Why this matters
This keeps the system from feeling transactional. One person can pay many fixed bills and still not be “spending more”; they are fronting money for shared costs.
Who owes whom
A clean method for tracking shared expenses, who paid, who owes, and the final balance without keeping score.
Track two facts separately: what the household spent, and who paid the money upfront. Then calculate the net balance instead of sending a payment request for every purchase.
This keeps the system from feeling transactional. One person can pay many fixed bills and still not be “spending more”; they are fronting money for shared costs.
Do not use “who paid” as a proxy for “who consumed.” Those are different facts.
Couplesplit was built around this distinction: spending, payer, split rule, and balance are all visible in one place.