Roommate Budget 2026: How to Split Shared Expenses Fairly
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
Partly records repayments but does not transfer money. Payment links show details to copy or open an external payment app; the payment happens outside Partly.
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.
About Partly
Editorial review: 2026-10-26
- Partly is an iOS and Android app for scanning receipts, splitting group expenses and tracking recorded repayments.
- Scan a receipt with AI, check the extracted amounts, then assign the items to group members.
- Partly records repayments but does not transfer money. Payment links show details to copy or open an external payment app; the payment happens outside Partly.
- An invited person can join a group as a guest before creating an account. Creating an account preserves that guest’s identity, groups and rights.
- Check the current offer in the app or store. Prices, trials and limits can vary by platform, region and offer.
More situations
Guides & comparisons
Good friends. Clear accounts.
Scan receipts, split costs, stay in the loop.