Working From Home Tax Deductions for UK Freelancers

Can You Claim Work From Home Expenses?

Yes — if you work from home as a self-employed person, you can claim a portion of your household running costs as an allowable business expense. This includes heating, electricity, broadband, and in some cases rent or mortgage interest. The key rule is that you can only claim the business proportion of costs that are used "wholly and exclusively" for business purposes during business hours.

Method 1: The Flat Rate Method (Simplified Expenses)

HMRC offers a flat rate option that avoids the complexity of calculating actual business proportions. The flat rate is based on the number of hours you work from home per month:

• £10/month: 25–50 hours per month
• £18/month: 51–100 hours per month
• £26/month: 101+ hours per month

These amounts are modest — they won't fully reflect your actual costs if you work from home full-time — but they're simple, require no record-keeping beyond your hours, and are accepted by HMRC without question.

Note: the flat rate does not include phone or broadband — you can claim the business proportion of these separately.

Method 2: Actual Cost Method

For a larger deduction, calculate the actual business proportion of your household costs. The calculation:

1. Count the number of rooms in your home (excluding bathrooms)
2. Determine what proportion of your working week the business room is used for business (e.g., 8 hours per day, 5 days per week = 40/168 hours = 24%)
3. Apply this proportion to eligible household costs: electricity, gas, council tax (for the business proportion), broadband, and insurance

Example: if your total household costs are £12,000 per year and you use one room out of five rooms for business 30% of the time, your allowable claim is £12,000 × (1/5) × 30% = £720.

What About Rent and Mortgage Interest?

You can claim a proportion of rent if you rent your home. For homeowners, you can claim a proportion of mortgage interest (not capital repayment). However, be careful: if you designate a room exclusively for business, it may create a Capital Gains Tax liability when you sell your home (the residential exemption may be reduced for that room). Many freelancers avoid this by claiming the room as used for both personal and business purposes rather than exclusively business.

Broadband and Phone

If broadband is used partly for work and partly personally, claim the business proportion. If you have a contract primarily for business use, the full cost may be allowable. Keep your mobile and business calls on separate plans if possible, or estimate and document the business proportion carefully.

Home Office Equipment

Equipment used for business — desk, chair, monitor, printer — can be claimed as a capital allowance or deducted in full in the year of purchase under the Annual Investment Allowance. If the equipment is also used personally, claim only the business proportion.

Which Method Should You Choose?

If you work more than 100 hours per month from home and have significant household costs, the actual cost method almost certainly gives a larger deduction. If you work fewer hours or have modest household costs, the flat rate offers simplicity without much sacrifice. You can switch methods between tax years.

Keeping Records

Whichever method you use, keep evidence of your choice and the calculation. For the actual cost method, keep utility bills, receipts, and a note of how you calculated the business proportion. HMRC can request this in an enquiry.