Working from home as a sole trader

A sole trader working from home should compare the permitted simplified approach with an appropriate calculation of actual business costs. Keep evidence of working patterns and eligible expenses, and use self-employed rules rather than assuming employee homeworking arrangements apply.

The method chosen must fit the cost category and eligibility conditions. Avoid claiming the same cost twice through a flat amount and a separate expense entry.

Describe how the home supports the trade

Record the activities carried out at home, the areas used and the approximate working pattern. Distinguish regular administration from occasional storage or a space used exclusively for a particular purpose. A useful description explains how the household arrangement relates to the business without assuming that every room or hour has the same business significance.

Check the simplified homeworking rules for self-employed people and the hours required for the relevant monthly band. HMRC also explains that telephone and internet costs are considered separately from that flat-rate calculation. ^[1] Use current guidance rather than an employee allowance or a social-media example. Keep a brief working record showing why the chosen month falls within the relevant conditions.

Compare methods using the same period

Prepare one calculation for the available simplified method and another for the actual-cost approach where appropriate. Use the same period and realistic business-use assumptions so the comparison is meaningful. Ask the accountant which costs belong in the calculation and which require separate analysis, particularly where the home is owned, rented or shared with another person.

Do not treat the largest numerical result as automatically correct. Eligibility, supporting evidence and interactions with other costs matter. Explain the proposed allocation under the actual-cost method, including relevant time and space considerations. Keep the underlying bills and the calculation together so another reviewer can reproduce the result without guessing why a particular fraction was selected.

Avoid overlapping claims

Identify costs already included through another route, such as a separate business telephone subscription or an expense reimbursed by another organisation. A flat-rate claim and an actual-cost entry should not duplicate the same covered expenditure. Maintain a category map showing where each cost is considered and what has deliberately been excluded from the homeworking total.

Check separately purchased equipment and furniture with the accountant rather than assuming they are automatically part of the household-cost calculation. The accounting method and nature of the item can affect treatment. Use Allowable expense evidence for sole traders for evidence of individual purchases. Keep business and private components distinguishable even when the supplier's invoice or household direct debit combines several services in one payment.

Account for changes during the year

A trader may work from home for part of the year, rent a studio later or move into a household with different bills. Record the dates and review the calculation for each relevant period. An annual figure copied from a stable earlier year may not reflect the current arrangement. Where working hours fluctuate, preserve enough information to explain the monthly assessment.

If part of the home has a more substantial or exclusive business use, raise any wider property, insurance, planning or tax questions with suitable advisers. A homeworking expense calculation does not resolve those separate issues. Describe the actual use rather than relying on a room label such as office, which may conceal a space also used privately or a more extensive business operation.

Keep the calculation proportionate and reviewable

A small homeworking claim should not require an intrusive record of every private household activity. Agree a practical evidence method that supports the relevant business facts. A monthly note of working patterns and an organised bill file may be more useful than a complicated spreadsheet full of assumptions that the trader cannot explain at year end.

For Self-employed expense review, prepare the home-use description, proposed method, monthly working information and bills relevant to an actual-cost comparison. Ask for a conclusion on eligibility, the allocation and any separate costs that remain claimable. The guide to Cash basis and traditional accounting helps distinguish the broader accounting method from this particular expense choice; selecting cash basis does not by itself decide every homeworking calculation.

Review the final schedule against the bookkeeping entries before filing. Check that the claimed amount was entered once and that any adjustment from the accountant reached the live records. Keep the method and supporting evidence with the return rather than retaining only a final total. This makes the following year's review quicker and allows a change of circumstances to be assessed from an understandable starting point. Where another person pays a household bill, explain the payment arrangement and obtain advice on the relevant business claim instead of assuming ownership of the bank account decides everything.

Illustrative scenario

A home-based translator keeps a monthly record of business hours and household bills. Before filing, they compare eligible methods and record which costs are included in the chosen calculation.

Preparation checklist

• Record homeworking hours
• Gather relevant bills
• Compare eligible methods
• Document excluded private use