TL;DR: Limited Company Expenses

If you run a limited company, you can reduce your corporation tax bill by claiming allowable business expenses. These must be wholly and exclusively for business purposes.

Here’s what matters most:

• Claim all legitimate business expenses to reduce your taxable profit
• Only claim costs that are not a personal expense
• Keep detailed records of all costs incurred
• Use accounting software to track expenses efficiently
• Larger purchases may qualify for capital allowances instead of standard deductions

Put simply, the more valid expenses your company can claim, the lower your tax bill will be.

What Expenses Can a Limited Company Claim?

Below is a quick-reference table of the most common allowable expenses your limited company can claim for tax relief.

Expense Category	Examples	Tax Treatment
Office & running costs	Rent, utility bills, office supplies, internet	Tax deductible
Working from home	Household expenses, additional household costs, office space use	Partially deductible (business element only)
Travel expenses	Business travel, trains, flights, accommodation	Tax deductible
Mileage	Business mileage using HMRC rates	Tax deductible
Salaries & wages	Employee pay, bonuses	Tax deductible
Employer costs	Employer’s National Insurance contributions, pensions	Tax deductible
Professional fees	Accountancy fees, legal fees, financial adviser	Tax deductible
Insurance	Business insurance, public liability insurance, professional indemnity insurance	Tax deductible
Equipment & tools	Computers, machinery, work equipment	Capital allowances apply
Software & subscriptions	Accounting software, SaaS tools, cloud platforms	Tax deductible
Mobile phone	Business mobile phone contracts	Tax deductible
Training	Work-related training courses	Tax deductible
Marketing	Ads, website costs, branding	Tax deductible
Pension contributions	Payments via a pension provider	Tax efficient (tax relief applies)

Running a limited company comes with a major advantage: the ability to reduce your corporation tax bill by claiming allowable expenses. But knowing exactly what counts as a legitimate business expense and what doesn’t is where many company directors get it wrong. Many of them end up searching for accountants near me to get their expenses in order.

Put simply, limited company expenses are costs your business incurs for business purposes. When these expenses are considered tax deductible, they reduce your taxable profit, meaning you pay less corporation tax overall.

However, not all business expenses qualify. HMRC requires that costs are wholly and exclusively for business use and this rule is critical.

In this guide, we’ll break down:

• What expenses you can claim
• What you can’t
• And how to maximise tax relief while staying compliant

What Are Limited Company Expenses?

Limited company expenses are the business expenses your company incurs while operating and generating income. These are costs that your limited company can use to reduce its taxable profit, helping lower your overall tax bill.

Expenses for limited companies include a range of allowable costs, such as pensions, payroll fees, accountancy fees, and employer contributions, which can be claimed for tax relief purposes.

To qualify as allowable expenses, the cost must be:

• Incurred for business purposes
• Not primarily a personal expense
• Justifiable as a legitimate business expense

Key allowable expenses for limited companies include staff salaries, office costs, marketing, travel, professional fees, and business insurance.

The key rule set by HM Revenue and Customs is that expenses must be wholly and exclusively for business use. This means if there’s any personal element, you can usually only claim the business element of that cost.

For example:

• Office supplies used only for work are fully tax deductible
• A mobile phone used for both personal and business is partially allowable
• Everyday personal spending is not allowed

Understanding this distinction is essential. Claiming the wrong expenses can increase your tax bill or lead to penalties, while claiming correctly ensures your company benefits from all available tax relief.

Why Claiming Expenses Matters (Tax Savings Explained)

Claiming limited company expenses correctly is one of the simplest ways to reduce how much corporation tax your business pays.

When your limited company earns income, it is taxed on its taxable profit, not total revenue. This means every valid, tax deductible expense you claim reduces the company’s profits and lowers your final corporation tax bill.

For example:
If your company earns £80,000 and has £20,000 in allowable expenses, you’ll only pay corporation tax on £60,000.

