Is a common fund worth setting up before the trip?

Only if the group is large and the costs are highly predictable. On most trips it is simpler for each person to pay what falls to them and settle everything at the end: a common fund forces you to keep two sets of books, the pot and the expenses that fell outside it.

How do you handle expenses in another currency?

Log the expense in the currency you actually paid in and let the app convert it into the group’s reference currency. What you should not do is convert by hand and record the result: you lose the original figure and there is no way to check the maths later.

What do I do if someone does not pay what they owe?

Having the balance recorded and visible to everyone resolves most cases without anyone having to ask in person. Automatic reminders help precisely because they depersonalise the request: it is not a friend asking for money, it is the app.

Can I split expenses with someone who does not have the app?

Yes. In Splitwo you can invite by link and that person takes part as a guest, without installing anything or creating an account. On a trip that is the difference between the group working from day one and half of it never joining.

How to split expenses on a group trip

Almost no trip is ruined by money itself, but by nothing having been agreed before leaving. This guide is the order that works: what to settle in the group chat, what to log during the trip, and how to settle up afterwards without anyone chasing anyone.

Last updated: 2026-08-28

1. Agree on three things before you leave

The awkward conversation is far cheaper before the trip than after it. With these three points settled, 90% of the problems never come into existence.

What goes in the shared pot and what does not. The usual split: accommodation, shared transport and group dinners in; souvenirs, treats and the 3am bar, on you.
How it gets divided. Evenly is the simplest and almost always the right answer. If someone sleeps on the sofa or does not drink, decide the exception now, not when the bill arrives.
Which currency closes the books. If you are travelling abroad, pick your home currency as the reference and convert everything into it, not the other way round.

2. Anyone can pay, but log it the same day

The same person does not have to pay every time, and you do not need a common fund. What you do need is to record every expense on the day it happens. Memory of who covered Tuesday dinner lasts far less than people think, and the arguments at the end are almost always about expenses nobody wrote down.

Log three things and you are done: how much, who paid, and who it is split between. Attaching a photo of the receipt removes half the later doubts.

3. Watch out for expenses that are not everyone’s

The most common mistake is putting something in the shared pot that only three out of six enjoyed. The museum ticket two people skipped, the taxi four of you took, the single room one person asked for.

The healthy rule is simple: if not everyone took part, the expense is split only between those who did. Marking it takes ten seconds in the moment and avoids the feeling of subsidising someone else’s trip, which is what really poisons a group.

4. Split evenly by default, adjust only when it matters

There are three ways to divide an expense: evenly, by percentage, or by exact amounts. All three have their moment, but that should be the order of preference.

Even splits solve nearly everything and leave no room for interpretation. Percentages work when the split is unequal but proportional, like a house where a couple takes the double room. Exact amounts are for when the bill already comes itemised and everyone knows their share, like a dinner where one person had the set menu and another just a coffee.

5. Settle once, at the end, with the fewest transfers

This is where most money and patience gets lost. If six people have covered things for each other over a week, the list of crossed debts can run to fifteen entries. Paying them one by one is absurd: many cancel each other out.

The right move is to net them. If A owes B 30 and B owes C 30, A pays C directly and B drops out entirely. A good calculation turns fifteen debts into three or four real transfers. Splitwo runs that calculation for you when you tap settle group, but if you do it by hand the principle is the same: never pay a debt that cancels against another.

6. Close the group and keep the history

Once everything is settled, keep the record. It serves two purposes: closing any doubt that surfaces weeks later, and giving you a real reference for what the trip cost per person the next time you plan one.

Exporting to CSV or PDF before archiving the group is a minute of work you will be glad of if anyone asks.

Frequently asked questions

Is a common fund worth setting up before the trip?: Only if the group is large and the costs are highly predictable. On most trips it is simpler for each person to pay what falls to them and settle everything at the end: a common fund forces you to keep two sets of books, the pot and the expenses that fell outside it.
How do you handle expenses in another currency?: Log the expense in the currency you actually paid in and let the app convert it into the group’s reference currency. What you should not do is convert by hand and record the result: you lose the original figure and there is no way to check the maths later.
What do I do if someone does not pay what they owe?: Having the balance recorded and visible to everyone resolves most cases without anyone having to ask in person. Automatic reminders help precisely because they depersonalise the request: it is not a friend asking for money, it is the app.
Can I split expenses with someone who does not have the app?: Yes. In Splitwo you can invite by link and that person takes part as a guest, without installing anything or creating an account. On a trip that is the difference between the group working from day one and half of it never joining.