Settling up a shared holiday or trip

Ten days, six people, eighty receipts — nobody has to reconstruct that from a WhatsApp thread on the last evening. Everyone records their own expense as they go, in thirty seconds; CostDivider keeps the running total, and at the end the settlement is there: with six people, often three transfers instead of fifteen, in the same order for everybody.

In short

1. Create one group for the trip, for example "Sardinia 2026".
2. Set your own share — as the creator you start at 0.
3. Add everybody and weight the shares.
4. Record every expense on the spot, with the right payer.
5. Lock the group at the end and settle up.

One group per trip

Not "Holidays" but "Sardinia 2026". The reason lies in how CostDivider calculates: a member's share always refers to the total of their group, not to a period of time. Whoever travels next year with a different crowd will not want to drag this total along.

What counts as a "member"?

A member is a wallet, not necessarily a person. A couple paying out of one pot goes in as one member — otherwise you end up shuffling amounts between two people who settle up together anyway.

The reverse holds too: anyone who lays out their own money needs their own membership, or they cannot be picked as the payer of an expense.

Weighting the shares

For most trips: give everybody the same percentage. Whether it reads 100 or 16 makes no difference — CostDivider turns equal percentages into equal shares. Everything is divided evenly, however much it adds up to in the end.

It gets interesting when not everyone should carry the same amount:

• Children count half. Four adults get 20%, two children 10%. Percentages here are simply weights; the actual amounts follow from the trip's spending.
• A couple in a double room, one person in a single. Expressible through percentages, once you agree the weights in advance.
• Somebody joins with a fixed sum. The passenger who only covers the travel costs gets a fixed amount. Fixed amounts are taken off first, and the percentage members divide the rest.

On the road: record, do not collect

Every expense needs three things: amount, date and who paid. The description is the part you will thank yourselves for later — "dinner in Cagliari" still makes sense in three weeks, "restaurant" does not.

Anybody you give the right to record expenses can enter their own. That is the whole difference between a settlement that works and one where a single person collects receipts for ten days.

If you are travelling somewhere that settles in another currency, set the group's currency accordingly. A group works in exactly one currency; the currency decides only the symbol and the decimal places — there are no cents in yen. Nothing is converted: anyone spending in two currencies converts when recording, or creates a second group.

The holiday kitty

If everybody pays into a shared pot up front, record that as a deposit with no recipient — that is the group's kitty.

One point that belongs here honestly: what sits in the kitty, CostDivider cannot pay back out. A payout from the pot cannot be recorded, so the app does not invent one either. At the end the remainder stands there as what it is — money still in the kitty, which you divide among yourselves.

The simpler route, where it is available: run no kitty at all. Everyone pays whatever comes up, everything is recorded, and at the end you settle in a handful of transfers. That is what CostDivider is built for.

When not everybody was in on everything

Three of six take the boat trip, two stay on the beach. For this case CostDivider has no per-expense participation — who takes part in what hangs on membership of the group.

The answer is a second group, "Sardinia 2026 – boat trip", with exactly those three. Both groups run side by side, each with its own settlement.

The price of that belongs in the picture: CostDivider does not net off across groups. You get two settlement suggestions, and if the same two people appear in both, that is two transfers instead of one. For one or two side trips this is fine. If constantly changing subsets are spending together, CostDivider is the wrong tool for that trip — which is a fair thing to be told rather than something to hide.

At the end

Lock the group once the last expense is in. Nothing more can be added, and the snapshot becomes the final result.

CostDivider then suggests who transfers how much to whom — with as few transfers as possible. With six people that is often three instead of fifteen. Everybody sees the same list in the same order, which is what makes "I pay Ben, you pay Anna" work at all.

Deposits remain possible in a locked group too: whoever has transferred ticks it off.

Five moves that make the trip easier

• Set your own share. As the creator you sit on a fixed amount of 0 until you change it — change it once, and you carry your part as a matter of course.
• Record as you go rather than on the last evening. An expense takes twenty seconds, and anybody with the right can enter it themselves. That is precisely what spares you the receipt evening.
• Enter the payer. Who paid is the one detail that cannot be reconstructed afterwards — and the one the settlement suggestion is built from.
• Keep a couple who pay from one pot as one member. That halves the rows and fits reality better than two separate accounts.
• Plan deliberately for latecomers. A share always applies to the group's entire cost, not only from the moment of joining. Somebody who really is only there for the second week gets their own group for that week — then both are right.

Common questions

Can everybody record expenses?

Yes, if you give them that right. It can be granted individually — as can the right to manage members or to edit the group.

What about different currencies?

A group works in one currency. Nothing is converted.

Can fellow travellers take part without an account?

Yes. They get a personal link and see their figures through it, without registering.

What happens after locking?

Expenses are fixed, deposits stay possible. Whoever administers the group can lift the lock.

Example figures. Green means the group owes that person money; red means they owe the group.

Next

• Settling up a shared gift
• Settling up the flatshare
• Settling up utility costs for a house or flat
• Settling up a shared move-in budget
• Splitting the running costs when part of your home is used for a business
• Collecting money for one bill, with everybody who joins sharing it