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DIY Cost Tools

DIY Cost Tools

Bill Split Calculator

Split a shared bill with tax, a tip based on the pre-tax amount, and optional group fees.

Number from 0 to 1000000 $.
Number from 0 to 100 %.
Number from 0 to 100 %.
Number from 0 to 100000 $.
Whole number from 1 to 10000 people.

Enter values in the units shown. Empty fields, fractions, comma-formatted numbers, values outside the listed ranges, and non-finite values are rejected.

Total bill
Each person’s share

How to use this calculator

  1. Measure the project or enter costs from a current quote or product label.
  2. Adjust the quantities, coverage, package size, and allowances to match your situation.
  3. Select Calculate, then check the method, worked example, and limitations below.

Formula and method

Total = subtotal × (1 + tax% + tip%) + other fees. Equal share = total ÷ people.

Whole packages and pieces are rounded up. Results disappear when an input changes until the new values are calculated.

Worked example

Pre-tax subtotal 80 $; Sales tax 8 %; Tip on subtotal 18 %; Other group fees 5 $; People 4 people. Results: Total bill $105.80; Each person’s share $26.45.

The example uses the values initially displayed in the fields.

Limitations

Tip policies and tax bases vary. Equal splitting may need cent adjustments to make payments sum exactly.

Review and reference

Reviewed October 5, 2026. The default example, input boundaries, arithmetic, rounding, and invalid input behavior were checked. The method is explained on How Our Calculators Work; replace example inputs with measurements or current product specifications. This is a planning estimate.

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