Key facts
- HMO rental income is taxed as property income on your Self Assessment return, just like any other buy-to-let.
- HMOs often require a mandatory licence from the local council — licensing fees are a deductible expense.
- The Section 24 mortgage interest restriction applies to HMOs — you receive a 20% tax credit, not a full deduction.
- HMO landlords can typically claim more expenses than standard buy-to-let landlords (utility bills, council tax, communal cleaning).
- The Replacement of Domestic Items Relief covers furniture and appliances in each room on a like-for-like basis.
What Is an HMO?
A House in Multiple Occupation (HMO) is a property rented to three or more tenants who form two or more separate households and share facilities such as a kitchen or bathroom. HMOs are subject to additional regulation, including mandatory licensing for larger properties.[2]
| HMO Type | Definition | Licensing |
|---|---|---|
| Standard HMO | 3+ tenants, 2+ households, shared facilities | May require additional licensing (council-dependent) |
| Mandatory licence HMO | 5+ tenants, 2+ households | Mandatory licence required nationwide[2] |
How HMO Income Is Taxed
HMO rental income is reported on the property pages of your Self Assessment return (SA105), just like any other rental income. If you have multiple properties, all rental income and expenses are combined into a single property business.[1]
- Total rental income from all properties is added together
- Total allowable expenses from all properties are deducted
- The net profit (or loss) is added to your other income and taxed at your marginal rate
- The Section 24 mortgage interest restriction applies — finance costs receive a 20% tax credit only
Allowable Expenses for HMOs
HMO landlords can typically claim a wider range of expenses than standard buy-to-let landlords, because the landlord often provides more services:[3]
| Expense | Notes |
|---|---|
| HMO licence fees | Mandatory and additional licensing fees are deductible |
| Council tax | Usually paid by the landlord in an HMO |
| Utilities (gas, electric, water) | Deductible when paid by the landlord |
| Communal area cleaning | Cleaning services for shared kitchens, bathrooms, hallways |
| Internet / TV licence | If provided as part of the tenancy |
| Fire safety equipment | Fire alarms, extinguishers, fire doors, emergency lighting |
| Repairs and maintenance | Higher frequency due to more tenants and shared wear |
| Insurance | HMO-specific landlord insurance (typically higher premiums) |
| Letting agent fees | Management fees, tenant-finding fees |
| Furniture replacement | Replacement of Domestic Items Relief on a like-for-like basis |
Tip: Because HMOs generate more expenses per property, meticulous record-keeping is especially important. Keep receipts for all expenses, including small items like cleaning supplies and light bulbs.
Section 24: Mortgage Interest on HMOs
The Section 24 mortgage interest restriction applies to all residential lettings, including HMOs. You receive a 20% tax credit on your finance costs rather than a full deduction. For higher-rate taxpayers, this significantly increases the effective tax burden. See our detailed guide to the mortgage interest restriction.
Capital Expenditure and Improvements
Common HMO capital expenditure includes:
- Room conversions (e.g. converting a lounge into a bedroom) — improvement, not deductible from income
- Fire door installation (required for licensing) — improvement if new, repair if replacement
- En-suite bathrooms added to rooms — improvement, deductible from CGT on sale
- Replacing an existing kitchen to the same standard — repair, deductible from income
Tax Planning for HMO Landlords
- Consider incorporation: The higher income from HMOs means Section 24 bites harder; a company structure avoids this restriction
- Claim all expenses: HMOs have more deductible costs than standard lettings — ensure you claim everything
- Budget for compliance: HMO licensing, fire safety, and higher maintenance costs reduce net profit
- Joint ownership: If purchasing with a partner, consider ownership proportions and Form 17 elections to optimise tax
Frequently Asked Questions
Is HMO income taxed differently from standard rental income?
No. HMO income is taxed in the same way as any other property income. It is added to your total income and taxed at your marginal rate. The key difference is that HMOs typically generate higher income per property but also have higher expenses, so the net taxable profit may not be proportionally larger.
Can I deduct HMO licensing fees?
Yes. HMO licence fees, whether for mandatory or additional licensing, are a deductible revenue expense. They are an ongoing cost of letting the property and are therefore allowable.
Who pays the council tax on an HMO?
In most HMOs, the landlord is liable for council tax, not the individual tenants. This is because the property is not self-contained units. The council tax you pay is a deductible expense against rental income. In some cases where tenants have exclusive occupation of self-contained flats, they may be liable instead.
Can I claim the Rent-a-Room Scheme on an HMO?
Only if you live in the property yourself and let rooms in your own home. If you are a live-in landlord letting rooms in a property you occupy as your main residence, the Rent-a-Room Scheme (£7,500 tax-free) may apply. If you do not live there, it is a standard property letting.
Further Reading
- Allowable Landlord Expenses — complete list of deductible costs
- Mortgage Interest Restriction (Section 24) — how the 20% credit works
- Incorporating a Property Business — when a company structure makes sense
- Record-Keeping for Rental Income — what records to keep
- Declaring Rental Income — reporting HMO income on SA105
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