Group Dining Pre/Post-Tax Split Calculator
Split a group bill evenly and compare pre-tax vs post-tax tipping. See exactly what each person owes and the dollar gap between tipping bases.
Statutory Gratuity Rule: Under FLSA 29 U.S.C. § 203(m) and 29 CFR Part 531, tips are the absolute property of employees; employers and managers are strictly barred from retaining any portion of tip pools. Standard U.S. dining gratuity benchmarks range from 15% (standard service) to 18%–20% (good service) and 22%+ (exceptional service), calculated directly on the pre-tax subtotal.
Group Dining Pre/Post-Tax Split Calculator
Split a group bill evenly — and see the pre-tax vs post-tax tip difference
Pre-tax tipping bases the gratuity on the subtotal; post-tax adds tax into the tip base.
Split Results
Pre-tax vs post-tax difference
The gap goes partly to the government via tax, not your server. Most etiquette guides recommend pre-tax.
Tip is calculated on the selected basis. Tax rates are state base rates for estimation only. For official tipped-wage rules, see the U.S. Department of Labor.
About This Calculator
What it does
When the check arrives for a group, the question is rarely 'how much' but 'on what basis.' This calculator splits the bill evenly across everyone and shows the tip computed on the pre-tax subtotal (what most etiquette guides recommend) versus the post-tax total, with the dollar difference. Tip on the pre-tax subtotal keeps your gratuity with the server rather than sending part of it to the government via tax. Enter the pre-tax subtotal, your state, the tip percentage, and the headcount.
Data sources
- National Restaurant Association
- U.S. Bureau of Labor Statistics
- Internal Revenue Service
- State Revenue Departments
Last updated: 2026 · Fact-checked against primary industry sources
Frequently asked questions
Why split on the pre-tax subtotal for a group?
Sales tax is paid to the government, not your server. Tipping on the pre-tax subtotal keeps the gratuity entirely with the person who served you, and the difference grows with the bill and the tax rate.
How do I split a group bill fairly?
For an even split, add subtotal + tax + tip and divide by the headcount. This calculator does that and shows both the pre-tax and post-tax tip so you can choose.
What if some people ordered much less?
Switch to the itemized Group Dining Split Calculator, where each person pays their own items plus a fair share of shared dishes and the tip proportional to what they ordered.
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