How to Reduce Your Corporation Tax Bill: A 2026 UK Guide

You can reduce your Corporation Tax bill by claiming allowable expenses, using available tax reliefs, making employer pension contributions, claiming capital allowances, and planning major business spending on time. 

Most limited companies don't need complicated tax planning to lower their Corporation Tax. The biggest savings usually come from claiming everything you're entitled to, and keeping accurate records throughout the year. 

If you’re setting up a UK limited company, understanding these options can help you keep more profit in your business.

Key points

• Tax reliefs and allowances can significantly reduce your bill 📉
  Capital allowances, employer pension contributions, and specialist reliefs can all reduce your taxable profits. The more reliefs you qualify for, the lower your Corporation Tax bill may be.
• Planning ahead gives you more opportunities to save tax 📅
  Many tax-saving opportunities depend on timing. Bringing forward qualifying purchases or making pension contributions before your accounting period ends can help you access tax relief sooner.
• Good record-keeping helps you avoid overpaying tax 📚
  Company losses may be used to reduce tax in other accounting periods, while accurate bookkeeping helps ensure no expenses, reliefs, or opportunities are missed.
• ANNA helps you stay on top of Corporation Tax throughout the year 🚀
  With bookkeeping, expense tracking, Corporation Tax estimates, tax filing, and cash management in one place, ANNA can help you stay organised and make informed financial decisions before deadlines arrive.

How Corporation Tax works

Corporation Tax is charged on the taxable profits made by UK limited companies.

Those profits typically include:

• Trading profits from your business activities
• Investment income earned by the company
• Chargeable gains from selling business assets

For the 2026/27 tax year, the Corporation Tax rates are:

If your company has associated companies, these thresholds are usually divided between them.

💡 Did you know? 

If your company makes between £50,000 and £250,000 profit, you don’t automatically pay 25% on all of it. Marginal Relief reduces your effective Corporation Tax rate from 25% to 19%, depending on how close your profits are to the lower threshold. 

Why businesses often pay more tax than necessary

Many business owners focus on running the company, and neglect day-to-day financial admin. Small mistakes can build up over the course of a year, leading to a higher tax bill than expected.

The most common reasons businesses overpay include:

• Expenses that are miscategorised, or never recorded at the time they happen
• Personal and business spending that has become mixed, making it harder to identify what qualifies as an allowable cost
• Financial records that aren't kept up to date and have gaps by the time accounts need to be prepared
• Tax reliefs and allowances that are available but never explored
• Tax planning that only starts once the accounts are already being finalised

To make the most of available tax-saving opportunities, you should take action before your accounting period ends. Once the year has closed and the accounts have been prepared, your options are much more limited.

Reducing Corporation Tax is usually an ongoing process. Businesses that review their finances regularly are more likely to spot deductible expenses, plan major purchases, and claim available reliefs before deadlines pass. 

💡 Did you know?

ANNA's Auto Accountant automatically categorises transactions, tracks expenses, and keeps your bookkeeping up to date throughout the year. That means less time sorting receipts at year-end and a lower risk of missing deductible business costs.

Reducing your Corporation Tax bill

The steps below can reduce your Corporation Tax bill:

Claim all allowable business expenses

For many small businesses, claiming all allowable expenses is the easiest and most effective way to reduce Corporation Tax.

An allowable expense is a cost incurred wholly and exclusively for business purposes. When an expense qualifies, it can usually be deducted from your profits before tax is calculated.

Common examples include:

• Office rent and utility bills
• Business insurance
• Software subscriptions
• Professional fees
• Marketing and advertising costs
• Business travel
• Staff salaries
• Employer National Insurance contributions
• Training that relates to your existing business activities

Still, businesses often forget to record receipts on time or file them under the wrong category.

As a result, they pay tax on money that should have been deducted as a business cost. This is particularly common when directors make purchases on personal cards and forget to log them later. 

💡 Did you know? 

ANNA’s business account helps keep business transactions organised throughout the year and makes it easy to identify deductible expenses before filing your Corporation Tax return.

Make the most of capital allowances

Not every business purchase can be claimed as a day-to-day expense. When your company buys longer-term assets such as equipment, machinery, computers, or vehicles, you usually need to claim tax relief through capital allowances instead.

Capital allowances let businesses claim tax relief on qualifying assets, either immediately or over time. 

Examples of qualifying assets may include:

• Computers and laptops
• Office furniture
• Machinery and tools
• Business equipment
• Certain fixtures and fittings

For many companies, the most important relief is the Annual Investment Allowance, which allows you to deduct qualifying purchases in full during the accounting period in which they are acquired.

