Flatshare rent split calculator
Divide rent and bills between housemates, giving bigger or better rooms a larger share.
Energy, water, broadband and council tax, split equally between everyone.
- Room 1 pays
- £860.00
- Room 2 pays
- £860.00
- Room 3 pays
- £860.00
- Total
- £2,580.00
Splitting rent fairly
An equal split is simplest, but rooms are rarely equal. A good approach is to give each room a score based on size, whether it has an ensuite and how much light and storage it has, then split the rent in proportion to the scores.
Agree the split before anyone signs, and put it in writing. If the tenancy is joint, everyone is normally responsible for the full rent, so make sure you trust your housemates.
Bills and extra costs
Bills such as energy, water and broadband are usually split equally, whatever the room size. Check whether bills are included in the rent, and remember council tax, TV licence and contents insurance.
See the hidden costs guide for the other costs that catch new renters out.
Frequently asked questions
Should the bigger bedroom pay more rent?
Usually yes. Weighting rent by room size or features is a common way to keep a flatshare fair. Use the room scores in the calculator to try different splits.
Who is responsible if a housemate does not pay?
With a joint tenancy, each tenant is normally liable for the whole rent, not just their share, so the landlord can pursue any of you. Check your tenancy agreement.
Are bills split equally?
Often, yes. Many flatshares split energy, water and broadband equally, but you can agree a different arrangement.
What if we have different incomes?
Some housemates split by income instead. Use the room scores to reflect whatever you agree, as long as everyone is happy and it is written down.
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Figures are indicative averages for 2026/27, rounded for planning, and are for information only. They are not financial, legal or housing advice. See our methodology for how the figures are produced. Last reviewed October 2026.