Splitting expenses gets messy when everyone pays for different things and the receipts live across chats, notes, and memory. The cleanest system is simple: record costs as they happen, agree on the split rule, and settle the smallest number of balances at the end.
Start with one shared expense list
Use one place for every bill, receipt, and reimbursement. Add the date, payer, amount, and a short note such as dinner, groceries, taxi, or tickets.
Choose the right split rule
Equal splits work for meals, shared stays, and group activities. Unequal splits are better when one person ordered more, stayed fewer nights, or covered a guest.
Settle net balances, not every receipt
Netting balances lets one person pay another once instead of creating many tiny transfers. Review unusual items first so the final payment feels obvious.