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.

Group Dining Pre/Post-Tax Split Calculator

Split a group bill evenly — and see the pre-tax vs post-tax tip difference

Bill Subtotal (pre-tax)

Number of People

State (for tax)

Tip Percentage

Tip Basis

Pre-tax tipping bases the gratuity on the subtotal; post-tax adds tax into the tip base.

Split Results

Tip (18% on pre-tax)

$0.00

Tax (9.25%)

$0.00

Total Bill

$0.00

Each Person (6)

$0.00

Pre-tax vs post-tax difference

Pre-tax tip (18%)$43.20

Post-tax tip (18%)$47.20

Extra if you tip post-tax$4.00

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

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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Group Dining Pre/Post-Tax Split Calculator