Group trip expenses calculator: who owes whom
Quick answer
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.
On this page
Fair share per person $387.50
Total spent by the group $1,550
Person 1 is owed $612.50
Person 2 owes $87.50
Person 3 owes $247.50
Person 4 owes $277.50
Person 5 (not in the group) $0.00
Person 6 (not in the group) $0.00
Payments needed, at most 3
Show the formula
- Total spent = everything the people paid, added together
- Fair share = total spent ÷ number of people, with any leftover cent handed to the first people
- Balance for each person = what they paid minus their fair share
- A positive balance means the group owes that person that amount; a negative balance means that person owes the group
- All the positive balances add up to exactly the same amount as all the negative balances
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 has more worked examples, and the 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 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 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. The 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
Checked October 6, 2026.
- Splitwise Help: What is Splitwise Pro?
- Splitwise Help: Why am I seeing an expense limit?
- Splitwise Help: Managing a group with multiple currencies
Keep reading
- Calculator Trip cost per person calculator, with cost per night Enter lodging, transport, food, activities and other costs, plus people and nights, to see the cost per person and per night in cents that add up.
- Guide How to split family vacation costs Splitting a trip between families: count kids as shares, split food by headcount or by item, and keep each family's own flights out. Worked $3,000 house.
- Template Group trip expense spreadsheet (printable) A printable group trip expense spreadsheet: an expense log and a settle-up block, plain-words formulas for Excel or Sheets, and a filled two-currency example.
- Comparison Best apps to split trip expenses in 2027 Seven apps compared for one trip: what each costs, whether friends can join without installing, offline use, currencies and daily expense caps.
- Guide How simplify debts works, with worked examples Simplify debts cuts the payments a group needs without changing anyone's total. Six IOUs worth $105 become 3 payments worth $50, with the arithmetic shown.
- Guide Splitwise daily expense limit: 4 a day, and what to do about it Splitwise's free plan caps you at 4 expenses a day. See what the limit means, four ways to work with it, and how to move a group to an app with no daily limit.