Roommate Budget 2026: How to Split Shared Expenses Fairly | Partly
How to build a roommate budget: rent, utilities, groceries. Fair split rules, recurring costs and the best app vs spreadsheet for flatshares in 2026.
A roommate budget is not a spreadsheet hobby — it is the system that keeps rent, utilities and groceries fair for months. Without rules, one person becomes the unpaid accountant and small debts turn into friction.
What belongs in a shared flat budget
Include: rent (or each share), utilities (electricity, gas, water, internet), cleaning supplies and agreed groceries. Keep personal subscriptions (Netflix solo, gym) out of the shared pot unless everyone uses them.
Fair split rules that actually stick
Equal split works for similar rooms. Room-size or income-adjusted splits work for unequal bedrooms. For groceries, scan the receipt and assign shared staples to everyone, personal items to one person — AI line-item scan makes this painless.
Spreadsheet vs app for coliving
Spreadsheets lose photo evidence, break when someone pays in another currency, and create arguments about who typed what. A persistent group in Partly keeps one running balance for the whole lease, with AI grocery scan and payment requests via SEPA, PayPal, Revolut, Lydia or Bizum.
Monthly ritual (15 minutes)
1) Agree what is shared on day one. 2) Add rent and utilities as recurring. 3) Scan grocery receipts the same day. 4) Settle on a fixed date each month. 5) Send payment links — no IBAN copy-paste on WhatsApp.
FAQ
What is the best app for a roommate budget in 2026? Partly for persistent groups plus AI grocery scan. How do you split rent fairly? Add rent as a recurring expense, split by room size or equally, settle monthly. Do all roommates need the app? No — recipients can pay from a browser link.
Ready to split smarter?
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