A receipt is not automatically a tax deduction. For owner-managed businesses, understanding which limited company expenses that can be claimed are genuinely allowable can reduce the Corporation Tax bill, protect cash flow and avoid unwelcome questions later. The key test is straightforward in principle: the cost must be incurred wholly and exclusively for the purposes of the business. Applying that test to real life is where careful judgement matters.
Limited company expenses that can be claimed
Most legitimate day-to-day costs of running a limited company are deductible when they relate to business activity. The company pays the expense, records it accurately and keeps evidence showing what was bought and why it was needed.
Typical allowable costs include:
- premises costs, such as office rent, business rates, utilities, repairs and commercial insurance;
- accountancy, bookkeeping, legal and other professional fees connected with the business;
- advertising, website hosting, marketing, printing and relevant software subscriptions;
- office equipment, stationery, postage, telephone costs and internet services;
- business insurance, bank charges, payment-processing fees and interest on qualifying business borrowing.
That does not mean every cost is claimed in full. Where a director or employee uses something partly for private purposes, only the business element is normally deductible. A mobile phone used 70% for company work, for example, should be claimed on a reasonable and supportable basis. Clear records are far more valuable than trying to estimate a position after the year end.
Travel, vehicles and accommodation
Business travel is an area where small decisions can make a significant difference. Travel to meet clients, attend temporary workplaces, visit suppliers or carry out work away from the normal place of business is generally allowable. This can include rail fares, parking, taxis, accommodation and reasonable subsistence while travelling for business.
Ordinary commuting is different. Travel between home and a permanent workplace is normally personal, even if the company pays for it. The same principle applies to a director who regularly travels from home to the company office.
If you use your own car for company journeys, the company can pay approved mileage rates. For cars, the usual rate is 45p per mile for the first 10,000 business miles in a tax year and 25p thereafter. Keep a mileage log showing the date, journey, business purpose and miles travelled. It is simple administration that can prevent a claim becoming difficult to defend.
A company-owned vehicle needs more thought. The company may claim running costs and capital allowances, but private use by a director or employee can create a taxable benefit in kind. For many owner-managers, a personally owned car with mileage claimed from the company is more practical. The right route depends on mileage, vehicle type, private use and the company’s wider tax position.
Working from home and use of home costs
Many directors run part of their company from a home office. The company can reimburse certain additional household costs where there is a genuine business basis. One straightforward option is the fixed £6 per week homeworking allowance, which can usually be paid without records of the underlying costs.
Alternatively, the company may reimburse a proportion of additional costs, such as heating, electricity and business calls. This needs a fair calculation and should reflect actual business use. It is not normally appropriate to charge the company a share of mortgage interest, rent or council tax simply because a desk is used at home.
Some directors consider charging rent to their company for use of a room. This can work in limited circumstances, but it creates personal tax consequences and may affect reliefs on a future house sale if not handled correctly. It should be planned, not adopted as a standard year-end deduction.
Salary, pensions and staff costs
Salaries, employer’s National Insurance contributions and employer pension contributions are normally allowable company costs, provided the remuneration is for work carried out and is commercially justifiable. This includes pay for family members who genuinely work in the business, but the salary should match the duties performed.
Employer pension contributions can be particularly useful for directors because they may reduce Corporation Tax while building long-term retirement provision. The contribution must be paid by the company, be within the available pension limits and satisfy the wholly and exclusively test. A contribution that appears excessive compared with the director’s role or the company’s circumstances may deserve closer scrutiny.
Other staff costs can be allowable too. Training that maintains or improves skills used in the existing business is generally deductible. Training that equips someone for a wholly new trade or profession may not be. Staff welfare, uniforms and relevant protective clothing are usually acceptable, whereas ordinary clothing that could be worn outside work is rarely allowable.
Entertaining, gifts and subscriptions
These are common areas of misunderstanding. Client entertaining – including meals, drinks, event tickets and hospitality – is generally not deductible for Corporation Tax, even where it helps build a valuable commercial relationship. The company can pay for it, but it should be identified correctly in the accounts as non-deductible.
Staff entertaining is treated differently. A staff Christmas party or annual event can be tax-efficient where it is available to all employees and costs no more than £150 per attendee per tax year. The £150 is a limit, not an allowance: if the cost is £151 per head, the full amount can become taxable.
Business gifts need care. Low-value items carrying a clear advert for the company may be allowable, but gifts of food, drink, tobacco or exchangeable vouchers are usually restricted. Professional subscriptions are usually allowable where they are relevant to the employee’s work and belong to an approved body. A personal membership with little business connection is unlikely to meet the test.
Equipment, software and larger purchases
A laptop, office furniture, tools, machinery and other equipment can support the business for several years. These purchases may not be treated as ordinary expenses in the accounts, but the company can often claim tax relief through capital allowances. The Annual Investment Allowance gives many small companies full relief in the year of purchase for qualifying plant and machinery, subject to the rules and available allowance.
Software is often more straightforward. Cloud accounting packages, customer relationship management systems, design software and security tools are normally allowable where used for the business. If the subscription or licence has a mixed personal and business purpose, apportionment may be needed.
Timing matters with larger purchases. Buying equipment simply to obtain tax relief is rarely a sound commercial decision. Tax relief reduces the cost; it does not make an unnecessary purchase profitable. Consider whether the equipment improves capacity, saves time or supports planned growth before committing funds.
Costs that are often claimed incorrectly
Some payments are regularly put through limited companies but are not tax-deductible business expenses. Dividends are distributions of profit, not expenses. Corporation Tax itself and most fines or penalties are not deductible. Personal shopping, private school fees, ordinary haircuts, and the cost of everyday clothing are also not company costs just because a director has paid with the business card.
Business lunches require a realistic assessment too. A meal while working alone is usually a personal expense unless it is part of qualifying business travel. A lunch with a client may be commercially worthwhile, but it is normally entertaining rather than a deductible tax expense.
Where the company pays a director’s personal cost, it should not simply disappear into expenses. It may need to be treated as a director’s loan, salary, a benefit in kind or a dividend, depending on the facts. Leaving these transactions unresolved can create tax charges and make the accounts less useful for managing the business.
Good records make good claims easier
Keep invoices, receipts, mileage records and brief notes that explain the business purpose of less obvious costs. Digital bookkeeping makes this much easier when receipts are captured at the time of purchase rather than collected in a box at year end.
It is also worth reviewing expense categories during the year. Regular checks can identify subscriptions no longer used, missed mileage claims, unusual director transactions and costs that need a VAT or benefit-in-kind assessment. This is not just a compliance exercise. Accurate information helps you see where money is going and make more confident decisions about pricing, recruitment and investment.
Every company is different, particularly where directors work from home, use company vehicles or mix personal and business spending. A short review before the year end can turn unclear expenses into a practical plan, giving you certainty over what the company can claim and what should stay personal.