Bill Split Calculator – Guide & Formulas
Split restaurant bills, party tabs, or shared expenses among friends. Customize tip percentages and unequal itemized contributions.
Quickly divide dining checks, group travel tabs, or rent expenses. Adjust tips, calculate sales tax allocations, and support customized itemized splitting for individual orders.
Key Takeaway
Use the free Bill Split Calculator to split restaurant bills, party tabs, or shared expenses among friends. customize tip percentages and unequal itemized contributions. Get instant results with step-by-step explanations.
How to Use the Bill Split Calculator
- Enter the base bill subtotal.
- Choose a tip percentage (e.g. 15%, 18%, 20%) and enter the tax rate.
- Enter the number of people splitting the bill evenly, or use itemized modes to split unevenly.
The Formula
Variable Definitions
- S: Base bill subtotal before tax and tip
- P: The share owed per person
- N: The number of people
Splitting Dinner with Friends
A dinner bill is $120. Tax is 8%, and the group wants to add a 15% tip. How much do 4 people pay if split evenly?
- Step 1: Calculate tax: $120 × 0.08 = $9.60.
- Step 2: Calculate tip: $120 × 0.15 = $18.00.
- Step 3: Sum total bill: $120 + $9.60 + $18.00 = $147.60.
- Step 4: Divide by 4 people: $147.60 / 4 = $36.90 per person.
Frequently Asked Questions
Should tip be calculated before or after tax?
Standard etiquette suggests calculating tips on the subtotal amount before tax is added, though many modern credit card machines calculate tip on the post-tax total.
How does itemized splitting work?
Itemized splitting lets you input specific item prices for each person (e.g., if one person ordered a steak and another a salad) and distributes tax and tip proportionally.
Can I split expenses with custom shares?
Yes. Our advanced mode supports custom percentage split weights or direct variable amounts per participant.