How to read the result
The result separates tax, tip, total bill and per-person share so the assumptions remain visible. Tipping on the after-tax total produces a slightly larger tip than tipping on the subtotal.
English calculators by country
Tipping and splitting the check in the US
Calculate tax, a chosen tip and an equal split from the pre-tax subtotal. Select whether the tip applies before or after tax, and inspect any included service charge before adding a tip. Optional rounding changes the total collected from the group.
How to use this calculator
- Enter the pre-tax subtotal and the receipt's sales-tax rate, then choose whether the tip applies before or after tax.
- Set the service-appropriate percentage and check the receipt for any automatic gratuity before adding another tip.
- Choose the number of people and use round-up only after deciding how the group will handle the extra cents.
What this estimate does not capture
Local customs and service charges vary. A service fee is not always distributed to staff in the same way as a voluntary gratuity, so ask the business when the receipt is unclear.
UNDERSTAND THE NUMBERS
Agree on the tip base before splitting the bill
Fixed educational example · independent of your inputs above. $ means US dollars; these are not current rate quotes or return forecasts.
Four people share a $100 bill before 8% sales tax and choose a 20% tip for this example. Compare calculating the tip on the pre-tax bill with calculating it on the $108 tax-inclusive amount. This is arithmetic, not a recommended tip rate.
| Tip base | Total bill | Per person |
|---|---|---|
| Before tax | $128.00 | $32.00 |
| After tax | $129.60 | $32.40 |
| After tax, rounded up | $132.00 collected | $33.00 |
What the difference tells you
Rounding each person's $32.40 up to $33 collects $132, which is $2.40 more than the $129.60 bill. That difference is separate from the selected 20% tip. Decide whether it is returned, kept for a shared expense or added to the payment.
Before drawing a conclusion
Enter a pre-tax bill when adding sales tax separately. If the receipt already includes tax, adding it again overstates the bill. Check for an included service charge before adding a voluntary tip. Equal splitting does not account for different orders.
A comparison to try
Toggle pre-tax versus after-tax tipping while leaving everything else unchanged. Then enable rounding and compare total money collected with the receipt total.
Estimate a travel bill in another currency →References for this explanation
Prepared by EconoPi · examples and explanations reviewed September 19, 2026. Tables are our calculations under stated assumptions, not forecasts or recommendations by the referenced organizations.
Frequently asked questions
What percentage should I tip?
The calculator lets you compare chosen percentages; it does not prescribe one. Check the receipt for included charges and consider the local setting and service before entering a voluntary amount.
Do I tip on the pre-tax amount?
You can choose either basis. With the after-tax option off, the tip applies to the pre-tax subtotal; with it on, the calculator includes sales tax in the tip base.
When is gratuity added automatically?
Policies differ by business. Check the receipt or ask whether a service charge is already included and what it covers before adding a separate voluntary tip.
How do I tip when paying by card?
Write the tip on the receipt's tip line and total it yourself. The round-up toggle makes the per-person number easy.
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All math runs in your browser and your inputs are never sent to a server. Settings are saved locally and share links encode the state in the URL. For information only — not investment or tax advice.