Fairshare Bill Splitter

Split a bill item by item with tax and tip, settle group expenses with the fewest payments, and split rent fairly.

Fairshare Bill Splitter works out who owes who for friends, roommates, and travel groups. Split a restaurant bill by item, with tax, tip, and service charges shared in proportion to what each person ordered. Settle a whole trip's expenses (equal, exact, percentage, or share-based splits) with the fewest possible payments. Split rent by room size, shared space, or income. Every amount is exact to the cent and the shares always add up to the total.

What it does

• Itemized bill splitting: who shared each item, with unequal portions
• Tax, tip, and service charge shared in proportion to each person's pre-tax subtotal; coupons applied before tax
• Largest-remainder rounding, so shares add up to the exact total, plus an optional round-up to whole units
• Group expense settle-up with the fewest payments (exact search up to 18 people with a balance)
• Equal, exact-amount, percentage, and share-based splits per expense; CSV export of payments, balances, and expenses
• Rent split by room size with a shared-space portion, by income, or equally, with per-room adjustments and utilities

Try asking ChatGPT

Limitations

• Calculates only: it does not send payment requests, move money, or store groups between conversations
• One currency per calculation; it does not convert currencies
• Does not read receipt photos by itself; the items must be given as text
• The exact fewest-payments search covers up to 18 people with a non-zero balance; larger groups get at most one payment fewer than the number of people with a balance
• Not financial, tax, or legal advice

Connect

Install Fairshare Bill Splitter from the ChatGPT plugin directory. Developers can connect the MCP endpoint directly: https://bill-splitter.zovo.one/mcp