# Group trip expenses calculator: who owes whom

Canonical URL: https://www.evenoutapp.com/tools/group-trip-expenses-calculator
Updated: 2026-10-06

Add up everything the group paid, divide by the number of people to get the fair share, then subtract that share from what each person paid. A positive result means the group owes that person, and a negative one means they owe the group. In the example below, four people who paid $1,000, $300, $140 and $110 each have a fair share of $387.50.

Key points:
- Balance = what you paid minus the fair share (total spent ÷ people). Positive means you are owed, negative means you owe.
- The balances owed always equal the balances owing, so the money always has somewhere to go.
- Settling takes at most one payment fewer than the number of people who are not already even.
- This calculator splits equally. Unequal shares are covered on the family vacation and couples pages.

## What the calculator does

It turns a pile of receipts into one balance per person. Add up each person's receipts into a single amount, enter how many people share the trip, and the calculator finds the fair share and shows who is owed and who owes. Count everyone in the group, including anyone who paid nothing, because they still owe a share.

## Worked example: four people and five receipts

Say four people share a weekend. Person 1 paid the $1,000 house rental. Person 2 paid $210 for groceries and $90 for ferry tickets, $300 together. Person 3 paid a $140 dinner and Person 4 paid a $110 boat rental, five receipts in all.

The group spent $1,000 + $300 + $140 + $110 = $1,550, so the fair share is $1,550 ÷ 4 = $387.50.

| Person | Paid | Fair share | Balance |
|---|---|---|---|
| Person 1 | $1,000.00 | $387.50 | Owed $612.50 |
| Person 2 | $300.00 | $387.50 | Owes $87.50 |
| Person 3 | $140.00 | $387.50 | Owes $247.50 |
| Person 4 | $110.00 | $387.50 | Owes $277.50 |

## Why the balances always cancel out

The amounts owed always equal the amounts owing, because everyone's fair shares add up to exactly what everyone paid. In the example, Person 1 is owed $612.50 and the other three owe $87.50 + $247.50 + $277.50 = $612.50. If you work it by hand and the two sides differ, an amount was added or copied wrongly.

The same holds when the total does not divide evenly. If one of three people pays a $100 bill, the shares are $33.34, $33.33 and $33.33, the payer is owed $66.66, and the other two owe $33.33 each, which is $66.66 together.

## How many payments does it take

It takes at most one fewer payment than the number of people who are not already even. Each payment can be chosen to settle at least one person completely, and the last payment settles two. In the example, Persons 2, 3 and 4 each pay Person 1, which is three payments for four people.

Take a trip where two people are owed $60 and $40 and two people owe $70 and $30. That also takes three payments: the person who owes $70 pays $60 to the first and $10 to the second, and the person who owes $30 pays the second. EvenOut's Simplify debts setting does this inside a group. It reshuffles who pays whom so it takes the fewest payments, and everyone's total stays exactly the same. It is on by default for each group and tagged "Recommended". [How simplify debts works](https://www.evenoutapp.com/guides/how-simplify-debts-works) has more worked examples, and the [who owes who calculator](https://www.evenoutapp.com/tools/who-owes-who-calculator) writes out the list of payments.

## Splitting as you go instead of at the end

A calculator suits a single tally. If the receipts pile up over a week, an app that keeps the running balance saves the sum at the end. As of October 2026, Splitwise's free plan allows up to 4 expenses each day, and [how the Splitwise daily limit works](https://www.evenoutapp.com/guides/splitwise-daily-limit) covers what to do when a busy day hits it. EvenOut has no daily expense limit on the free plan. Its group page shows your own balance with each person, such as "You owe Sarah", and "Settle up" records the payment without moving any money.

## Unequal shares

The calculator splits equally. When people skip an activity or share a room, [how to split family vacation costs](https://www.evenoutapp.com/guides/how-to-split-family-vacation-costs) and how couples split travel expenses cover the unequal cases. In EvenOut the split method is chosen for each expense, so one group can mix equal, exact amount, percent and share splits.

## Common mistakes

- **Adding receipts to the wrong person.** Total each person's receipts before entering them.
- **Entering a shared receipt under several people.** Enter the full amount once, under the person who paid it.
- **Rounding each receipt.** Enter amounts to the cent.

To plan the total before anyone pays, use the [trip cost per person calculator](https://www.evenoutapp.com/tools/trip-cost-per-person-calculator). The [group trip expense spreadsheet](https://www.evenoutapp.com/templates/group-trip-expense-spreadsheet) is a printable version of the same tally.

## Frequently asked questions

### Can I use this when people paid in different currencies?

Convert every amount into one currency first, because the calculator adds the numbers as they are. Apps differ on this. EvenOut keeps each expense in its own currency with separate balances per currency and does not convert. As of October 2026, Splitwise lists currency conversion as a Pro feature and keeps balances separate per currency until you convert.

### Does the calculator say who should pay whom?

It gives balances, not a list of payments. Any set of payments that brings every balance to zero works. A simple rule is that the person who owes the most pays the person who is owed the most, then you repeat with what is left, which keeps the payments to one fewer than the number of people who are not already even.

### How do I check the result by hand?

Add the amounts owed and the amounts owing, and they must match to the cent. Then multiply the fair share by the number of people, which should give the total spent. When the total does not divide evenly, the fair share shown is rounded down, so the product comes out a few cents under the total.

## Sources

- Splitwise Help: What is Splitwise Pro?
- Splitwise Help: Why am I seeing an expense limit?
- Splitwise Help: Managing a group with multiple currencies