Split Rent with Roommates.Free, Fair, and Drama-Free.
Split rent, utilities, and groceries with roommates — evenly, by room size, or by any share the house agrees on. Set recurring bills up once and FamZam splits them every month, tracks who owes what, and settles up over UPI or any payment app. No ads, no subscription, no daily expense limit.
Rent split calculator
Split rent between roommates — evenly, by room size, or by any share you agree on.
Give someone 2 shares and they pay double. Good for bigger rooms or longer stays.
Enter a monthly rent to see the split.
- Person 1$0.00
- Person 2$0.00
- Person 3$0.00
- Monthly rent
- $0.00
- Total
- $0.00
Rent is due every month.
Set rent and utilities up once in FamZam and it splits them for you every month, tracks who has paid, and reminds whoever hasn’t.
Why roommates choose FamZam
Recurring rent and utilities
Set rent, electricity, internet, and water up once and FamZam splits them automatically every month. A four-person house with seven bills saves 84 manual entries a year.
Equal, unequal, or by share
Bigger room pays more, box room pays less, couple counts as 1.6. Equal, unequal, percentage and share-based splits are all supported and all visible to the whole house.
No cap on how much you add
A busy household generates 40+ expenses a month. FamZam has no daily entry limit, no ads, and no paid tier — so the app never stops you mid-month.
How to split rent with roommates
- 1
Create a household group
Add your roommates in seconds. Everyone sees the same balances — nobody becomes the household accountant.
- 2
Set the rent split and the shares
Enter the rent and give each person a share: 1 for a standard room, 1.3 for the big one with the en suite, 0.8 for the box room, 1.6 for a couple.
- 3
Add the recurring bills once
Electricity, gas, water, internet, council tax. FamZam repeats them every month so nobody has to remember.
- 4
Settle up on the same date each month
See exactly who owes whom and settle over UPI or any payment app. A fixed settle-up day stops balances growing into a conversation.
Splitting rent fairly
Below 10% difference, just split evenly
If every bedroom is within about 10% of the same size and nobody has a private bathroom, split evenly. Precision below that buys a few pounds and costs a conversation that gets remembered.
Use square footage plus common area
Measure each bedroom, divide the shared space equally, and add the two. On £1,800 with rooms of 150, 120 and 90 sq ft, that’s £682 / £600 / £518 — and you can see exactly what the box room was being overcharged.
Price the features, not just the floor
An en suite is worth roughly 8–15% above what square footage suggests. A windowless room is worth 10–20% less. Agree the premiums before anyone moves in — most rent arguments are about a premium that was never negotiated.
Average the energy bills across the year
Estimate the annual total and collect a twelfth each month. It prevents a January shock and means whoever moves out in spring has paid a fair share of the winter.
The cases that cause actual arguments
A couple sharing one bedroom
Count them as 1.5–1.7 shares, not 1 or 2. They use one bedroom’s worth of private space but two people’s worth of kitchen, hot water, and sofa. Allocate the bedroom once by size and give them two shares of the common area — that lands in the right range and, more usefully, gives a reason.
Someone moves in mid-month
Charge nights occupied ÷ nights in the month. Moving in on the 12th of a 30-day month is 19 nights, so 63% of a full share. Count from when their belongings arrive.
One roommate travels constantly
They still pay full rent — they are renting the room, not the nights. Utilities are a fair thing to reduce, since those are actual consumption.
The rent goes up
Apply the increase proportionally, using the ratios you already agreed. A flat “everyone pays £50 more” quietly re-splits the flat in favour of the biggest room every time.
Whose name goes on the utility account?
Rotate it. The account holder is legally liable for the entire bill, not their share, and unpaid bills can affect their credit file. Everyone should pay before the bill is due, never after.
Frequently Asked Questions
What is the best free app to split rent with roommates?
FamZam is free with no ads, no subscription, and no daily expense limit. It supports recurring rent and utility splits, share-based splitting for unequal rooms, and settlement over UPI or any payment app, with balances visible to everyone in the house.
How do you split rent fairly when the rooms are different sizes?
Measure each bedroom, divide the common area equally among everyone, and add each person’s bedroom to their common-area share. Charge that proportion of the rent. If the largest and smallest rooms are within about 10% of each other, split evenly instead.
How much more should a couple pay when sharing a room?
Between 1.5 and 1.7 shares. They occupy one bedroom but use two people’s worth of utilities, kitchen, and living space. For utilities specifically, always count a couple as two people.
Can I set up rent to split automatically every month?
Yes. Add rent and each recurring bill once in FamZam and it splits them on schedule every month, tracks who has paid, and reminds whoever hasn’t — so nobody re-enters the same seven bills twelve times a year.
How do you charge rent for someone moving in mid-month?
Nights occupied divided by nights in the month, applied to their full share. Someone arriving on the 12th of a 30-day month pays about 63%. Do the same in reverse when someone leaves, counting the nights their belongings are still there.
Is there a limit on how many expenses roommates can add?
Not in FamZam. There is no daily expense cap and no paid tier, which matters for a shared house — rent, four utility bills, a grocery run and a shared delivery at the start of the month is enough to hit a daily limit on the first day.