Splitting expenses when some people aren't drinking
Five of you go out for dinner. The bill is £240. Two of you didn't drink. Three of you had a bottle of wine and three rounds of cocktails. Equal split would mean the non-drinkers subsidise the drinkers by £20 each.
That's small enough to shrug off once. Across a week-long trip with ten dinners, it's £200 of subsidy. That's where resentment builds.
Drinks come off the bill before splitting; the food gets split equally; the drinks split among the people who drank. Don't try to invent rules about specific cocktails versus glasses of house wine.
Three reasons people don't drink on group trips:
For each of those, equal-splitting drinks is at best clumsy and at worst actively unkind. The pregnant friend is already coping with weeks of "but you're drinking water?". The recovering friend may be in the first six months sober.
Most receipts already separate them. Modern receipt scanners will categorise items reliably; otherwise it's a 30-second manual sort.
Worked example. £240 bill. £140 food, £100 drinks. Five people, three of whom drank.
Drinkers pay £61.33; non-drinkers pay £28. The maths balances.
Don't differentiate "Sarah had two glasses of wine but Mark had a £14 cocktail". Drinks total split equally among drinkers is fine. The exception is one person ordering an obviously premium outlier - a £45 bottle of wine on a £200 dinner. That's reasonable to flag.
Pro-rata. If food was 58% of the food-and-drinks total, the service charge splits in those proportions too. A modern splitter handles this automatically. We covered the receipt-scan flow in how receipt scanning actually works in 2026.
The phrasing that works: "Want to itemise this one so the non-drinkers don't pay for the wine?"
Said by whoever's scanning the receipt, not by the non-drinker themselves. Naming the principle, not the person.
On a £40 dinner with one round of beers, equal-splitting is fine. The maths matters at the margin where the drinks bill is meaningful relative to the food bill - £20+ of drinks per person on a single bill.
On your next group trip, create a group, scan the dinner receipt, and tap items against names. Tax and service distribute automatically.
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