A purchase can be useful to your business without its entire cost being deductible in the way you expect. Before claiming it, check who incurred the expense, what it was for, whether it includes private use, what evidence exists and which tax and accounting rules apply.
In this article
- Start with the legal structure
- Ask six questions about each uncertain cost
- Private use needs a defensible explanation
- A business conversation does not make every meal deductible
- Separate assets from day-to-day costs
- An illustrative review of a freelancer’s costs
- Review regularly, then ask for a scoped decision
- Describe what the expense was for
- Keep the invoice or receipt
- Check business use and applicable rules
- Agree the treatment before claiming
This matters because a bookkeeping category is only a description. Putting a payment under “travel” or “office costs” does not settle its tax treatment. A consistent review process is more reliable than copying how another business claims similar purchases.
Start with the legal structure
A sole trader and a limited company are different taxpayers. The company’s money is separate from its owner’s personal money, while a sole trader’s drawings are not business expenses. GOV.UK provides separate guidance for self-employed expenses and company expenses for Corporation Tax.
For a company, HMRC’s guidance asks whether a cost is revenue or capital, and whether it was incurred wholly and exclusively for the business. Costs with a private element need careful analysis; do not automatically apply the sole-trader approach to company-funded personal benefits.
Write down which person or entity contracted for the purchase and paid it. If a director paid a company cost personally, retain the invoice and reimbursement record. If the company paid something personal, flag it for review rather than treating it as an ordinary operating expense.
Ask six questions about each uncertain cost
| Question | Evidence or action |
|---|---|
| What was the business purpose? | Note the project, activity or reason for the purchase |
| Who bought it? | Check the invoice and whether it belongs to the company or individual |
| Was there personal use? | Record the facts and any reasonable allocation basis |
| Is it running expenditure or an asset? | Provide the description, purchase date and expected use |
| Which period does it belong to? | Check the accounting method and relevant dates |
| Could another tax be involved? | Flag VAT, employment benefits or reimbursement questions separately |
The point is to preserve facts while they are fresh. Your accountant can assess an uncertain claim more effectively from an invoice and a clear explanation than from a year-end estimate about what a payment might have covered.
Private use needs a defensible explanation
For a sole trader, only the business part of mixed-use costs can be claimed as allowable expenses. HMRC describes reasonable allocation of costs such as phone use and working from home in its self-employed expenses overview.
Keep the method alongside the amount. For a phone, that might include usage evidence and why the chosen allocation is reasonable. For home working, explain the rooms, time and costs included. A percentage selected simply because it produces a convenient deduction is not a sound method.
Company arrangements require their own review, particularly where a director or employee benefits personally. Tell the preparer about private use even if the supplier’s invoice uses the company name. The invoice does not remove the underlying issue.
A business conversation does not make every meal deductible
Client entertaining is a common source of confusion. For the self-employed, HMRC says that entertaining customers, clients or suppliers is generally not an allowable expense, including food and drink at meetings. Its marketing and entertainment guidance distinguishes this from other situations, including food provided as part of a service sold to customers.
Record the attendees and purpose rather than categorising every restaurant payment as “business meals”. Staff events, travel subsistence, customer hospitality and food sold in the ordinary course of a catering business are different fact patterns. Any employment-tax or VAT consequences also need their own consideration.
Separate assets from day-to-day costs
A machine, vehicle or substantial equipment purchase may need treatment different from a routine expense. The answer depends partly on your accounting method and the asset. HMRC explains in its expenses guidance that capital-allowance treatment and cash-basis treatment differ.
Send the purchase invoice, finance agreement, details of private use and any disposal or trade-in information to the preparer. Do not assume the instalment paid from the bank is the expense figure, or that the accounting depreciation automatically equals the tax deduction. Planning the purchase and reviewing its treatment before filing is easier than reconstructing it later.
An illustrative review of a freelancer’s costs
Imagine a sole-trader photographer buys editing software, a camera and a mobile phone used both personally and for clients. They also take a potential client to lunch.
The software’s business purpose is documented. The camera is flagged for review with the invoice and accounting-method information. Phone records support a business-use allocation. The lunch is identified as client hospitality rather than hidden within general travel costs.
No tax deduction is assumed merely because a payment went through the business bank. Each item has a different question, and the preparer receives enough evidence to answer it. This is an illustrative process, not a ruling on a particular taxpayer’s purchases.
Review regularly, then ask for a scoped decision
Keep receipts with the transaction, separate personal withdrawals and investigate unclear payments monthly. Preserve a list of exceptions so doubtful treatment is visible before the return is approved.
If a cost is material, unusual or partly personal, ask before claiming it. EPOS’s tax support can be discussed around your records, structure and specific questions, with specialist matters and the work to be performed confirmed in advance. See the pricing page and request a quote for the agreed scope.