Study Group Cost Splitter

Split study group expenses fairly among all members, including materials, venue rental, food, and other shared costs.

Number of Members

Venue / Room Rental Cost ($)

Shared Materials Cost ($) (textbooks, printouts, stationery)

Food & Beverages Cost ($)

Other Shared Expenses ($)

Amount Already Paid / Contributed ($) (total collected so far)

Number of Sessions This Covers

Total Cost = Venue + Materials + Food + Other

Remaining Balance = max(Total Cost − Already Paid, 0)

Each Person's Fair Share = Total Cost ÷ Number of Members

Each Person Still Owes = Remaining Balance ÷ Number of Members

Cost Per Session (Group) = Total Cost ÷ Number of Sessions

Cost Per Session Per Person = Each Person's Fair Share ÷ Number of Sessions

Surplus = max(Already Paid − Total Cost, 0)

All costs are split equally among members (equal-share model).
If members have unequal usage (e.g., only some use materials), adjust the materials cost to reflect only the shared portion.
"Already Paid" represents the total pooled amount collected from all members combined, not per-person.
A surplus (over-collection) should be refunded or carried forward to the next session.
All monetary values are in the same currency (e.g., USD).
Sessions are assumed to have equal cost distribution across the covered period.
Reference: Equal-share cost splitting is the standard approach recommended by financial fairness literature for groups with uniform participation (Brams & Taylor, Fair Division, Cambridge University Press, 1996).

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