Calculate accurate gratuity amounts, customize tax calculations, choose between pre-tax and after-tax tip bases, and split dining or service bills evenly across your party.
Select whether gratuity is computed on your receipt's food subtotal or the subtotal plus sales tax.
Divide the entire bill and tip equally among up to 100 diners with exact per-person amounts.
Type any exact tip percentage or use convenient shortcut buttons without biased recommendations.
Gratuity calculations follow straightforward percentage proportions based on the chosen tip base:
1. Sales Tax = Subtotal × (Tax Rate % ÷ 100)
2. Pre-Tax Tip Base = Subtotal
After-Tax Tip Base = Subtotal + Sales Tax
3. Tip Amount = Tip Base × (Tip Rate % ÷ 100)
4. Grand Total = Subtotal + Sales Tax + Tip Amount
5. Total Per Person = Grand Total ÷ Number of People
Explore practical guides on calculating tips, comparing pre-tax versus after-tax math, and splitting restaurant checks.
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GuideUnderstand the mathematical difference between pre-tax and post-tax tipping.
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Formulexa calculates gratuity using standard decimal percentage formulas. Tipping conventions and customs vary by jurisdiction, cultural norms, and industry standards. This calculator provides neutral mathematical tools and does not prescribe moral or statutory tipping amounts.
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A tip calculator multiplies the selected gratuity rate by either the pre-tax subtotal or the after-tax bill, according to your chosen basis. Formulexa then adds tax and tip to the subtotal and divides the total equally by the party size. It does not recommend a tipping rate or interpret local service-charge customs.
Tax is calculated from the subtotal. Tip uses the selected pre-tax or after-tax basis, and the final amount is divided equally when the party size is greater than one.
Tip = selected basis × tip rate; per person = (subtotal + tax + tip) ÷ party size
| Variable | Meaning | Unit or range |
|---|---|---|
| subtotal | Bill before tax and tip | currency |
| tip rate | User-selected gratuity percentage | % |
| party size | Number of equal shares | positive integer |
For a 100 subtotal, 8% tax, and 20% pre-tax tip, tax is 8 and tip is 20. The total is 128; split equally among four people, each share is 32.
The total reflects the exact inputs and basis selected. Equal split means each person pays the same share; it does not account for individual orders, an included service charge, or local tipping expectations.
Either basis can be used; choose the option that matches how you want the tip calculated.
Add subtotal, tax, and tip, then divide the total by the number of people.
Tax is added to the subtotal and can also increase the tip when after-tax basis is selected.
The total tip is divided equally by party size as part of the equal split.
