What the shared expenses splitter is for
When a group shares expenses —a trip, a flat between roommates, a dinner one person covered— people almost never chip in the same amount at the moment. One fronts the hotel, another pays for groceries and a third doesn’t open their wallet that day. Then comes the awkward question: who owes whom, and how much? This tool answers it. You enter each person and what they paid, and it works out the total spent, the fair share per person and each one’s balance: pay more than your share and you are owed money; pay less and you owe.
It is different from a bill splitter. There, a single check is divided into equal parts and everyone pays the same. Here each person has already paid different amounts, and the goal is to even out those differences. Everything runs in your browser: nothing is sent online and no sign-up is required.
How to use the tool
- Pick a currency, or keep the neutral symbol if you only care about the figures.
- Add each person with their name and what they paid. Use “Add person” to add rows and “Remove” to delete them. If someone paid nothing, leave their amount at 0.
- Read the results: the total spent, the fair share per person and a table with each one’s balance. A green balance with a
+sign means they are owed; a red one with a−sign means they owe. - Check “How to settle up”: the tool suggests the minimum payments to leave everyone even (who pays whom and how much).
How it is calculated
The key formula is the individual balance. With N people and adding up what each one paid:
- Total spent = the sum of everything paid.
- Fair share =
Total spent ÷ N. - A person’s balance =
what they paid − fair share.
A positive balance means that person fronted more than their share and the group owes them. A negative one means they paid less than their share and must cover the difference. All the balances always add up to zero, because what some owe is exactly what others are due to receive.
| Person | Paid | Fair share | Balance |
|---|---|---|---|
| Ana | 6000 | 3000 | +3000 |
| Beto | 3000 | 3000 | 0 |
| Caro | 0 | 3000 | −3000 |
Worked example
Three friends share the costs of a weekend. Ana paid 6000, Beto paid 3000 and Caro paid nothing (0).
- Total spent: 6000 + 3000 + 0 = 9000.
- Fair share per person: 9000 ÷ 3 = 3000.
- Ana’s balance: 6000 − 3000 = +3000 (is owed).
- Beto’s balance: 3000 − 3000 = 0 (even).
- Caro’s balance: 0 − 3000 = −3000 (owes).
To settle up, a single payment is enough: Caro pays Ana 3000 and everyone is even.
Another case: on a trip Ana put in 4500, Luis 1500 and Sara 3000. The total is 9000 and the fair share 3000. Ana is at +1500, Sara at 0 and Luis at −1500, so Luis pays Ana 1500.
Frequently asked questions
How is it different from a bill splitter?
A bill splitter takes a single check and divides it into equal parts: everyone pays the same from scratch. The expense splitter starts from the fact that each person already paid different amounts and computes the balance to level those differences out. Use this one when several people fronted money over days or weeks.
What if someone paid nothing?
Nothing special: set their amount to 0. They still have a fair share to cover, so their balance will be negative by that full amount and they appear as a debtor. In the example, Caro paid 0 and owes 3000.
Why do the balances add up to zero?
Because money is neither created nor destroyed in the split: every unit one person overpaid is a unit another underpaid. Adding all the positive and negative balances cancels them out. If it is off by a cent or two, that is only rounding when the amounts are displayed.
Does it include taxes or tips?
No. The tool splits exactly the amounts you type, without adding taxes or tips. If you want them included, add them into what each person paid before entering it. The result is an informative estimate to help you agree, not an accounting document.
Does it work with many people?
Yes. You can add as many rows as you need, and the “How to settle up” section always proposes a short list of payments to leave everyone even with the fewest possible transfers.