% tip on the complete service price, the calculator uses $400 as the base and shows $60. The remaining $300 balance still matters for what I owe the studio that day, but it does not silently redefine the service price.
I use the remaining-balance option only when I deliberately want to calculate from the unpaid amount. That makes the choice visible and prevents the common mistake of subtracting a deposit automatically and then forgetting which price the percentage was based on.
What I check before a multi-session payment
For a multi-session project, I check whether each appointment is priced separately or whether the studio is tracking one project total. If each session has its own invoice, I can calculate from that session price. If a single project price is being paid in installments, I avoid applying the same full-project percentage repeatedly.
I also check the studio's payment policy before assuming that a percentage is expected. The calculator is designed to compare amounts, not to turn one tipping convention into a rule for every artist, studio, or country. The Tattoo Tipping Guide covers deposits, flat amounts, percentages, and multi-session work in more detail.