Bill Splitter

Problem

For group meals, shared utilities, or multi-day trips, the hard part is not division but tracking who paid for what, who participated in each item, and who absorbs rounding. Bill Splitter handles single-event settlement: it turns itemized expenses into each person's net balance and produces a minimal-transfer “who pays whom” list.

How It Works

Required inputs include participants, item amounts, participation scope per item, and advances made. The skill calculates per-item liability, aggregates each person's total due, subtracts advances, and derives net receivable/payable balances; it then optimizes transfer paths and notes rounding or zero-amount handling.
- Simple split: total amount divided by participants
- Itemized split: drinks, meals, and room costs can use different participants
- Advance tracking: identify who paid first and who owes whom
- Settlement optimization: reduce the number of transfers
Use for one-time bill splits, shared utility settlement, or trip expense reconciliation. Not for long-term bookkeeping, actual payments, expense reimbursement, or equity allocation; results depend only on current input and do not perform financial transactions.