This is where tax relief becomes powerful. By ensuring all legitimate business expenses are included, your company can:

• Reduce its overall tax bill
• Improve cash flow
• Reinvest more into growth

It’s also important to understand the link to personal tax. If your company pays for certain costs directly, it can reduce the need to pay out income that would otherwise be taxed personally.

In short, knowing how to claim tax relief properly ensures your company keeps more of what it earns while staying fully compliant.

The Rules: What Makes an Expense Allowable?

Before you claim expenses, it’s essential to understand what makes a cost an allowable expense for a limited company. The rules are strict, and getting them wrong can lead to a higher tax bill or rejected expense claims.

The core principle is that any tax deductible expense must be wholly and exclusively for business use. In other words, the cost must be directly related to running your business and not for personal benefit.

Key rules to follow:

1. Wholly and exclusively
   The expense must be incurred entirely for business purposes. If there’s a personal element, only the business element can be claimed.
2. Directly linked to business activity
   The costs incurred must support your company’s operations such as generating income or maintaining business functions.
3. Not a personal expense
   Anything primarily for personal use cannot be treated as a legitimate business expense.
4. Proper documentation
   You must keep detailed records of all expense claims, including receipts and invoices.

Example:

• A laptop used only for work is fully allowable
• Home internet used for both is partially allowable
• Personal shopping is not allowed

Following these rules ensures your limited company only claims allowable expenses that qualify for tax relief, keeping everything compliant for tax purposes.

Common Limited Company Expenses You Can Claim

Understanding the most common limited company expenses helps ensure your company can claim everything it’s entitled to while staying compliant. Below are the main categories of allowable expenses your limited company can include to reduce its corporation tax bill.

Office & Running Costs

If your business operates from an office space or business premises, many day-to-day business costs are tax deductible.

These include:

• Rent and rental costs
• Utility bills such as electricity and internet
• Office supplies and equipment
• A proportion of household expenses if working from home

If you work from home, your company may cover additional household expenses, provided there is a clear business element. In some cases, a commercial rental agreement can be used between you and your company.

Travel and Mileage Expenses

Travel expenses are a key category of allowable expenses, but only when the journey is for business purposes.

Your company can claim:

• Travel costs such as trains, taxis, and flights
• Accommodation for business trips
• Mileage expenses for using a personal vehicle

You can also claim mileage expenses based on HMRC rates for business mileage. These must relate to genuine business journeys, not commuting to a permanent workplace.

Salaries, Employees and Staff Costs

If your limited company employs staff, a wide range of employee expenses are tax deductible.

These include:

• Salaries and bonuses
• Employer’s National Insurance contributions
• Pension contributions through a pension provider

Your company must ensure all payments align with an employment contract, and that any costs employees incur on behalf of the business are properly reimbursed and recorded.

Professional Services and Fees

Many businesses rely on external expertise, and these costs count as allowable expenses.

Typical professional fees include:

• Accountancy fees and accountancy fee expenses
• Legal fees for contracts or disputes
• Support from a financial adviser

These professional services, including other professional fees, are usually fully tax deductible when they relate directly to business operations.

Insurance Costs

Insurance is often essential, and most policies qualify as legitimate business expenses.

Examples include:

• Business insurance
• Public liability insurance
• Professional indemnity insurance

These protect your company and are fully tax deductible when used for business purposes.

Equipment, Tools and Capital Expenses

Some purchases are treated as a capital expense rather than a standard business expense. This typically applies to larger, long-term assets like computers or machinery.

Instead of claiming the full cost immediately, your limited company may use capital allowances to spread the tax deduction over time or claim it upfront under schemes like the Annual Investment Allowance.

Your company can claim:

• Office equipment
• Tools and machinery
• Work-related technology

Understanding the difference between capital expenses and everyday costs is key to maximising tax relief.

Communication & Software

Modern businesses rely heavily on digital tools, many of which are tax deductible expenses.

