In short
- Before you leave, agree on what’s shared and how: per person, per family or only among the people who use it.
- During the trip, log each cost the same day: who paid and who it’s split among.
- Costs in another currency are logged with the exchange rate from the day they were paid.
- At the end, add up what each person paid and what their share was, and settle up with as few payments as possible.
Before the trip: what to agree on
- What’s shared. Usually: lodging, transportation (car, gas, tolls, boats) and group meals. Personal things (souvenirs, each person’s shopping) stay out.
- How it’s split. Per person, per family or couple, or only among the people who use each thing. If kids are coming, whether they pay full or half.
- How you pay. With a shared fund, or each person pays as things come up and you settle up at the end.
- Which currency you keep the account in. If the trip is abroad, choose one currency to add everything up in.
Shared fund or settle up at the end?
Shared fund: everyone puts in the same amount at the start and you pay from it. It’s handy for small day-to-day costs, but someone has to hold it and keep track, and it doesn’t work well when not everyone uses the same things.
Settle up at the end: each person pays when it’s their turn and logs the cost. When you’re back, add up what each person paid and what their share was, and make the transfers. It’s more flexible and works even when costs aren’t the same for everyone. Many groups combine both: a small fund for day-to-day costs, and they settle up the rest at the end.
Cases that change the math
Kids who pay half
A common way is for each adult to count as 1 and each kid as ½. If the hotel costs $900 and four adults and one kid are going, that’s 4.5 shares: $200 per adult and $100 for the kid.
Families or couples who pay together
If several families are going, it’s practical for each one to pay as a single unit. That way, at the end, one family makes a single payment to the other instead of every person paying every other person. Some things, like the car or the boat, can be split equally per family, no matter how many people are in each one.
Someone arrives late or leaves early
Split the lodging by night, and each night among the people who were there.
An example: five nights at $240
Four friends; Laura leaves after the third night. The first three nights ($720) are split four ways: $180 each. The last two ($480) are split three ways: $160 each.
| Who | Nights 1 to 3 | Nights 4 and 5 | Share |
|---|---|---|---|
| Laura | $180 | — | $180 |
| Ana | $180 | $160 | $340 |
| Luis | $180 | $160 | $340 |
| Diana | $180 | $160 | $340 |
| Total | $720 | $480 | $1,200 |
Activities not everyone joins
The tour, the scuba dive or the special dinner is split only among the people who went.
Costs in another currency
Log the cost in the currency you paid it in, along with that day’s exchange rate. For example, a tour that cost 1,800 Mexican pesos, at 18 pesos to the dollar, comes to $100. That way the final account is in a single currency and matches what actually came out of each person’s pocket.
During the trip: log it the same day
The most common mistake is leaving everything for the end, when nobody remembers who paid for gas. Log each cost the same day, with who paid it and who it’s split among. Keep the receipts for big costs.
At the end: settle up with few payments
For each person (or family): what they paid minus their share. Anyone with a positive balance gets paid; anyone with a negative balance pays. Ideally, simplify the debts so there are only a few transfers: if Ana owes Luis and Luis owes Diana, sometimes it’s enough for Ana to pay Diana directly.
Do it in Divall
A Vacation account in Divall has all of this: each cost with its date and who paid; it’s split “Among everyone; kids pay half”, “Per group, equal parts” or among “Only some people”; groups that pay together settle as a single debt, and costs in another currency are logged with their rate. At the end, Divall tells you who pays whom. Vacation is part of Divall Pro.
Frequently asked questions
Do kids pay on a group trip?
It depends on what the group agrees. A common way is for them to pay half of what an adult pays for lodging and food, and nothing for what they don’t use.
Is a shared fund better?
It works for small day-to-day costs. For big costs, or when not everyone uses the same things, it’s fairer for each person to pay and settle up at the end.
Which exchange rate should I use?
The one from the day the cost was paid, ideally the rate your bank or the exchange office charged. That way the account reflects what each person actually paid.