What Expenses Can You Claim Through a Limited Company?

Running a limited company means you can claim a wide range of business expenses against your profits, reducing the amount of Corporation Tax you owe. The key rule is simple: HMRC allows you to claim expenses that are incurred wholly and exclusively for business purposes. But knowing which expenses qualify — and how to claim them correctly — is where most director confusion starts. This guide explains exactly what you can claim, with practical examples.

The Wholly and Exclusively Rule

Every expense claim hinges on one question: was it incurred wholly and exclusively for business purposes? If you buy a laptop used 50% for the business and 50% for personal use, you can claim 50% of the cost. If you use your car for business and personal driving, you claim only the business portion — either by tracking actual mileage or using HMRC's approved mileage allowance of 45p per mile for the first 10,000 miles, then 25p. This isn't just theory; if HMRC investigates and finds you've claimed personal expenses, you'll face penalties plus interest on the unpaid tax.

The other key distinction: revenue expenses vs. capital purchases. Revenue expenses (everyday running costs) are claimed in full in the year you incur them. Capital purchases (equipment, machinery, vehicles, buildings) are depreciated through capital allowances — typically a fixed percentage write-down each year, not immediate claim. We'll come back to this, as it changes the tax planning game.

Operating Expenses You Can Claim

Most day-to-day running costs are claimable: office supplies (stationery, printer ink), software subscriptions, website hosting, software licenses, and utility bills (electricity, water, internet) — allocated to business use only if shared with a residence.

Professional services are a big one. Accountancy fees for preparing your accounts, bookkeeping services, and payroll administration costs are fully claimable. Solicitor fees for legal advice on business matters, company secretarial services, and audit fees all qualify. If you have an external accountant preparing your Corporation Tax return (most companies do), that's one of the highest-value deductible expenses you'll have.

Marketing and advertising — online ads, printed materials, website design, social media tools — are fully deductible. Even sponsorships count, provided they're genuinely for business promotion rather than personal gratification.

Insurance is claimable: employers' liability insurance (mandatory if you have employees), professional indemnity, public liability, contents insurance for business premises, and business interruption insurance all reduce your taxable profit.

Training and courses relevant to your business are claimable. If you're a director taking a course to improve your leadership skills or learn new software essential to the business, claim it. If you're updating professional qualifications required for your industry, that's deductible. The line gets blurry with general self-improvement, so keep receipts and document the business purpose.

Subscriptions to professional bodies and trade associations are claimable — accountancy bodies, law societies, trade unions, industry associations. Magazine subscriptions and journal subscriptions, provided they're relevant to the business, are in.

Repairs and maintenance: fixing a broken roof, repainting the office, replacing a broken desk — these are revenue expenses and claimed in full. Improvements (adding a new roof, converting the office) are capital and go through capital allowances instead. HMRC's own guidance on the difference is sometimes vague; when in doubt, ask your accountant, because the distinction affects the timing of the tax relief.

Entertaining is a minefield. You cannot claim entertaining of clients, customers, or business contacts — not meals, not events, nothing. (There's an exception: Christmas parties for staff under £150 per head are claimable.) You can claim staff meals if they're part of normal business operations — a subsidised canteen or lunch allowance for employees. The customer lunch? Not claimable.

Staff Costs and Payroll

If you employ staff, salaries and wages are fully deductible. Employer National Insurance contributions (currently 15% on earnings above the secondary threshold of approximately £9,100 per employee per year) are also claimable. Bonuses, commission, and redundancy payments (within limits) are deductible too.

Pension contributions you make for employees — as part of auto-enrolment or beyond — are fully claimable. If you contribute to your own company pension (as the director), that also reduces the company's taxable profit.

Training and development for staff — courses, conferences, certifications — are claimable. Even team-building activities and away days are claimable, provided they're genuinely for team benefit and not disguised holidays.

Employee benefits have limits. Providing tea, coffee, and snacks in the office is deductible. Subsidising a gym membership or health insurance can be claimable under certain conditions. But the details matter, so talk to your accountant about structure.

