Reduce Corporation Tax Legally for Small Businesses

Team Nomi

May 28, 2025
4 minutes read

It’s a tough time for small businesses, with rising costs from the minimum wage increase, higher National Insurance contributions and ongoing cost of living pressures squeezing margins. And that’s before we’ve even come to Corporation Tax liabilities.

If you’re running a limited company, the question of how to reduce Corporation Tax, legally and responsibly, is always top of mind. The good news is there are some smart, sustainable ways to ease your tax bill while reinvesting back into your business.

From green incentives to pensions and capital allowances, effective business tax planning can make a real difference. Here’s how small businesses can reduce their Corporation Tax liability… without cutting corners.

Make Use of Capital Allowances

Capital allowances let you deduct the cost of certain assets, like machinery, tools or even energy-efficient equipment, from your profits before tax.

One standout option is the Annual Investment Allowance (AIA), which allows businesses to claim 100% of the cost of qualifying equipment (up to £1 million) in the year of purchase. This means that if you invest in new computers, IT systems or green machinery, you could take that full amount off your taxable profits.

However, you cannot claim AIA on business cars, items you owned for another reason before using for the business and items given to you or your business.

And for businesses embracing sustainability, HMRC also offers enhanced capital allowances for low-emission vehicles and energy-saving tech, even further reducing your tax bill.

Contribute to Pension Schemes

Paying into a company pension is a great way to reward yourself and your employees and, the best part is, it’s also tax-deductible. Pension contributions made by your company count as allowable business expenses, reducing your taxable profits.

This is a powerful tool in business tax planning, you’re killing two birds with one stone:  reducing Corporation Tax and investing in long-term financial wellbeing. It’s a particularly useful way to move profits out of the company in a tax-efficient manner.

Embrace Environmental Tax Incentives

Businesses committed to sustainability can benefit from environmental tax reliefs, such as the Climate Change Levy (CCL) offers discounts for businesses using renewable energy.

By switching to greener practices, like electric vehicles, LED lighting, or more efficient heating, you can lower your carbon footprint as well as trim your tax liability. These schemes are good PR for your small business and can lead to long-term savings.

Review Your Expenses Carefully

Make sure you’re claiming for all allowable expenses, from home office costs to software subscriptions. Even smaller, recurring costs can add up over time and reduce your taxable profit.

If in doubt, it’s always a good idea to work with an accountant who understands the specifics of small business and Corporation Tax rules. It’s often worth the investment.

Plan Ahead, Not Just at Year-End

We know how easy it is for small businesses to treat tax as a once-a-year headache. But effective business tax planning works best when it’s built into your operations all year round.

Whether it’s timing asset purchases, reviewing salaries and dividends, or investing in sustainability, proactive planning will pay off and keep your tax bill under control.

Make Corporation Tax Work for Your Small Business

Reducing your Corporation Tax bill isn’t about cutting corners. It’s about working smarter. From capital allowances to pension contributions and environmental incentives, there are legal and sustainable ways to ease your tax burden while investing in the future of your business.

Need help getting started? Speak to us and explore Nomi’s tools that help with smart tax planning, expense tracking and sustainable growth.