Short-Let Tax: What UK Hosts Need to Know Before Self-Assessment

Holiday Lets Are Not the Same as Standard Buy-to-Let

Many hosts who move from long-term to short-term letting assume the tax treatment is similar. It isn't. The HMRC rules for Furnished Holiday Lettings (FHL) are a distinct regime — with specific qualifying criteria, different allowable expenses, and different reliefs. Getting this wrong in either direction (under-claiming or over-claiming) causes problems.

This post is an overview of the key points to be aware of. It's not tax advice — your specific situation will depend on factors including your income level, your property circumstances, and your use of the property. An accountant who works with property owners is worth the cost, particularly in your first year.

The Furnished Holiday Let Rules

To qualify as a Furnished Holiday Let under HMRC rules, your property must meet certain conditions in each tax year. At the time of writing, the key tests include:

• The property must be available for letting to the public for at least 210 days per year
• It must actually be let for at least 105 days per year
• It must not be occupied by the same person for more than 31 consecutive days for more than 90 days of the year

If your property doesn't meet these conditions in a given tax year, it may be treated as a standard rental property instead — with different tax implications.

Note: the FHL regime has been subject to proposed changes in recent budgets. Check the current HMRC rules or speak to an accountant to confirm what applies in the current tax year.

What You Can Claim as Expenses

One of the advantages of the FHL regime (if your property qualifies) is that allowable expenses are broader than for standard residential lets. These typically include:

• Mortgage interest (different treatment applies to standard residential lets post-2020)
• Repairs and maintenance
• Cleaning and laundry
• Platform fees and booking commissions
• Advertising costs
• Insurance premiums
• Accountancy fees related to the letting
• Utility costs if included in the rental price

Capital allowances for furniture and equipment may also be available, which is not the case for standard residential lets.

Keep records of all income and expenses from day one. Receipts, bank statements, invoices — anything you might need to support a claim.

Income You Must Declare

All rental income from your holiday let must be declared on your self-assessment return, whether it comes from platforms like Airbnb, direct bookings, or any other source.

Platforms operating in the UK are required to share income data with HMRC under the DAC7 rules introduced from January 2024. HMRC will have information about your platform income. Don't assume that money received through a third-party platform is invisible to them.

The Rent-a-Room scheme, which provides a tax-free allowance for people letting rooms in their own home, does not apply to self-contained holiday lets. These are separate regimes.

Record-Keeping for Tax Purposes

For tax purposes, you should keep records of:

• All rental income, by booking and date
• All expenses with supporting documentation
• Days the property was available for let
• Days the property was actually let (to confirm you meet the 105-day threshold)
• Your own personal use of the property

A simple spreadsheet works for most hosts. The key is consistency — recording income and expenses as they happen rather than reconstructing them in January.

When to Get Advice

If this is your first year letting a holiday property, if your income is significant, if you're considering buying a second property specifically to let, or if you're unsure whether your property meets the FHL criteria — these are all situations where professional tax advice will save you more than it costs.

The rules are specific, and the penalties for errors on self-assessment are real. A one-hour conversation with an accountant early in the process is a sound investment.

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