Rent. Utilities. The mystery repair. Sorted.
Rent, water, internet, the random plumber visit. The One Bill keeps the household ledger tidy so the end of the month never gets weird.
No credit card required. Chasing the landlord still on you.
Three people, one $2,400 apartment, and one bedroom that is clearly the best: bigger, quieter, with its own bathroom. Then the internet, power and water bills show up, and the power bill nearly doubles every July.
The easy answer is to split everything in three. It holds for about two months. Then the two people in the small rooms start doing math in the shower, and the one with the big room feels lucky right up until somebody brings it up. It is easier to do the math once, together, before anyone unpacks.
Even split vs by room size
An even split is fair when the rooms are the same. Here they are not: Mia’s room is about twice the size of the other two and has its own bathroom. Charge all three the same $800 and Theo and Jun pay, every month, for a bathroom they will never use.
Our favorite fix is half and half. Half the rent pays for the space you all share (kitchen, living room, the hallway nobody cleans), so split that half evenly: $1,200, or $400 each. The other half pays for the bedrooms, so split it by size. Mia’s room counts as two shares and each small room as one, so she covers $600 of it and Theo and Jun $300 each. That makes Mia’s rent $1,000 and theirs $700. The exact shares matter less than agreeing on them once, out loud, so they stop being a monthly conversation.
Three roommates, one month, $2,640
Rent $2,400: half split evenly ($400 each), half by room size (Mia’s room counts twice, $600; Theo and Jun $300 each). Internet ($60), power ($135) and water ($45) are split three ways, $80 each.
| Person | Rent by room | Utilities | Total |
|---|---|---|---|
| MiaBig room · own bathroom | $1,000.00 | $80.00 | $1,080.00 |
| TheoSmall room | $700.00 | $80.00 | $780.00 |
| JunSmall room | $700.00 | $80.00 | $780.00 |
| Everyone | $2,400.00 | $240.00 | $2,640.00 |
Split everything evenly and everyone pays $880, so Theo and Jun each put $100 a month toward a bathroom they never use. Split by room, they don’t.
Utilities that change every month
Rent stays put. Utilities don’t. The internet is a flat $60 and water hovers around $45, but power was $70 in April and $135 in July, once the air conditioning came on. A fixed monthly amount per person sounds tidy, until someone overpays all spring and underpays all summer, and that someone has opinions.
So split the real bill, every month, when it arrives. We split utilities evenly even when the rent is not: everyone uses the Wi-Fi and the shower, and timing who ran the air conditioning longest is a quick way to end a friendship. The one exception is obvious. If someone works from home all day with the heater on, agree on a small fixed extra for them and move on.
The mystery repair
Every apartment has one. The sink drains slower and slower until it stops, and a plumber charges $180 to pull out something nobody will admit is theirs. Or the microwave dies the night before a party. These costs come once, out of nowhere, and usually land on whoever happened to be home.
Split a repair like the utilities, evenly, $60 each, and add it to that month’s bill as one more line so it does not vanish into the chaos. If it is clearly one person’s doing, they usually offer to cover it. If they don’t, the plumber’s photo of what was in the drain tends to settle the matter.
One monthly household bill in The One Bill
Start a bill for the month and share the link with your roommates with edit access. Add the rent as one line, tap all three of you and type each person’s share: $1,000, $700 and $700. Add each utility bill when it arrives and tap everyone for an even split. On every line, pick whoever actually paid it.
At the end of the month, The One Bill shows each person’s balance and the payments that settle it. In the example above, Mia paid the $2,400 rent, Theo paid power and water ($180) and Jun paid the internet ($60). That leaves Mia $1,320 ahead, Theo $600 behind and Jun $720 behind, so two payments close the month: Jun sends Mia $720 and Theo sends Mia $600. Pay each other back however you like: The One Bill keeps track of who owes what, it never touches the money. Next month, start a fresh bill. The rent shares stay the same; only the utilities need new numbers.
Try one receipt. Watch the split come to life.
Snap a receipt and let our AI turn it into a fair, item-by-item split — no typing, no receipt detective work, and no making the salad friend pay for the lobster.
Snap the evidence
Restaurant check, grocery haul, party supplies — take one clear photo before the receipt vanishes into a pocket forever.
Hand it to the AI scribe
Upload the photo and our AI reads the receipt, finds the line items, and turns that crumpled paper trail into a tidy list.
Put every bite where it belongs
Tap the person who had each item — or choose two when they shared. The One Bill divides every line fairly and keeps the final tally clear.
That's it: photo in, fair split out. Snap the receipt and let it do the typing.
Enjoy your friends.
Stop worrying about the bills.
From taco nights to month-long trips, every shared expense fits right in.
I used to lose friends over twelve bucks. Now I lose them for completely unrelated reasons.
Jack Hard Rock
Beer Drinking Legend