This is where understanding tax-efficient ways to pay yourself from a limited company becomes crucial — your salary, dividends, and pension contributions all interact with your company expenses, and getting the balance right saves thousands.

Property and Premises

If you own the property your company operates from, the company cannot claim the mortgage interest or capital repayment — that's a personal finance decision. However, if you rent premises to your company, you can structure this as a legitimate business expense. Your personal tax position changes (you report the rental income), but the company gets a deduction. Run the numbers with your accountant before setting this up.

If you lease business premises (office, shop, workshop), the full rent is deductible. Service charges for shared buildings are deductible. Rates (business property tax) are fully claimable. Council tax on a property partly used for business can be partly claimed.

Council tax rates, water rates, and other utilities on a property you own that's partly used for business can be apportioned and claimed. If you work from home and own the property, you can claim a proportion of council tax, utilities, and insurance, though the amount is modest — typically £4–£6 per week depending on your circumstances. See how to claim working from home tax relief for the detailed rules.

Maintenance, repairs, and cleaning of business premises are fully deductible. Redecorating the office, fixing a leaking roof, or cleaning contracts — all claimable. Improvements (extending the building, upgrading the boiler beyond repair) are capital and go through allowances.

Professional and Administrative Costs

Accountancy, bookkeeping, payroll processing — we've covered these, but they're worth emphasizing because they're high-value deductions most companies claim.

Professional subscriptions are fully deductible if they're relevant to your business — law society, accountancy body, engineering institution, trade association. Many business owners don't claim these because they think they're "personal development"; they're not, they're business expenses.

Bank charges, interest on business loans, overdraft fees — all deductible. (Importantly: the capital repayment on a loan is not deductible, only the interest.)

Telephone and internet — business mobile contracts and landlines are fully deductible. If you use a personal phone partly for business, you can claim a proportion.

Postage and stationery — envelopes, paper, folders, printing — all deductible.

Subscriptions to business software, accounting platforms, and SaaS tools — deductible.

Travel and Vehicles

This is where many company directors miss significant deductions.

Mileage: Use the HMRC mileage allowance of 45p per mile for the first 10,000 miles in the tax year, then 25p thereafter. You don't need to own the vehicle; hired cars and pool cars count. Keep a mileage log (dates, destinations, business purpose, miles). See how to claim for business driving for the detailed process. The mileage route is simpler than claiming actual fuel costs.

Vehicle ownership: If the company owns a car (or multiple cars), the full purchase cost goes through capital allowances — you get a fixed-percentage write-down each year, not an immediate claim. Running costs (fuel, maintenance, insurance, MOT) are fully deductible in the year they're incurred.

Bicycles: Capital purchases under £200 can be claimed in full in the year of purchase. Bicycle storage facilities are also deductible.

Public transport: Train and bus fares for business travel are fully deductible. Season tickets used for business commuting are partly deductible (the business portion).

Accommodation and subsistence: Hotels, meals, and incidental expenses while traveling for business are deductible — but only the genuine business travel portion. A weekend in Manchester for a client meeting? Yes. A weekend in Manchester that includes a holiday? You can claim the business days only, and HMRC will challenge if it looks like a disguised holiday.

Flights and taxis: Business flights and taxi fares are deductible. If you fly premium cabin for business necessity (say, you need a bed to sleep properly for a 15-hour journey), the extra cost over economy might be claimable, but HMRC scrutinizes this.

Capital Allowances vs. Revenue Expenses

Here's where timing and tax planning intersect.

Revenue expenses are claimed in the year you incur them, reducing that year's profit.

Capital purchases (equipment over £200, machinery, vehicles, building improvements, IT hardware) are NOT fully claimed in year one. Instead, you claim a percentage each year via capital allowances. The most common allowance is Annual Investment Allowance (AIA), which lets you claim up to £1 million of capital spending in a single tax year — a huge tax break if you're planning a large equipment purchase. Beyond £1 million, you use the main rate (19% per year) or special rate (6% per year) write-down.

