How Small Businesses Can Effectively Reduce Corporation Tax in the UK in 2026

Corporation tax is a significant expense for many small businesses and limited companies in the UK. With the 2026 tax year approaching, understanding how to legally reduce your corporation tax bill can improve your business’s cash flow and profitability. This guide explains practical, clear strategies tailored for small business owners and company directors, helping you keep more of your hard-earned money while staying fully compliant with UK tax laws.

Calculating corporation tax savings for a small UK business

Understanding Corporation Tax in the UK for 2026

Corporation tax is charged on the profits your company makes. For the 2026 financial year, the main rate is set at 25% for companies with profits over £250,000. Companies with profits below £50,000 pay a small profits rate of 19%, and there is a tapered rate for profits between £50,000 and £250,000.

This tiered system means many small businesses can benefit from lower rates if they manage profits carefully. Knowing how to plan your finances and expenses can reduce your taxable profits and therefore your tax bill.

Legal Strategies to Reduce Corporation Tax

Claim All Allowable Business Expenses

One of the simplest ways to reduce corporation tax is to claim all legitimate business expenses. These reduce your taxable profits directly.

Common allowable expenses include:

• Office rent and utilities

• Business travel and vehicle costs

• Staff salaries and pensions

• Equipment and software purchases

• Professional fees such as accounting and legal services

  
  

Keep detailed records and receipts to support your claims. Avoid mixing personal and business expenses.

Use Capital Allowances for Equipment

Capital allowances let you deduct the cost of certain assets from your profits before tax. For example, buying new machinery, computers, or office furniture can qualify.

The Annual Investment Allowance (AIA) currently allows you to deduct up to £1 million of qualifying expenditure in the year of purchase. This means you can reduce your taxable profits significantly by investing in your business.

Consider Research and Development (R&D) Tax Credits

If your business develops new products, processes, or services, you may qualify for R&D tax credits. These credits can reduce your corporation tax bill or even provide a cash payment if your company is loss-making.

R&D tax relief is complex but valuable. It covers costs such as staff salaries, software, and consumables used in eligible projects. Consulting with a specialist can help you identify qualifying activities.

Pay Dividends Instead of Salaries

For company directors, paying yourself a combination of salary and dividends can reduce National Insurance contributions and overall tax liability.

Dividends are paid from post-tax profits but are taxed at lower rates than salaries. However, ensure your company has enough profits to cover dividends legally.

Use Pension Contributions

Employer pension contributions are deductible business expenses. Making contributions to your pension scheme reduces your company’s taxable profits and helps you save for retirement.

There are annual limits on pension contributions, so plan carefully to maximise benefits without exceeding thresholds.

Practical Tips to Manage Corporation Tax

Plan Your Profit Timing

If your profits are close to the £50,000 or £250,000 thresholds, consider timing income and expenses to stay within lower tax bands. For example, delaying invoicing until the next accounting period or bringing forward expenses can reduce taxable profits.

Keep Accurate Records

Good record-keeping is essential for claiming all allowable expenses and capital allowances. Use accounting software or professional services to maintain clear financial records.

Review Your Business Structure

Sometimes, restructuring your business can reduce tax. For example, setting up a holding company or splitting activities into separate companies may offer tax advantages. This requires professional advice to ensure compliance.

Examples of Corporation Tax Savings

• A small IT consultancy invests £50,000 in new computers and software. Using the Annual Investment Allowance, it deducts the full amount from profits, saving £12,500 in corporation tax at 25%.

• A limited company director pays themselves a salary of £12,570 (personal allowance) and takes the rest as dividends. This reduces National Insurance and overall tax compared to a higher salary.

• A manufacturing business claims R&D tax credits for developing a new product, reducing its corporation tax bill by £15,000.

  
  

How Barnett & Co Can Help You Reduce Corporation Tax

At Barnett & Co, we specialise in helping small businesses and limited companies navigate UK tax rules. Our accounting and tax services include:

• Detailed tax planning and corporation tax advice

• Assistance with claiming capital allowances and R&D tax credits

• VAT planning and compliance

• Internal audit services to ensure financial accuracy and control

  
  

We work closely with you to identify all opportunities to reduce your tax bill legally and efficiently.

Get a Free Tax Savings Review today to discover how much you could save on your corporation tax in 2026.

Frequently Asked Questions

What is the corporation tax rate for small businesses in 2026?

Small businesses with profits under £50,000 pay 19%. Profits between £50,000 and £250,000 are taxed at a tapered rate up to 25%. Profits above £250,000 are taxed at 25%.

Can I claim expenses for my home office?

Yes, if you use part of your home exclusively for business, you can claim a proportion of household costs such as heating, electricity, and internet.

How do R&D tax credits work?

R&D tax credits reduce your corporation tax bill based on qualifying research and development costs. If your company is loss-making, you may receive a cash payment.

Are pension contributions tax deductible?

Employer pension contributions are deductible business expenses and reduce your company’s taxable profits.

Should I pay myself a salary or dividends?

A mix of salary and dividends often reduces overall tax and National Insurance costs. The best approach depends on your company’s profits and personal tax situation.