How to Split a Restaurant Bill Fairly (Itemized, With Tax & Tip)
Split by items, not evenly: each person pays what they ordered plus their proportional share of tax and tip. Here's the 2-minute fair method.
The short answer: split by items, share tax and tip proportionally
The fairest way to split a restaurant bill is itemized splitting: each person pays for exactly what they ordered, shared dishes are divided among the people who shared them, and tax and tip are split in proportion to each person's subtotal — not per head.
Splitting evenly only feels fair when everyone ordered roughly the same amount. The moment one person had a $58 steak and a cocktail while another had a $16 salad and water, an even split quietly makes the salad person subsidize the steak.
A worked example with real numbers
Say three friends have a $95.50 subtotal: Alex ordered $52.50 of food and drinks, Blake $27.00, and Casey $16.00. Tax is $8.47 and you tip 20% on the subtotal ($19.10), so the grand total is $123.07.
Alex's share of the subtotal is 55%, Blake's is 28%, Casey's is 17%. Apply the same percentages to tax and tip: Alex pays $52.50 + $4.66 tax + $10.51 tip = $67.67. Blake pays $27.00 + $2.39 + $5.40 = $34.79. Casey pays $16.00 + $1.42 + $3.19 = $20.61. The three shares add to exactly $123.07 — nobody subsidizes anybody.
- Each person's tax = total tax × (their subtotal ÷ table subtotal)
- Each person's tip = total tip × (their subtotal ÷ table subtotal)
- Check: all shares must add to the exact printed total
How to handle shared appetizers, pitchers, and desserts
Split each shared line item evenly among the people who actually shared it — not the whole table. If four of six people split $14 nachos, that's $3.50 each for those four; the two who abstained pay nothing for it.
For things the entire table genuinely shared (bread service upgrades, a bottle of wine everyone drank), divide by everyone. The principle is the same either way: cost follows consumption.
Doing it without spreadsheet pain
You can do all of this with a calculator, but at a real table it takes ten minutes and someone always rounds themselves a discount. The faster path: photograph the receipt with spli7 (spli7.com) — it reads every line item, everyone taps what they ordered from one shared link, and each person sees their exact share with tax and tip already apportioned. Payment links for Venmo, Cash App, PayPal, or Apple Cash come pre-filled with the amount.
Whichever tool you use, the goal is the same: the math should be invisible and the total should reconcile to the penny, because 'close enough' is where resentment starts.
When splitting evenly IS the right call
Even splits make sense for family-style meals where everyone ate everything, for small bills where the difference is under a couple of dollars, or for groups with a strong rotating-treat culture. If the spread between the cheapest and priciest order is small relative to the bill, the social simplicity of an even split can be worth more than the dollar precision.
A good rule of thumb: if an even split would move anyone's share by more than about 15% versus what they actually consumed, itemize.
Frequently asked questions
Should tip be split evenly or proportionally?
Proportionally to what each person ordered. Tip is a percentage of the food and drink you consumed, so someone who ordered twice as much should contribute twice as much tip.
Do you tip on the pre-tax or post-tax amount?
US convention is to tip on the pre-tax subtotal, though many people tip on the total for simplicity. Either is defensible — just apply the same rule to everyone at the table.
How do you split a bill when someone only had water?
They pay only for what they consumed — possibly nothing. Never force an even split on someone who deliberately ordered little; itemized splitting exists exactly for this.
What's the easiest way to split an itemized bill with a big group?
Photograph the receipt with a bill-splitting tool like Split (spli7.com), share the link or QR code, and let each person tap their own items. It removes both the math and the awkward money conversation.
How should couples split a bill with singles at the table?
Itemize: the couple pays for the couple's items. If you're splitting evenly instead, count people, not parties — a couple is two shares, not one.