How to use Tip Calculator
- Enter the bill amount shown on the receipt, including any sales tax already charged.
- Choose a tip rate and the tax percentage already in the bill. Select equal shares or enter one name,weight per line for weighted shares.
- Set the tip base and share rounding. The tip, total and each person's share update as you change the fields.
Example: Tip Calculator
Split a tax-free 120.00 bill among three people with an 18% voluntary tip.
Options
- Bill and sales tax
- The bill field is the amount after any sales tax already on the receipt. When you enter that tax rate and select a pre-tax tip, the tool backs tax out of the bill before calculating the tip.
- Tip base
- You choose whether the tip percentage applies to the amount before tax or the full receipt amount. If the receipt has no tax, both choices use the same base.
- Per-person rounding
- Equal mode keeps its existing displayed-share remainder notice. Weighted exact mode allocates cents to sum to the displayed total. Round-up modes round each total share upward and show the amount collected across the group.
Supported inputs and limits
Where your input is processed
This tool processes your input in this browser. Your text and files are not uploaded to UseFreeTools. Check this tool's limits for anything it may save on your device.
Sources and assumptions
Checked 2026-09-26. The calculator treats the entered bill as tax-included and, when asked for a pre-tax tip, divides it by one plus the entered tax rate. Tip = selected base times your chosen percentage; total = bill plus tip; exact share = total divided by people. The tip percentage is always the one you enter: the tool suggests no amount and knows no local custom. This is a voluntary tip calculation. The IRS distinguishes voluntary tips from required service charges, which can affect a real receipt. The tool offers no tax or financial advice.
Internal Revenue Service, Tip recordkeeping and reporting (checked 2026-09-26)
Questions about Tip Calculator
Should I tip on the total before or after tax?
You can choose either basis. If you want a pre-tax calculation, enter the sales tax percentage already included in your bill and leave the pre-tax option on. The tool does not set a tipping rule for you.
What if a service charge is already on the receipt?
Check the receipt before adding a separate tip. A required service charge is different from a voluntary tip, and this tool does not identify or remove it from the entered amount.
Why can rounded shares add up to more than the bill?
Rounding each person's share upward can create an extra cent or more across the group. Even an equal share shown to cents can leave a small remainder. The result shows the group total so you can decide how to divide it.
How do unequal shares work?
Enter a name and positive weight on each line, such as Ana,1 and Ben,2. Ben receives twice the unrounded share. Exact mode distributes any remaining cents by the largest fractional remainder, with earlier lines breaking ties. Check the result against the orders you mean to divide.