Council tax on an HMO: why it's yours to pay, not your tenants'

If you let a property room by room, the council tax bill for it is addressed to you, not to whoever happens to be living there — and no clause in your tenancy agreement can move that liability onto a tenant. That catches out a lot of landlords who are used to an ordinary single let, where the tenant deals with the council tax in their own name because they are the person actually resident.

Why does letting room by room change who's liable?

On a single-let tenancy — one household renting the whole property — the tenant is the one who registers with the council and pays. That is the assumption most landlords carry over the first time they let a property room by room instead: surely each tenant just does the same thing for their own room?

They cannot, because nobody in a room-only letting holds the dwelling as a whole. Each tenant has a tenancy of their own room and a share of the kitchen and bathroom, and that is exactly the case the law takes out of the ordinary rules. The Local Government Finance Act 1992, s.8, lets regulations make the owner liable instead of the occupiers for certain classes of dwelling, and the Council Tax (Liability for Owners) Regulations 1992 name one of those classes as a dwelling lived in by people who are each a tenant of part only of it. Where that describes your property, the liability is yours for as long as it is let that way, whatever any individual tenant's own agreement happens to say.

In England, that class has been wider since 1 December 2023. An amendment that day added any dwelling that is a house in multiple occupation as the Housing Act 2004 defines it — broadly, lived in as their main home by people who don't form a single household, sharing a kitchen, bathroom or toilet, with rent paid for at least one of them. That limb doesn't care how the tenancy is written.

A quick way to see how much this turns on who lives there and how it's let, not the property: let a three-bedroom terrace to a single family and the council tax is theirs to register and pay, in their name, for as long as they live there. Let the same house room by room to three unrelated sharers instead, and it's yours — same bricks, same postcode, different liability. And in England, putting those three sharers on one joint tenancy of the whole house doesn't move it back to them: they still don't form a single household, so the house is still an HMO for council tax and the bill is still yours.

Is this the same test as needing an HMO licence?

No, and treating them as the same thing is where landlords go wrong. Whether you need an HMO licence turns on how many people live there and how many households they form — mandatory licensing applies once you reach five or more people forming two or more households, and some councils run additional schemes that reach further. Council tax liability turns on the definition of an HMO itself, with no licensing threshold attached, or on the property being let room by room. A three-room house let to three individual sharers can land the council tax bill on your desk well below the mandatory licensing threshold.

Can you build the cost into the rent instead?

Yes, and that's normally the sensible answer. You cannot make an individual tenant the liable party, but you can set the rent to cover council tax and tell every tenant plainly that it's included, in the same way you might with water or broadband. What doesn't work is leaving it unaddressed and assuming a tenant will register for it the way a single-let tenant would — they have no obligation to, and the bill lands on you regardless of what anyone assumed.

What if only some of the rooms are let this way?

The position gets more fact-specific once a property is a mix — some rooms let individually, others kept back, or different arrangements running side by side — and it's worth checking with the council directly rather than assuming the room-only rule covers every case. The same goes for a property standing empty between tenancies: as a general rule, council tax liability falls on the owner while nobody is resident, which is the same underlying principle showing up in a different shape.

What happens if you get this wrong?

Nothing happens to the tenant — they were never the liable party. What happens is that the bill arrives at your address, sometimes well after the letting started and sometimes backdated to it, and a landlord who spent months assuming a room tenant was "sorting their own council tax" can be looking at a bill they neither budgeted for nor saw coming.

How Tenarize handles it

Letting a property room by room in Tenarize generates a room-only agreement that states this plainly, in its own clause — the owner's liability for council tax, not the tenant's — and it isn't left to a tick-box that could be set wrongly: council tax can't be offered as something the rent optionally includes on a room-by-room letting the way it can on a single let, because the choice was never really the landlord's to make. On the tenant's side, the portal's local services section still names the council for the property from its postcode, but on a room letting it doesn't send the tenant off to pay council tax — it tells them the landlord is responsible for it by law rather than by agreement. That rule is tied to the letting type, though, and Tenarize can't tell whether the people on a whole-property tenancy form one household. If you let a whole house to unrelated sharers, record council tax as included in the rent yourself, so the agreement says you pay it. Tenarize doesn't apply for an HMO licence, decide whether one is needed, or manage the council tax account itself — all of that stays yours to do.

Tenarize is software, not a solicitor. This is general information about the rules in England, not legal advice for your situation.

Where to check this yourself

• Local Government Finance Act 1992, s.8 — legislation.gov.uk
• The Council Tax (Liability for Owners) Regulations 1992 — legislation.gov.uk
• The 2023 amendment that added HMOs to the owner-liable class — legislation.gov.uk
• Housing Act 2004, s.254: the meaning of "house in multiple occupation" — legislation.gov.uk
• Council Tax — GOV.UK
• HMO licence — GOV.UK
• Renting out a property — GOV.UK

If you're letting room by room, what actually counts as an HMO is worth reading alongside this one. Tenarize is £15 a month for one to five properties, with the first month free. The help centre is free to read either way.