# How to figure out who owes who after shared expenses

Canonical URL: https://www.evenoutapp.com/guides/who-owes-who
Updated: 2026-10-06

To figure out who owes who, add up everything paid, divide by the number of people to get each fair share, then subtract that share from what each person paid. A positive result means you are owed, a negative one means you owe. Match a person who owes with a person who is owed until every balance reaches zero.

Key points:
- A person's net balance is what they paid minus their fair share. Positive means owed money, negative means owes money.
- All net balances add up to zero. If yours do not, an expense is missing or mistyped.
- Paying from net balances needs at most one fewer payment than there are people. Four friends need 3 payments, not 6.
- With an unequal split, use each person's real share of every expense instead of total divided by headcount.

## How do you figure out who owes who?

Work out one net balance for each person, then pay the balances off. A net balance is what someone paid minus what they should have paid. You never need to track who owes whom expense by expense.

1. **List every shared expense** with its amount and who paid it.
2. **Add the amounts** to get the total.
3. **Divide by the number of people sharing.** That is each person's fair share when everything is split equally.
4. **Subtract the fair share from what each person paid.** Positive means they are owed that much. Negative means they owe it.
5. **Add up all the net balances.** The sum has to be exactly zero, because every dollar someone owes is a dollar someone is owed.
6. **Make payments.** Pick one person who owes and one who is owed. The debtor pays the smaller of the two amounts, which clears at least one of them. Repeat until everyone is at zero.

Each payment clears at least one person and the last one clears two. That is why a group of N people never needs more than N minus 1 payments.

## Worked example: four people and five expenses

Say Ana, Ben, Cy and Dee share a cabin weekend and pay for different things:

- Ana paid $60 for groceries and $80 for dinner.
- Ben paid $40 for fuel.
- Cy paid $200 for the cabin.
- Dee paid $20 for snacks.

The total is $400. With four people, each fair share is $100.

| Person | Paid | Fair share | Net balance |
|---|---|---|---|
| Ana | $140 | $100 | Owed $40 |
| Ben | $40 | $100 | Owes $60 |
| Cy | $200 | $100 | Owed $100 |
| Dee | $20 | $100 | Owes $80 |

The zero check: Ana and Cy are owed $40 + $100 = $140 between them, and Ben and Dee owe $60 + $80 = $140. The two sides match.

Now make payments, each one clearing at least one person:

1. Ben pays Cy $60. Ben is done, and Cy is still owed $40.
2. Dee pays Cy $40. Cy is done, and Dee still owes $40.
3. Dee pays Ana $40. Everyone is at zero.

That is three payments for $140 in total.

## Why use net balances instead of pair-by-pair debts?

Pair-by-pair tracking produces more payments and moves more money. Every expense creates a small debt from each of the other three people to whoever paid. After you net each pair against itself, the cabin weekend still leaves six debts:

- Ben owes Ana $25.
- Dee owes Ana $30.
- Ana owes Cy $15.
- Ben owes Cy $40.
- Dee owes Cy $45.
- Dee owes Ben $5.

| Method | Payments | Money moved |
|---|---|---|
| Pair by pair | 6 | $160 |
| Net balances | 3 | $140 |

Both methods leave everyone in the same place. Ana ends up $40 ahead, Cy $100 ahead, and Ben and Dee $60 and $80 out. The net method gets there with half the payments, and nobody both sends and receives money.

## What if the split is not equal?

Replace the equal fair share with each person's real share, which is the sum of their portion of every expense. Say Cy skipped the $60 groceries, so only Ana, Ben and Dee split them at $20 each. Everything else stays equal.

Ana's share is $20 + $20 + $10 + $50 + $5 = $105. Ben's and Dee's are also $105. Cy's is $85, because he is not in the groceries. The shares add to $400, matching the total.

The new net balances are Ana owed $35 ($140 minus $105), Ben owes $65, Cy owed $115 ($200 minus $85) and Dee owes $85. The zero check still works: $35 + $115 = $150, and $65 + $85 = $150.

## How do you check the answer?

Two quick checks catch most mistakes. First, the net balances must sum to zero. Second, each person's payments must equal their net balance: Ben sends $60 in total, Dee sends $80, Cy receives $100 and Ana receives $40.

For a stronger proof, add what each person sent to their "Paid" figure and subtract what they received. Ben is $40 + $60 = $100, Dee is $20 + $80 = $100, Cy is $200 minus $100 = $100 and Ana is $140 minus $40 = $100. Everyone lands on the fair share.

## How does EvenOut work this out?

EvenOut keeps the balances for you, but it shows them from your own seat rather than as a full grid. On a group page your net appears in large type ("$60" with "you owe in this group"), and the "Balances" block lists your balance with each person, such as "You owe Cy" or "Dee owes you". It does not list everyone's balance with everyone else, so the table above is still the way to check the whole group at once.

Each expense has one payer and a split you choose, so Ana's groceries and dinner are two expenses. With "Simplify debts" on, which is the default, EvenOut reshuffles who pays whom so the group takes the fewest payments. The exact pairing can differ from the one above, but each person's net stays the same.

## What should you do next?

Put your own numbers into the [who owes who calculator](https://www.evenoutapp.com/tools/who-owes-who-calculator) to see every balance and a payment list. To keep the number of payments down in a bigger group, read [how simplify debts works](https://www.evenoutapp.com/guides/how-simplify-debts-works). When the payments are made, how settling up works covers recording them. A debt noted but not yet paid is an [IOU](https://www.evenoutapp.com/glossary/iou), and the [formula for splitting bills](https://www.evenoutapp.com/guides/formula-for-splitting-bills) covers the arithmetic behind each fair share.

## Frequently asked questions

### What if the total does not divide evenly between people?

Give the extra cents to different people so the shares still add up to the total. $100.00 among 3 people is $33.34, $33.33 and $33.33. EvenOut also shares remainder cents out, so no cent is lost.

### Does it matter who pays whom if the net balances come out the same?

No. Any set of payments that leaves every net balance at zero is a correct settlement. Pick the set with the fewest payments, or the one that avoids sending money between two people who rarely see each other.

### How do I count a payment someone already made?

Treat it as money moving between two people. If Ben already sent Cy $20, Ben's net balance goes up by $20 (he owes less) and Cy's goes down by $20 (he is owed less). Then read the balances again.