About the Itemized Bill Split Calculator
This itemized bill split calculator divides a restaurant check by what each person actually ordered. Type one line per person with the prices of their items, add lines for dishes the whole table shared or that only a few people split, and enter the tax and tip. Everyone’s share of tax and tip is proportional to what they ate, so nobody subsidises the most expensive meal.
It suits group dinners, team lunches, bar tabs and takeaway orders where an even split would feel unfair — for example when one person skipped drinks or two people shared a starter. You can enter tax as a percentage or copy the exact tax amount from the receipt, and choose whether the tip is calculated before or after tax.
Write lines like “Alice: 18.50, 4.50”. A line labelled Shared, Everyone or Table is split equally among all names; a line such as “Bob + Chris: 9” is split between just those people. Shares are shown to the cent, so they may differ from the total by a cent or two because of rounding.
How to use the itemized bill split calculator
- 1Write one line per person: their name, a colon and the price of each item.
- 2Add a “Shared:” line for dishes the whole table split.
- 3Use “Name + Name:” for items only some people shared.
- 4Enter the tax rate or the tax amount from the receipt, then the tip.
- 5Read what each person owes, optionally rounded up to whole dollars.
Formula and method
Each person’s subtotal sᵢ is the sum of their own items plus an equal part of every shared item they took part in — dishes marked Shared are divided among everyone, and a line like “Bob + Chris” only between those two. The subtotals add up to the bill subtotal S.
Tax is either the rate × S or the exact amount from the receipt. Tip is the tip rate × S (before tax) or × (S + tax). Each person then pays their subtotal scaled by Total ÷ S, which shares tax and tip in exact proportion to what they ordered. With rounding on, each share is rounded up to the next whole dollar and the extra goes to the tip.
- sᵢ
- Person i’s food and drink, including their part of shared items
- S
- Bill subtotal before tax and tip
- Total
- Subtotal + tax + tip
Worked examples
Three friends with a shared appetizer
Each person gets a third of the $12.60 shared dish ($4.20), making subtotals of $27.20, $32.20 and $18.95 ($78.35 total). Tax at 8% is $6.27 and an 18% pre-tax tip is $14.10, so the bill is $98.72 and each subtotal is multiplied by 98.72 ÷ 78.35 ≈ 1.26.
Four people, a split starter and tax from the receipt
Bob and Chris split a $9 starter and everyone splits a $30 bottle of wine ($7.50 each), giving subtotals of $39.50, $31.50, $36 and $23.75. With $7.45 tax and a 20% tip on $138.20, the bill is $165.84, shared in proportion.
Two people, no tax, rounded up
Sam’s items total $41.80 and Lee’s $12.20. A 15% tip brings the bill to $62.10, so exact shares are $48.07 and $14.03. Rounded up to whole dollars they pay $49 and $15, leaving $1.90 extra for the server.
Frequently asked questions
How do you split a bill by what each person ordered?+
Add up each person’s items, then share tax and tip in proportion: divide the full bill by the subtotal and multiply each person’s items by that factor. This calculator does it automatically, including shared dishes.
How should shared appetizers be split?+
Shared dishes are usually split equally among the people who ate them. Enter “Shared:” for the whole table or list names like “Bob + Chris:” so only those people pay for it.
Should tip be calculated before or after tax?+
In the US, etiquette guides generally suggest tipping on the pre-tax subtotal, though many people tip on the total for simplicity. The difference is small — about the tax rate times the tip rate.
Is it fair to split tax and tip proportionally?+
Yes. Tax is charged on what each person ordered, and tip usually reflects the bill size, so proportional splitting means everyone pays the same percentage on top of their own order.
Why don’t the shares add up exactly to the total?+
Each share is rounded to the nearest cent, so the sum can be a cent or two away from the bill. Turn on round-up to whole dollars to make sure the full amount is covered.