How to split a restaurant bill fairly
The person who ordered a $14 salad shouldn’t pay the same as the person who ordered the $62 ribeye and three old fashioneds. Here’s the simplest way to split by item — by hand, or faster with an app.
Splitting a bill evenly is the default because it’s easy. It is also, almost always, unfair. A typical four-top at a restaurant has a 20–40% spread between the cheapest and most expensive order. Multiply that by a few drinks, a shared appetizer, 8.875% tax, and a tip, and the person who ordered the least can easily end up subsidizing the table by $15–$25.
The fair approach is called an itemized split. Every person pays for what they actually ordered, plus their proportional share of tax and tip. It sounds tedious. It is tedious. The math is what made apps like splitmaxuseful in the first place. Here’s the method, then a worked example.
The method, in four steps
1. List each item against the person who had it
Pass the receipt around. Everyone says what they ordered. Write each line item next to a name. Shared items (the nachos, the bottle of wine) get tagged as shared and we’ll handle them separately.
2. Sum each person’s pre-tax subtotal
Add up the items assigned to each person. This is their “personal subtotal.” For shared items, divide the cost by the number of people who actually ate or drank the thing. Not the number of people at the table — the number of people who had it.
3. Apply tax and tip proportionally
Find each person’s share of the pre-tax total as a percentage. Apply that same percentage to the tax and tip lines. This is the part people get wrong most often: tax and tip are not flat fees, they scale with what you ordered.
4. Round to the dollar (up, not down)
Round each person’s total up to the nearest dollar. The overage covers the small arithmetic errors that always exist — and usually tips the server a tiny bit more, which is a good outcome.
A worked example
Four people at a Thai restaurant. Pre-tax subtotal: $128.00. Tax (8.875%): $11.36. Tip (20% on pre-tax): $25.60. Grand total: $164.96.
| Person | Items | Pre-tax | Share of tax + tip | Total owed |
|---|---|---|---|---|
| Alex | Pad Thai, seltzer | $22.00 | $6.35 | $28.35 → $29 |
| Bea | Green curry, Thai iced tea | $26.00 | $7.51 | $33.51 → $34 |
| Cam | Drunken noodles, 2 beers | $38.00 | $10.97 | $48.97 → $49 |
| Dee | Duck curry, 3 cocktails | $42.00 | $12.13 | $54.13 → $55 |
Even split would have been $41.24 each. Dee would have underpaid by almost $13, and Alex would have overpaid by almost $13. Same table, same bill — different outcome for everyone.
Edge cases worth handling
Shared appetizers
Divide by how many people actually ate it, not how many are at the table. If two people didn’t touch the calamari, they don’t pay for it. This matters more than people think on group orders — a $28 appetizer split three ways is $9.33 each, not $7 across a four-top.
Alcohol when not everyone drinks
Seventeen states tax alcohol at a separate, higher rate than food — sometimes significantly (Washington charges an extra 20.5% on spirits in restaurants). If one person at the table is sober, an even split forces them to pay tax on alcohol they didn’t consume. Keep alcohol on the drinker’s line and apply the right tax rate to it.
Coupons and gift cards
Apply them to the pre-tax total, then redistribute the discount proportionally. If Alex’s pre-tax was 17.2% of the table’s total, Alex gets 17.2% of the discount. This is what restaurants do automatically, and it’s what you should do too.
One person covers, others pay them back
Most groups settle this way now: one person puts the whole bill on their card, everyone else Venmos them. This is where splitting by item in your head breaks down. It’s also the exact moment tracking expenses as a group gets hard, especially on trips where the same person keeps picking up the tab.
When “fair” isn’t what the group wants
Sometimes the group chooses to split evenly anyway — a celebration where someone’s birthday dinner is the excuse, a work meal where everyone’s roughly at the same ticket, or close friends who just don’t care. That’s fine. The point isn’t that itemized splits are always correct. The point is that they’re available when the spread is big enough to matter, or when someone at the table quietly notices they’re paying a lot for a small meal.
If you’d rather not do this math at the table, splitmax scans the receipt, lists every line item, and lets each person tap what they had. Tax and tip get distributed proportionally. Everyone pays you through Venmo, Cash App, PayPal, or Zelle — no spreadsheet, no app downloads for the rest of the group.