How the Tip Calculator Works
The calculator separates the pre-tax subtotal, tax, and tip before it divides the final amount. If the bill already includes tax, entering the tax rate allows the tool to estimate the original subtotal. If tax still needs to be added, the entered bill is treated as the pre-tax subtotal.
Core calculation
Final total = Bill before tip + Tip + Rounding adjustment
Tip equals the selected tip basis multiplied by the tip rate. Exact shares are distributed to the nearest cent so the displayed per-person amounts add back to the final total.
Tip Before or After Tax
A pre-tax tip is based only on goods and services. An after-tax tip also applies the percentage to tax, so it produces a slightly larger gratuity. Local customs differ, and a restaurant may print suggested amounts using either method. Choose the basis you intend rather than assuming every receipt uses the same convention.
Service charges and mandatory gratuities should normally be treated as part of the bill before deciding whether to add another voluntary tip. Check the receipt wording because a service charge is not always distributed in the same way as a voluntary gratuity.
Equal and Weighted Bill Splits
A weighted split is a proportional shortcut, not an item-by-item receipt audit. If exact orders, discounts, or tax rules differ by item, calculate those individual amounts first and use their values as the basis for a more detailed settlement.
Understanding Rounding
Exact mode keeps the calculated total and distributes any remaining cent so the shares reconcile. Rounding the group total changes the total once and then divides it. Rounding each person up is convenient for cash or simple transfers, but several small increases can create a larger combined rounding adjustment. The result shows that extra amount separately.
Continue Your Calculation Workflow
Check an unfamiliar rate with the Percentage Calculator, estimate added or included tax using the GST Calculator, calculate a sale price before splitting with the Discount & Final Price Calculator, or divide shared travel costs using the Fuel Cost & Mileage Calculator.