These include:

• A business mobile phone
• Subscriptions to accounting software
• Cloud tools and platforms

If your company pays for these services directly, they are usually fully allowable provided they are used for business purposes.

Training and Development

Investing in skills is another area where your limited company can claim expenses.

Allowable expenses include:

• Work-related training courses
• Professional development linked to your role

To qualify for tax relief, the training must be relevant to your current business activities and not a new trade or career.

Marketing and Advertising

Promoting your business is essential, and most marketing costs are tax deductible.

Examples include:

• Online advertising
• Website development
• Branding and design

As long as these costs incurred are for business purposes, your company can claim them as allowable expenses.

Expenses You Cannot Claim

While many limited company expenses are allowable expenses, there are clear limits on what your limited company can claim. Understanding what’s not permitted is just as important to avoid increasing your tax bill or triggering issues with HM Revenue and Customs.

The main rule remains that if a cost is primarily a personal expense, it is not a tax deductible expense.

Common non-allowable expenses include:

• Everyday personal spending such as food, clothing, and gym memberships
• Costs not incurred for business purposes
• Fines or penalties
• Most forms of business entertainment, such as entertaining clients

Although entertaining clients may seem like a legitimate business expense, HMRC generally does not allow this for tax purposes. This means your company cannot use these costs to reduce its corporation tax.

Mixed-use expenses

If a cost has both personal and business use, only the business element may be claimed. The personal portion must be excluded.

Failing to separate these correctly can lead to incorrect expense claims, increasing your tax bill and risking penalties. Staying clear on this distinction ensures your company only claims what it is genuinely able to claim.

Capital Allowances Explained (Important for Tax Savings)

Not all limited company expenses are treated the same. When your limited company purchases larger assets, these are usually classified as a capital expense rather than day-to-day business expenses.

Instead of deducting the full cost immediately, your company uses capital allowances to reduce its taxable profit over time, helping lower your corporation tax bill.

What are capital allowances?

Capital allowances let your limited company claim tax relief on assets such as:

• Computers and office equipment
• Machinery and tools
• Business vehicles in some cases

In many situations, schemes like the Annual Investment Allowance allow your company to claim the full cost upfront, giving an immediate tax deduction.

Why this matters

Using capital allowances correctly can:

• Reduce your tax bill significantly
• Improve cash flow
• Ensure your company’s profits are calculated accurately

It’s important to distinguish between a standard tax deductible expense and a capital expense, as the treatment for tax purposes is different. Getting this right ensures your business continues to gain tax relief efficiently and stays compliant.

Working From Home Expenses for Directors

If you run your limited company from home, you may be able to claim a portion of your household expenses as allowable expenses, provided there is a clear business element.

For many company directors, this is one of the most commonly overlooked areas of tax relief.

What can your company pay?

Your company pays for costs linked to business use of your home, such as:

• A share of utility bills such as electricity, heating, and internet
• Rent or mortgage interest in specific setups
• Other additional household expenses tied to business use

There are typically two approaches:

• A simplified flat-rate method
• Claiming actual costs incurred based on usage

In some cases, a commercial rental agreement can be set up between you and your limited company, allowing the company to pay rent for using part of your home as an office space.

To remain compliant, ensure all amounts are reasonable and clearly linked to business purposes, with proper recording of expenses and supporting evidence.

Managing Limited Company Expenses

Setting up expense policies

Establishing clear expense policies is a crucial first step for any limited company aiming to manage its business expenses effectively. A well-defined policy outlines exactly what counts as an allowable expense, ensuring that every cost claimed is a legitimate business expense and meets HMRC’s requirements. This helps your company stay compliant and maximizes the tax relief available, directly reducing your corporation tax bill.

Tracking and monitoring expenses

Accurate tracking and monitoring of business expenses are essential for any limited company looking to claim tax relief and stay on top of its finances. By systematically recording every expense, whether it’s for travel, business insurance, accountancy fees, or other professional services, you ensure that only costs incurred wholly and exclusively for business purposes are claimed.

