Maximising Tax Efficiency: A Comprehensive Guide to Business Expenses for Limited Companies

Running a limited company gives you more control over how your business is taxed, managed and planned. But it also brings more responsibility. One area that often causes confusion is business expenses.

Claiming the right expenses can reduce your company’s taxable profit and help you manage cash flow more effectively. Missing valid claims can mean paying more Corporation Tax than you need to. Claiming costs incorrectly can also lead to problems if HMRC asks questions later.

The aim is not to push the rules. It is to understand what your company can claim, keep proper records and make sensible decisions during the year.

If you want support with expenses, records and tax planning, working with experienced accountants in Nottingham can help you keep things clear and compliant.

What counts as a business expense?

A business expense is a cost your limited company incurs for the purpose of running the business. For tax purposes, the main test is whether the expense is wholly and exclusively for business use.

That phrase matters. If a cost has a personal element, it may not be fully allowable. In some cases, you may need to split the cost between business and personal use. In others, it may need to be treated as a benefit-in-kind, director’s loan account entry or salary-related item.

Common allowable expenses for limited companies include:

• Office rent, utilities and business rates
• Accountancy and professional fees
• Business insurance
• Software and subscriptions
• Marketing and advertising
• Staff wages and employer pension contributions
• Business travel and mileage
• Training linked to your trade
• Equipment used by the company
• Phone and internet costs for business use

The cleaner your records are, the easier it is to support each claim. Regular bookkeeping can make this much easier, especially once your business has regular supplier bills, staff costs or VAT returns.

Why expenses matter for Corporation Tax

Your limited company pays Corporation Tax on taxable profits. For the 2026 financial year, the UK has a small profits rate of 19% for companies with profits up to £50,000 and a main rate of 25% for companies with profits over £250,000. Marginal Relief may apply where profits fall between those limits.

This means legitimate expenses can directly reduce the profit your company is taxed on. For example, a genuine £1,000 business expense could reduce your company’s taxable profit by £1,000. The actual tax saving depends on your company’s profit level, associated companies and wider circumstances.

That does not mean you should spend money just to save tax. Spending £1,000 to save a smaller amount of tax still reduces cash in the business. The better approach is to claim the costs your company genuinely needs and avoid missing expenses you are entitled to include.

Your company tax returns should reflect the real position of the business, not a rushed year-end tidy-up.

Typical expenses limited companies can claim

Some expenses are straightforward. Others need more care. This simple table gives you a practical starting point.

Using software properly can also help reduce errors. If your company uses Xero, professional Xero bookkeeping can help keep costs organised and easier to review.

Travel, mileage and working from home

Business travel can be claimed where the journey is genuinely for work. This might include visiting clients, travelling to a temporary workplace, attending business meetings or going to training linked to your company’s work.

For the 2026/27 tax year, the approved mileage rate for cars and vans is 55p per mile for the first 10,000 business miles, then 25p per mile after that. Motorcycles are 24p per mile and bicycles are 20p per mile.

You should keep a proper mileage log showing:

• Date of the journey
• Start and end location
• Reason for the trip
• Number of business miles
• Vehicle used

Working from home can also create allowable costs. If you only work from home occasionally, a simple claim may be enough. If you use part of your home regularly for business, you may need a more detailed calculation covering a fair proportion of costs such as heat, light and broadband.

The key is to be reasonable. A modest, well-supported claim is much better than an inflated figure that cannot be explained.

Director expenses and personal costs

Directors often pay for company costs personally and reclaim them later. This is common and usually fine, as long as the cost belongs to the company and the record is clear.

For example, if you pay for a business subscription on your personal card, the company can usually reimburse you if the subscription is wholly for business use. If you use the company card for a personal purchase, that should be recorded properly. It may affect your director’s loan account or create tax issues.

This is where messy records can become stressful. Regular reviews through annual statutory accounts support can help identify issues before they become bigger problems.

Payroll, pensions and staff costs

If your company employs staff, wages are usually an allowable business expense. Employer National Insurance, employer pension contributions and staff training can also be allowable where they relate to the business.

The important part is processing everything correctly. Payroll errors can affect PAYE, pension deductions, Real Time Information submissions and year-end reporting.

If you employ staff, or even if you run a directors-only payroll, professional payroll services can help keep everything aligned.

VAT and expenses

VAT adds another layer to expense management. You must usually register for VAT if your taxable turnover for the last 12 months goes over £90,000. You may also choose to register voluntarily before reaching the threshold, depending on your customers, costs and growth plans.

Once registered, you may be able to reclaim VAT on certain business purchases. The rules depend on the type of cost, whether the supplier has charged VAT correctly, and whether the expense is used for taxable business activity.

For example, VAT on many business software, equipment and professional fee invoices may be recoverable if you have a valid VAT invoice. VAT on business entertainment is usually blocked.

This is why well-managed VAT return services can be valuable, especially if your company is growing or dealing with property, imports, mixed supplies or unusual transactions.

Start-ups and early-stage companies

New directors often miss expenses in the early stages because everything feels informal. You might buy a laptop, pay for a domain name, use your personal phone, drive to meetings or pay for branding before your systems are fully set up.

These costs can still matter. If they relate to the company, keep the receipts and record them properly.

If you are still setting up, business start-up accountants can help you decide what should go through the company, how to pay yourself and how to avoid mixing personal and business spending.

Record keeping matters more than you think

UK limited companies must keep company and accounting records. In practice, you should keep tax and company records for 6 years from the end of the financial year they relate to, and sometimes longer if required.

This includes invoices, receipts, bank statements, payroll records, VAT records, mileage logs, contracts and evidence supporting business use.

A receipt in a drawer is better than nothing. But a digital system is much better. If HMRC asks questions later, you want to be able to find the answer quickly.

If your finance admin is growing beyond what you can manage internally, an outsourced finance department can give you stronger controls without hiring a full in-house team.

Do not forget company admin

Tax efficiency is not only about expenses. Your company also needs good admin. That includes maintaining company records, filing confirmation statements, keeping director details up to date and making sure statutory responsibilities are handled properly.

Strong company secretarial services help keep the company side tidy, while your accountant focuses on the numbers.

When personal tax also matters

Business expenses reduce company profits, but directors still need to think about personal tax. Salary, dividends, benefits, rental income and other income streams can all affect your wider position.

This is especially important if you take dividends, own property, have income outside the company or use company assets personally. In those cases, personal tax returns and company tax planning should work together.

Property companies may also need specialist advice from property tax accountants, especially where VAT, finance costs, repairs and capital improvements overlap.

Final thoughts

Claiming limited company expenses is not about being aggressive. It is about understanding the rules, keeping good records and making sure your business does not pay more tax than it needs to.

The best time to review expenses is not 2 weeks before your accounts are due. It is throughout the year, while decisions are still fresh and records are easier to find.

If you want clear advice on allowable expenses, Corporation Tax, VAT, payroll or company accounts, contact FHP Accounting today. The team can help you keep your limited company compliant, organised and tax efficient.

Kellee Quigley

I lead FHP Accounting, an accountancy practice specialising in Commercial and Residential Property Accounting. Our goal is to make the administration of running property portfolios easier for landlords, managers, and investors — allowing you to focus on what you do best, while we take care of everything behind the scenes.