What changes the result most
Person count, tip basis, percentage, and rounding usually move the result most. Upward rounding can matter more on a small bill divided among many people.
Tip & Split Bill Calculator
Calculate tip, group total, and per-person amount with explicit subtotal or after-tax basis and optional upward rounding.
Runs locallyKeyboard friendlyUpdated: August 30, 2026
Enter your scenario
Results update as valid inputs change. Correct any highlighted field before relying on the answer.
Primary result
Each person pays$36.86
Tip amount$17.28
Group total$110.58
Rounding adjustment-$0.01
Effective tip on subtotal20%
People3
A 20% tip produces $17.28 in tip and $36.86 per person for 3 people.
Use the result
From calculation to decision
Use this tool to make the tip basis and equal-split rule explicit before the group pays. It does not assign different menu items to different people.
What to do next
Change one high-leverage input, compare the new result with the default, and confirm any current rate, policy, quote, or external rule that controls the real decision.
Save and report
Calculation happens in this browser. Shared links include the visible input values, so inspect the URL before sending a sensitive scenario.
If a result appears wrong, report an issue for this calculator.
When this calculation helps
Use this tool to make the tip basis and equal-split rule explicit before the group pays. It does not assign different menu items to different people.
The result separates the primary answer from supporting values so you can see both the number and the assumptions that produced it. Adjust one field at a time when comparing scenarios; changing several inputs together makes it harder to identify why the answer moved.
Formula / methodology
tip = selected basis × tip percentage
exact group total = subtotal + tax + tip
exact share = group total ÷ people
collected total = rounded share × peopleMoney stages use explicit cent rounding. When shares round upward, the difference between collected total and exact total appears as a rounding adjustment.
Assumptions and limitations
- Every person pays an equal share.
- The tax value is already known and entered separately.
- Tip presets are editable examples, not a claim about local custom.
- Rounding applies to each share, not only to the group total.
Worked examples
Three-way split before tax
An $86.40 subtotal, $6.91 tax, and 20% pre-tax tip produce a $17.28 tip and approximately $36.86 per person.
Cash-friendly shares
Select next-dollar rounding to collect whole-dollar shares; inspect the rounding adjustment before agreeing to it.
Common mistakes
- Applying the tip percentage to tax unintentionally.
- Rounding the tip and each share several times.
- Assuming an equal split fits a group that ordered very different amounts.
FAQ
Should tip be calculated before or after tax?
Practices vary. This calculator exposes both bases so the group can choose deliberately.
Why can the rounded group total be higher?
Rounding every person’s share upward can collect more than the exact bill-and-tip total; the adjustment card shows the difference.
Sources and assumptions
The calculation uses visitor-entered values and percentage arithmetic recorded in the Source Guide. No tip percentage is presented as universally required.
Updated: August 30, 2026. Method: TIP_SPLIT-1.0. Inputs remain visitor-entered unless a data timestamp is shown beside them.
Calculator-specific review
Decision supported: Calculate a tip, group total, and per-person share under an explicit basis and rounding rule.
Inputs and two scenarios
The inputs below are scenario controls, not facts supplied by a source. Change the values to see how this calculator responds to the decision you are making.
published default example: Bill subtotal: 86.4; Tax already on bill: 6.91; Tip percentage: 20; People splitting bill: 3; Tip basis: Pre-tax subtotal; Per-person rounding: Nearest cent.
materially different higher tip & split bill calculator scenario: Bill subtotal: 129.6; Tax already on bill: 10.37; Tip percentage: 30; People splitting bill: 3; Tip basis: Subtotal plus tax; Per-person rounding: Nearest cent.
What changes the result
Tip basis, percentage, person count, and rounding choice drive the per-person amount.
Method and evidence boundary
Tip is the selected percentage of subtotal or subtotal plus tax; total is divided by the whole person count and optionally rounded upward. The result uses arithmetic and visitor-entered values; preset percentages are examples rather than etiquette claims.