Council Tax for HMOs — Who Pays and How It Works

Council tax rules for houses in multiple occupation (HMOs) are different from standard residential properties — and frequently misunderstood by both landlords and tenants. Get them wrong and you could end up liable for a bill you were not expecting, or miss out on an exemption you are entitled to. This guide explains who is responsible for council tax in an HMO, how HMOs are banded, and what to check if you own or manage an HMO.

What Counts as an HMO for Council Tax Purposes?

For council tax, an HMO is a property where at least three tenants live, forming more than one household, and where facilities such as a kitchen or bathroom are shared. This covers the most common HMO structures: bedsits, shared houses rented by the room, and student houses.

Importantly, the council tax definition of an HMO is slightly different from the licensing definition under the Housing Act 2004. A property can be an HMO for council tax purposes without requiring an HMO licence — particularly smaller properties with 3–4 occupants. Always check both definitions separately.

Who Is Liable for Council Tax in an HMO?

This depends on the type of tenancy and how the property is let.

Entire property let on a single joint tenancy: If a group of tenants rent the whole property together on one tenancy agreement, the tenants are jointly liable for the council tax bill — not the landlord. This is the standard arrangement for most shared student houses.

Individual rooms let on separate tenancy agreements: If each tenant has their own individual tenancy agreement for their room (the most common structure for professional HMOs), the landlord is liable for the council tax — not the tenants. The landlord pays one bill for the whole property.

Bedsits and rooms with shared facilities: Same as above — if residents have individual agreements and share facilities, the landlord is the liable party.

Why this matters: Landlords who let by the room and assume tenants are each paying their share are often caught out when a council tax debt accrues. The council will pursue the landlord, not the individual tenants.

Practical tip: Check the VOA's guidance on who is liable before setting up a new HMO tenancy structure. If the property is a purpose-built HMO or bedsit block, the landlord liability rule almost certainly applies.

How Is an HMO Banded for Council Tax?

Most HMOs are banded as a single property — meaning one council tax band covers the entire building, and one bill is issued. This is the standard approach.

However, some HMOs are banded as multiple self-contained units. This happens when:

• Each room or flat has its own separate entrance, cooking facilities, and bathroom
• The units function as genuinely self-contained dwellings rather than shared accommodation

If an HMO is banded as multiple units, each unit gets its own band and its own council tax bill. This significantly increases the total council tax liability for the building.

Whether the VOA bands an HMO as one unit or multiple depends on the physical layout of the property. If your HMO has been converted from a single dwelling and the rooms are not fully self-contained, it should be a single band. If you believe the banding is wrong — particularly if a single HMO has been split into multiple bands — you have the right to challenge it.

Use TaxBandCheck to check whether your property appears as one banding or several in the VOA's data.

Exemptions That Apply to HMOs

Several council tax exemptions are relevant to HMOs:

Student exemption: If all occupants of an HMO are full-time students, the property is fully exempt from council tax. The landlord (or the tenants if jointly liable) must apply to the local council and provide student certificates. If even one occupant is not a student, the exemption does not apply — though a 25% single person discount may apply in some edge cases.

Empty property: If the HMO is vacant between tenancies, it may qualify for an empty property discount or exemption. Rules vary by council — most grant a 100% discount for the first 1–3 months, then charge the full rate (some councils charge a premium for long-term empty properties).

Severely mentally impaired occupant: If one or more occupants qualify for the severe mental impairment exemption, that person is disregarded for council tax counting purposes, potentially reducing the bill.

Check your local council's website for the specific exemption application process, as each council handles applications differently.

Checking Whether Your HMO Band Is Correct

HMO banding errors are relatively common because:

• Many HMOs were assessed in 1991 before the property was converted
• Conversions and subdivisions after 1991 can create anomalies
• Some properties are banded as multiple units when they should be a single band

If you own an HMO and suspect the banding is wrong — particularly if you are paying multiple council tax bills on what functions as a single building — it is worth checking. A successful challenge could result in a significant backdated refund.

Use TaxBandCheck to look up the property and see how many bands are assigned to the address. If multiple bands appear for a single building that is not genuinely divided into self-contained flats, you may have grounds to challenge.

Landlords managing multiple HMOs can use our landlord portfolio audit tool to check the bands across all their properties in one go.

Key Rules to Remember

• Landlord is liable when rooms are let on individual tenancy agreements
• Tenants are liable when the whole property is let on a single joint tenancy
• Most HMOs are banded as a single property — multiple bands usually indicate an error or a genuinely divided building
• Full exemption applies if all occupants are full-time students
• Band challenges are free and refunds can be backdated — see our council tax refund guide for details

If you want specialist help reviewing your HMO's council tax position or challenging a band, our network of council tax specialists can advise.