I own an HMO. Does Section 24 affect HMO landlords in the same way as standard BTLs, or are there specific exemptions or additional calculations I need to consider for my mortgage interest relief?
Quick Answer
Section 24 impacts HMO landlords identically to standard BTL landlords, disallowing mortgage interest deduction from rental income and replacing it with a 20% basic rate tax credit.
## Section 24 and HMOs: Understanding Mortgage Interest Relief
Section 24 of the Finance Act 2015 directly affects all individual landlords in the UK, including those with Houses in Multiple Occupation (HMOs), by restricting mortgage interest relief. Since April 2020, individual landlords are no longer able to deduct finance costs, such as mortgage interest, from their rental income before calculating their tax liability. Instead, they receive a basic rate tax credit equivalent to 20% of their finance costs. This represents a significant change from the previous system where the full amount of mortgage interest could be offset against rental income, impacting both cash flow and overall profitability for higher-rate taxpayers.
### How does Section 24 impact HMO landlords?
Section 24 applies to all individually-owned residential properties, including HMOs, without specific exemptions based on property type. The change converts a pre-tax deduction into a basic rate tax credit, meaning higher and additional rate taxpayers are disproportionately affected. For example, a higher rate taxpayer paying 40% income tax would previously have received 40% relief on their mortgage interest. Now, they only receive a 20% tax credit, effectively doubling the taxable income derived from the mortgage interest portion of their rent. This shift necessitates careful financial planning for HMOs, which often have higher mortgages due to conversion costs or larger property sizes.
Consider an HMO landlord with £60,000 annual rental income and £30,000 in mortgage interest. Before April 2020, their taxable income would be (£60,000 - £30,000) = £30,000 (ignoring other expenses). After Section 24, their taxable income is £60,000, and they receive tax relief of 20% on the £30,000 interest, which is £6,000. For a higher rate taxpayer, this could mean an additional £12,000 in tax. This reduction in effective relief can significantly impact `HMO profitability` and `landlord profit margins` after tax.
### Are there any specific exemptions or additional calculations for HMOs under Section 24?
No, there are no specific exemptions for HMOs under Section 24. HMRC's guidance categorises all residential landlord mortgages in the same way for interest relief purposes, regardless of whether the property is a standard Buy-to-Let or an HMO. The calculation for the 20% basic rate tax credit remains consistent across all individually-owned residential rental properties. This means `HMO investment returns` must now be carefully modelled with the post-tax implications of Section 24 in mind. It's crucial for landlords to understand that while HMOs can offer higher rental yields, the impact of Section 24 on their tax bill can still be substantial, particularly if financing a significant portion of the property's value. The `rental yield calculations` should always factor in the net rental income after tax credit, not just gross rent minus interest. Some landlords consider holding properties in a limited company to avoid Section 24, as corporations can still deduct finance costs, though corporation tax of 19% (small profits up to £50k) or 25% (over £250k) still applies.
## Potential Opportunities Amidst Section 24
* **Higher Yields through Room Renting**: HMOs generally provide **higher gross rental yields per property**, which can help absorb the impact of reduced mortgage interest relief compared to single-let properties. This enhanced cash flow might partially offset the tax burden.
* **Operating as a Business**: If an HMO property qualifies as a furnished holiday let or substantial business for tax purposes, different rules might apply, allowing full interest deduction. This is rare for standard AST HMOs but worth exploring for specific layouts.
* **Limited Company Structure**: **Holding HMOs in a limited company** avoids Section 24, as companies can still deduct mortgage interest. Corporation tax rates are 19% (under £50k profit) or 25% (over £250k profit), which can be advantageous for higher-rate individual taxpayers. This is a common strategy for scaling `BTL investment returns`.
## Important Considerations for HMO Landlords
* **Increased Taxable Income**: For higher or additional rate taxpayers, Section 24 **increases their taxable income**, potentially pushing them into a higher tax bracket or increasing their overall tax bill significantly.
* **Reduced Net Profit**: The shift from full relief to a 20% tax credit directly **reduces the net profit** for many landlords, impacting their ability to reinvest or grow their portfolio.
* **Cash Flow Strain**: Landlords must pay tax on a larger proportion of their gross rental income, which could lead to **cash flow problems** if not budgeted for correctly.
* **Mortgage Stress Test Impact**: Lenders' `standard BTL stress test` often uses a notional rate (e.g., 5.5% at 125% rental coverage) which does not directly account for Section 24's tax impact, meaning property financing might seem viable on paper but less so after tax.
## Investor Rule of Thumb
Treat all residential property finance costs as subject to the 20% basic rate tax credit, not as a direct deduction, and calculate your true net profit and tax liability accordingly, especially for higher tax brackets or when considering a limited company.
## What This Means For You
Section 24 is a reality for all individual landlords, HMOs included. It's not a question of exemption but of detailed financial modelling to understand your post-tax profitability and cash flow. Most investors don't lose money because they misunderstand the rules; they lose money because they don't apply the rules to their specific deal. If you want to understand precisely how Section 24 impacts your HMO portfolio and explore strategies to mitigate its effects, this is exactly what we analyse inside Property Legacy Education.
Steven's Take
The core of Section 24 is simple: mortgage interest for individually-owned residential properties is no longer deductible. This applies equally to HMOs. From personal experience, the biggest mistake HMO landlords make here is assuming their higher gross yields automatically compensate for it. For higher-rate taxpayers, the marginal tax difference can be significant. Running a 'pre-Section 24' versus 'post-Section 24' profit and cash flow analysis is non-negotiable. Explore whether a limited company is more tax-efficient for your growth plans, particularly with current corporation tax rates of 19% or 25%. Don't underestimate the impact on your cash flow.
What You Can Do Next
Review your current UK property portfolio's tax structure: Assess if your residential investment properties are held personally or within a limited company to determine Section 24 applicability. HMRC guidance is available on gov.uk/guidance/income-tax-when-you-let-property.
Perform a detailed Section 24 impact analysis: Calculate your post-tax cash flow, considering the 20% basic rate tax credit instead of full interest deduction. Use a property tax calculator or spreadsheet to model scenarios.
Consult a property tax specialist: Engage an accountant specialising in property tax (search 'property tax accountant' on ICAEW.com) to discuss your specific circumstances and potential strategies like incorporation for future acquisitions, or if your property qualifies as a furnished holiday let.
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