How to split rent fairly between flatmates

Rent is the biggest number in a shared home, and it is the one people feel most strongly about. A few rials a month do not sound like much. Over a year, they become a quiet grudge. This guide shows five ways to divide the rent, puts them side by side on one real flat, and covers the awkward cases: a couple in one room, the deposit, and a flatmate who leaves halfway through the month.

There is no single correct answer. A fair split is one that everyone agrees to before they move in, and that they can still explain a year later. The methods below give you a clear way to start that conversation.

The example flat

The rent is OMR 600.000 a month. There are three bedrooms of 16, 12, 9 square metres. The kitchen, living room and hall are shared. The flatmates agree that about 45% of the rent pays for that shared space, and the rest pays for the bedrooms.

Every figure on this page is calculated in minor units (baisa), with whole numbers only. Any leftover baisa goes to one room by a fixed rule, so each column adds up to the rent exactly. Nothing is rounded away and nothing is invented.

Four methods on one flat

Look at Room C. An equal split charges it OMR 200.000. A pure area split drops it to OMR 145.946. The two-pass method lands in between, at OMR 170.270. The gap between the methods is the whole argument, and now everyone can see it in numbers.

Method 1: split the rent equally

Divide the rent by the number of people. It is simple and it needs no measuring. It is fair when the rooms are close in size and quality. When one room is clearly better, an equal split asks the person in the small room to pay for space they cannot use. Use it when the rooms are similar, or when everyone agrees that simplicity is worth more than a small difference.

Method 2: split rent by room size

Measure each bedroom and divide the rent in proportion to floor area. Room A is 16 of 37 square metres, so it pays 16/37 of the rent. This feels precise, but it has a flaw. It treats the kitchen and living room as if they belong to the biggest bedroom. Everyone uses the kitchen the same amount, whatever the size of their own room. So a pure area split often charges the large room too much and the small room too little.

Method 3: the two-pass split

This is the fair way to split rent with uneven rooms in most flats. It fixes the flaw in the area method by paying for the space in two parts.

1. Agree the shared part. Decide what share of the rent pays for communal space. Here it is 45%, which is OMR 270.000.
2. Split the shared part equally. Each person pays OMR 90.000 for the kitchen, living room and hall.
3. Split the private part by area. The remaining OMR 330.000 is divided in proportion to bedroom size.
4. Add the two parts. Room A pays OMR 232.703, Room B pays OMR 197.027 and Room C pays OMR 170.270.

A simple way to choose the shared percentage: compare the floor area of the communal rooms with the total area of the flat. If you cannot measure, 40% to 50% is a common starting point. Try your own numbers in the rent split calculator.

Method 4: feature points for bathrooms, balconies and parking

Size is not the only thing that makes a room better. A private bathroom, a balcony or a parking space has real value. The feature-points method keeps the two-pass structure and adds agreed points to each room's area before the private part is split.

• Room A has a private bathroom, worth 4 points. Its weight goes from 16 to 20.
• Room B has a balcony, worth 2 points. Its weight goes from 12 to 14.
• Room C has a parking space, worth 3 points. Its weight goes from 9 to 12.

The private OMR 330.000 is then divided by those weights. Room C now pays OMR 176.087, a little more than in the plain two-pass split, because the parking space is part of what it gets. The points are a group decision, not a formula. Agree them out loud, write them down, and do not change them every month. You can also give negative points to a room with a problem, such as road noise or no window.

Method 5: split rent by income

Some households split rent in proportion to what each person earns. Take two flatmates with a rent of OMR 500.000. One takes home 1500 a month and the other 900. By income, the first pays OMR 312.500 and the second pays OMR 187.500.

This works well for couples and close family, where money is already shared in other ways. It has trade-offs between friends. People must share their income, which many do not want to do. A raise for one person changes everyone's rent. And the person who earns more may start to feel they should get the better room, which mixes two questions that are easier to keep apart. If you use it, agree when you will review the numbers, for example once a year.

The bid method

Some groups run a small auction. Each person writes down what they would pay for each room, so that each person's bids add up to the full rent. The group then gives each room to the person who values it most, and adjusts prices so the total still matches the rent. Supporters like that it uses each person's own view of value, not a tape measure. Critics say it rewards the person who is most comfortable with bargaining, and it can feel cold between friends. It works best when everyone understands the rules before the first bid.

A couple sharing one room

Two people in one room use the bedroom like one person, but they use the kitchen, bathroom and living room like two. A fair split follows that. Count heads for the shared part and count area for the private part. In the example flat with a couple in Room A, the shared OMR 270.000 is split 2:1:1. The couple pay OMR 277.703 together, Room B pays OMR 174.527 and Room C pays OMR 147.770. The total is still OMR 600.000.

Deposits: who holds them and how to split them

Split the deposit in the same proportion as the rent. If Room A pays the most rent, it also puts in the most deposit. With a one-month deposit in the two-pass example, Room A puts in OMR 232.703, Room B OMR 197.027 and Room C OMR 170.270. When the deposit comes back, return it in the same shares, less any agreed deductions for damage in a specific room.

Usually the person on the lease pays the deposit to the landlord and collects each share from the others. Write down who paid what and when. When someone leaves early, the new flatmate normally buys their share of the deposit from them directly, so the landlord does not need to be involved.

Someone moves out mid-month: prorate by days

Charge each person for the days they lived in the room. Use the real number of days in that month, not an average.

1. Take the room's monthly rent: OMR 170.270 for Room C in the two-pass split.
2. Count the days: the flatmate stayed 12 of 30 days, and the room was empty or used by a new person for 18.
3. Split the room's rent by those days: the leaver pays OMR 68.108 and the remaining OMR 102.162 belongs to the new flatmate, or to the group if the room is empty.

Agree in advance who pays for an empty room. A common rule is that the leaver pays until the end of their notice period, and the group shares the cost after that. For the rest of the shared bills that month, see the guide on splitting expenses with roommates.

Write it down

The method matters less than the record. Before anyone moves in, write one short note that lists the method, the shared percentage, any feature points, the deposit shares and the move-out rule. Everyone reads it and agrees. When someone new joins, they read it too.

Splitty keeps that record in one place. Create a group for the flat, add the rent each month, and enter each person's exact amount as a custom split, so the numbers match the method you agreed. Everyone sees the same balances, and the settle-up screen suggests a short list of payments that squares the house, aiming for one payment per person. Flatmates can join from an invite link, and the app works in 52 languages. For one-off bills, the bill split calculator handles weighted shares without an account.