Person 1
Group Expense Split Calculator
Enter the total and how much each person paid to see the fair share and who pays whom.
Group bill
Who paid how much
Person 2
Your data is not stored. Everything runs in your browser.
Your result
0.0/person
Fair share per person
Who pays whom
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Assumes everyone owes the same share of the total you enter. It does not handle itemized or proportional splits.
What this solves
When several people share one expense but did not all pay the same upfront, you need to know who owes whom net. The tool assumes an equal split of the total and shows net balances plus a compact way to settle with a few transfers.
Why balances and suggested transfers?
In a group you rarely need everyone to pay everyone. Who paid extra should receive from who paid less. Suggested transfers are one practical way to zero balances without chaos.
When it fits
Equal splits: rent share, group gift, pooled dinner. It does not handle “they ate more” or different shares per person unless you adjust numbers yourself.
How to read the output
Two main parts:
- Balances: negative means that person should pay others on net; positive means others should pay them, under equal share logic.
- Suggested transfers: one possible (not unique) path with fewer movements; the net amounts are what matter.
Tips
- Double-check the expense total before trusting balances.
- If paid amounts go over or under the total, the warning shows the difference. Fair share still uses the total you typed.
- Names are optional but make the transfer lines easier to read.
Limitations
Equal split only. No proportional items, tips by share, or multiple currencies. Unequal shares would need different logic or manual adjustment.
Method
Fair share = total ÷ number of people. Each balance = amount paid − fair share. Suggested transfers use a greedy match of debtors to creditors until balances net to zero (standard simplification for small groups).
fair_share = total / n
balance_i = paid_i − fair_share
Equal split and net balances are basic double-entry style arithmetic; debt simplification follows common “minimal cash flow” greedy pairing used in split-bill tools.
FAQ
Are suggested transfers the only way to settle?
No. Many payment patterns can clear the same balances. The tool offers one simple short list. What matters is everyone ends at zero after agreed transfers.
Why warn if payments don’t match the total?
Fair share still uses the total you entered. If payments differ, the warning says how much is over or short. Someone may have paid ahead or the total may be wrong.
What if shares aren’t equal?
This tool only does equal split. Unequal shares need different weights per person.