Bill Split & Expense Settlement Studio
Stop guessing after a trip or dinner. Add people and payments, then get a clear list of who pays whom. Equal, weighted, percentage, or custom shares — all private in your browser.
How do you want to split?
Pick a mode and finish in 3 steps — mobile-friendly.
Names, amounts, and settlement data stay in your browser and are never sent to a server. · locale=en
What is Bill Split & Expense Settlement Studio?
Bill Split & Expense Settlement Studio is a free, registration-free calculator for shared expenses. Unlike a simple “total ÷ people” widget, it tracks multiple payers, partial shares, and produces settlement transfers so everyone ends even.
Use it for meals, trips, roommate utilities, events, and group purchases. Amounts stay as integer minor units to avoid floating-point drift. Everything runs locally with optional localStorage autosave and URL-fragment sharing — no servers see your names or amounts.
From payments to “who pays whom”
Enter who paid each bill and who should share it. The studio computes net balances and suggests a compact set of transfers.
Copy a chat-ready summary for LINE, WhatsApp, or email in one tap.
Flexible splits that match real life
Equal, fixed amounts, percentages, or weights (adult / student / child). Choose participants per expense — hotel for everyone, taxi for three.
Rounding modes and remainder policies keep yen and cents consistent without mysterious “calculation errors”.
Travel, dinner, and roommate presets
Quick Start presets seed categories and tone without locking you in. Load sample Tokyo trip data to see a full settlement in seconds.
Studio mode adds dashboard, summary charts, CSV/JSON backup, PNG/SVG export, print, and QR share via Solasu’s existing QR engine.
Zero Upload privacy
No accounts, no expense APIs, no live FX feeds. Mixed currencies use rates you type yourself.
Share links use the URL fragment only. You’ll see a clear warning before copying a URL that may contain names and amounts.
FAQ
Is this just dividing a total by the number of people?
No. It supports multiple expenses, different payers, partial participants, fixed/percentage/weight splits, and produces settlement transfers between people.
Are my names or amounts uploaded?
No. All calculation and storage happen in your browser. Solasu does not receive your expense data.
Can I use it for travel or roommate bills?
Yes. Presets help for trips, meals, and shared housing, and you can customize categories and currencies.
How does URL sharing work?
Event data is encoded into the #fragment of the URL and decoded locally on the recipient’s device. Share only with trusted people.
Does it minimize the number of transfers?
It uses a greedy pairing of debtors and creditors to aim for fewer transfers. This is a practical heuristic, not a proven absolute minimum.