Why splitting a bill evenly doesn't always divide evenly
A $126.25 bill split four ways is $31.5625 each — not a number you can actually hand someone. Round everyone down to $31.56 and the group only collects $126.24, a cent short of the real bill. This calculator solves that properly: it works out exactly how many people need to pay one cent more so the total collected matches the bill exactly, instead of quietly losing money to rounding.
$126.25 ÷ 4 = $31.5625 per person (not a real amount) 3 people pay $31.56, 1 person pays $31.57 3 × $31.56 + 1 × $31.57 = $126.25 — exact Equal split vs. itemized split
An equal split treats everyone the same, which is fine when the group ordered roughly similar amounts. It stops feeling fair the moment someone orders a $12 salad and someone else orders a $40 steak with three cocktails — that's what the itemized mode is for.
Alice ordered $32.50 (35.42% of the subtotal) Bob ordered $18.00 (19.62%) Carol ordered $41.25 (44.96%) Tax + tip ($7.34 + $16.52 = $23.86) is split in those same proportions Alice's share: 35.42% × $23.86 = $8.45 → Alice owes $32.50 + $8.45 = $40.95 Everyone pays for their own tax and tip in proportion to what they ordered, rather than splitting it evenly regardless of who ordered what.
A note on tipping and tax
This calculator computes tip on the subtotal, before tax is added — the standard etiquette convention, and the more common practice among tipping guides. Some people tip on the post-tax total instead; if that's your preference, add a slightly higher percentage to compensate, since tax is usually a small fraction of the bill.
Frequently asked questions
How do you split a bill fairly among a group?
Add up the subtotal, tax, and tip for a total, then divide by the number of people. If everyone ordered roughly the same amount, split evenly. If orders varied a lot, split proportionally instead — each person pays for what they ordered, plus their share of tax and tip based on how much of the bill was theirs.
Should tip be calculated before or after tax?
The standard etiquette convention is to tip on the pre-tax subtotal. Some people tip on the total including tax instead — either is common in practice, and the difference is usually small since tax is typically a modest percentage of the bill.
What happens when a bill doesn't divide evenly?
This calculator assigns the leftover pennies to enough people (one extra cent each) so the total collected matches the actual bill exactly. Everyone pays either the same rounded amount, or one cent more, rather than the whole group quietly falling a few cents short.
How does the itemized split handle someone who didn't order anything?
Since tax and tip are split in proportion to what each person ordered, someone with a $0 entry is assigned $0 of the tax and tip too. If you want everyone to chip in evenly regardless of what they personally ordered, use Equal Split instead.