This means if you buy a £50,000 piece of machinery in April, you can claim the full £50,000 against this year's profit under AIA (if you haven't already used your £1 million limit). But if you'd claimed it under the main rate instead, you'd only claim £9,500 in year one, £7,705 in year two, and so on.

This changes the equation for timing. If you're having a profitable year and want to reduce tax, buying equipment before year-end and using AIA is extremely tax-efficient. Your accountant will advise whether this makes sense given your cash flow and long-term plans.

Understanding R&D tax credits is another angle — if your company develops new products or improves existing ones, you might claim thousands back through R&D relief, separate from normal expenses.

Frequently Asked Questions

Q: Can I claim my home office if I own my house but the company pays rent? A: Yes, but the structure matters. If you've structured it properly with your accountant, rent paid by the company for a home office is deductible by the company and is income to you personally (likely on a Schedule C or similar). Alternatively, you can claim the simplified allowance (£4–£6 per week) without needing a formal rental agreement. The first option gives higher deductions but more admin; the second is simpler but smaller. Ask your accountant which makes sense for your circumstances.

Q: I bought a company car for £35,000. Can I claim the full cost immediately? A: No, it goes through capital allowances. You can claim up to £1 million of capital purchases under Annual Investment Allowance in a tax year, so if it's your only capital purchase, yes, you claim the full £35,000 in that tax year. If you've already used your AIA allowance on other equipment, the car is depreciated at 19% per year under the main rate. Check with your accountant whether you're within your AIA limit.

Q: Can I claim my professional fees (accountant, solicitor)? A: Yes, fees for business advice are fully deductible. This includes accountancy for preparing your accounts, tax advice from a tax consultant, solicitor fees for contracts and legal advice related to the business, and payroll services. Keep invoices as proof.

Q: What about entertaining clients? A: You cannot claim the cost of entertaining clients, customers, or business contacts — meals, events, gifts, nothing. The exception: staff entertaining (team meals, Christmas parties under £150 per person) is claimable. This trips up many business owners because it feels like a business expense, but HMRC is clear: client entertaining is not deductible.

Q: I use my internet connection for business and personal use. Can I claim it? A: Yes, but only the business portion. If it's 50% business and 50% personal, claim 50% of the bill. Keep a brief record (not detailed time tracking, just a rough estimate) so you can justify the percentage if HMRC asks. You don't need to be exact, but it should be reasonable.

Q: Do I need to keep receipts for everything? A: Yes. HMRC can investigate up to 4 years back (6 years if carelessness is suspected), and if you're audited without receipts, you can't claim the expense. Bank statements alone aren't enough for large or unusual expenses. Digital copies are fine; you don't need paper. Most accountants request you keep records for 6 years minimum.

Q: I'm comparing limited company vs sole trader — are the expenses different? A: The types of expenses you can claim are largely the same. The difference is in the structure and tax rates. As a sole trader, you claim expenses on your Self Assessment tax return. As a limited company, the company claims expenses (reducing Corporation Tax), and you personally claim dividends and salary (subject to Income Tax and National Insurance). For a comparable income level, the limited company structure often saves tax, particularly at higher incomes, once you factor in both expense deductions and the different tax treatment of profits.

Q: What happens if I claim an expense and HMRC disagrees? A: They can disallow it and charge you the unpaid tax plus interest and penalties. If the disallowance is large or part of a pattern, the penalty can be substantial — up to 100% if they believe you've deliberately understated your profit. That's why documentation and a reasonable interpretation of the rules matter. When in doubt, ask your accountant or check HMRC's detailed guidance online.

Q: Are there any expenses I might be missing? A: Yes — many. Small business tax deductions you might be missing covers ground that even experienced business owners overlook: professional subscriptions, home office apportionment, software costs, training, and less obvious items. It's worth a read.

Keep meticulous records, claim everything you're entitled to, and don't claim what you're not. That balance is where your accountant earns their fee.