Using expense management tools

Modern expense management tools can transform the way your limited company handles business expenses. From simple spreadsheets to advanced accounting software and mobile apps, these tools make it easy to track, record, and submit expense claims in real time. By automating much of the process, you reduce administrative workload and minimize the risk of errors or missed claims.

How to Claim Limited Company Expenses

To benefit from limited company expenses, you need a clear and consistent process for recording and submitting expense claims. Done correctly, this ensures your limited company can claim everything it’s able to claim while staying compliant.

Step 1: Keep accurate records

All costs incurred must be supported with receipts or invoices. Maintaining detailed records is essential for HMRC and helps avoid issues with your tax bill.

Step 2: Separate business and personal spending

Use a dedicated business account so it’s easier to track expenses and avoid mixing in any personal expense.

Step 3: Record expenses properly

Consistent recording of expenses, either manually or using accounting software, ensures nothing is missed and all allowable expenses are captured.

Step 4: Submit through your accounts

Your accountant will include your business expenses when preparing your company accounts and calculating your corporation tax.

In some cases, directors may also need to report certain employee expenses or benefits through a self assessment tax return, depending on how the expense is handled.

Personal vs Company Tax: What You Need to Know

Understanding the difference between company and personal tax is key when dealing with limited company expenses.

When your limited company pays for a tax deductible expense, it reduces the company’s taxable profit and lowers its corporation tax bill. However, if a cost is considered a personal benefit, it may create a personal tax liability instead.

For example:

• If your company pays for something purely business-related, there is no personal tax
• If there’s personal use involved, it may be treated as a benefit in kind

In some cases, you may need to claim personal tax relief separately, depending on how the expense is structured.

It’s important to ensure expenses are correctly categorised. Mixing business and personal spending incorrectly can increase both your company’s tax bill and your own personal tax obligations.

Handled properly, your limited company can cover many costs efficiently, helping you reduce both corporate and personal tax exposure.

Tips to Maximise Tax Efficiency

Making the most of limited company expenses isn’t just about claiming costs. It’s about claiming them strategically to maximise tax relief and reduce your overall tax bill.

1. Claim everything you’re entitled to

Many directors miss smaller allowable expenses. Make sure your limited company captures all relevant business expenses it is able to claim.

2. Use accounting tools

Reliable accounting software helps you track expenses, automate expense claims, and avoid missing key deductions.

3. Plan larger purchases

Timing capital expenses correctly can increase your use of capital allowances, helping your company claim more upfront and reduce corporation tax.

4. Get expert advice

Working with an accountant or financial adviser ensures your limited company expenses are structured efficiently and fully compliant.

5. Consider long-term benefits

Using options like pension contributions through a pension provider or schemes such as the tax free childcare scheme can help you further gain tax relief.

FAQ: Limited Company Expenses

What expenses can I claim through a limited company?

There are many expenses you can claim, including office costs, travel expenses, salaries, professional fees, and software. As long as they qualify as allowable business expenses and are used for business purposes, your company can claim them and reduce its taxable profit.

Are travel expenses tax deductible?

Yes, most travel expenses are a tax deductible expense if they relate to business travel. This includes travel costs, accommodation, and business mileage. However, commuting to a regular workplace is not considered allowable.

Can I claim rent or working from home costs?

Yes, your limited company can contribute towards household expenses if you work from home. This includes a portion of utility bills and other relevant costs, as long as there is a clear business element and the expense is not purely a personal expense.

Can a company director claim personal costs?

No. A personal expense cannot be treated as a legitimate business expense. However, if a cost has both personal and business use, the business element may still be claimed.

What counts as a legitimate business expense?

A legitimate business expense is any cost that is incurred wholly and exclusively for business use. If your limited company expenses meet this rule, they are usually tax deductible and help reduce your overall corporation tax bill.