However, tax should never be the only reason for making a purchase. Buying something unnecessary just to reduce tax usually leaves you worse off financially. A better approach is to combine genuine business investment with effective tax planning.

Consider employer pension contributions

Pension contributions are often overlooked by company directors, despite being among the most tax-efficient ways to take money out of a business. 

When your company makes employer pension contributions on your behalf, those contributions typically count as business expenses, which can reduce your company's taxable profits.

The way you take money from your company affects the tax consequences:

• Employer pension contributions are usually treated as a business expense, so they can lower your company's taxable profits.
• Dividends are paid from profits after Corporation Tax has been calculated, so they don't reduce your Corporation Tax bill.
• Director salary will usually reduce taxable profits because it's a business expense, but you also need to consider Income Tax and National Insurance.

Many directors use pension contributions alongside salary and dividends as part of their overall tax strategy. 

The most suitable mix depends on your circumstances, income, and long-term financial goals. 

🧠 Good to know

You should pay pension contributions before your accounting period ends if you want the deduction in that period.

Check whether any specialist tax reliefs apply

Many business owners assume tax reliefs apply only to large corporations, but in reality, smaller companies may qualify for them too.

Reliefs worth checking out include:

• Research and Development (R&D) tax relief: If your company is working to resolve technological uncertainties through innovative approaches, you may qualify for this relief. And despite its name, it doesn’t require a lab or a dedicated research team – developing software, creating new products, or designing new systems all count. 
• Patent Box: If your business owns a patented invention, this scheme lets you apply a reduced 10% Corporation Tax rate to profits derived from it, rather than paying the standard rate.
• Creative Industry Tax Reliefs: If your business operates in film, animation, high-end TV, video games, theatre, or orchestral production, a dedicated relief may be available. The qualifying criteria differ between sectors, so check whether your output meets them.
• Enhanced capital allowances: If your company is investing in energy-efficient or environmentally beneficial plant and machinery, you may be able to claim relief beyond the standard Annual Investment Allowance.
• Land Remediation Relief: If your company owns or is developing contaminated land, you may be able to claim additional tax relief on the costs of cleaning it up.

Whether you qualify for these reliefs depends on your specific circumstances and the nature of your work. The rules are detailed, so it’s a good idea to speak to an accountant if you think any of these might apply.

Use losses effectively

If your company makes a loss, you may be able to use it to reduce Corporation Tax in another accounting period.

One of the most common approaches is to carry a trading loss forward and offset it against future profits. This can reduce the amount of profit subject to Corporation Tax when the business becomes profitable again.

For example, imagine your company makes a trading loss of £10,000 in one accounting period and then generates a taxable profit of £50,000 in the next. 

If you're able to carry that loss forward, you can use it to reduce the following year's taxable profit to £40,000. As a result, the company would only pay Corporation Tax on £40,000 rather than the full £50,000. 

The exact rules depend on the type of loss and when it occurred. Many business owners focus solely on profitable years, but a loss today could help reduce your Corporation Tax bill when the business returns to profit. 

Understand why timing can make a difference

One of the most overlooked aspects of Corporation Tax planning is timing. Two businesses could spend exactly the same amount of money over two years but end up with different tax outcomes depending on when that spending occurs. 

For example, you might:

• Bring forward a planned equipment purchase
• Pay pension contributions before year-end
• Review outstanding expenses before accounts are prepared
• Ensure invoices are recorded in the correct accounting period

These actions don’t change how much your business spends, but they can affect when you’re able to claim tax relief. 

For example, imagine your company is planning to buy £10,000 of new equipment and its accounting year ends on 31 March. If you buy the equipment on 25 March, you can claim the available tax relief in the current accounting period. 

However, if you buy it after 31 March, you have to wait until the next accounting period to claim tax relief. That timing difference can improve cash flow by bringing tax relief forward. 

Keep your records up to date

Proper bookkeeping underpins almost every Corporation Tax saving strategy. Without accurate records, it’s difficult to know how profitable your business is, which expenses have been claimed, whether reliefs may be available, or what your future tax bill is likely to be.

Businesses that keep their records up to date can make better financial decisions throughout the year. They can spot trends earlier, forecast liabilities more accurately, and avoid last-minute surprises.

How ANNA helps lower your Corporation Tax bill

Reducing your Corporation Tax bill starts with understanding your numbers. The easier it is to track expenses and profits, the easier it becomes to spot tax-saving opportunities before deadlines arrive.

ANNA unifies your business bank account, bookkeeping, and tax tools in one place, providing a clear view of your expenses and liabilities to keep you organised year-round. 

The following ANNA tools can help: 

• Business account: A dedicated business account that keeps company and personal spending separate, making it easy to track expenses and maintain accurate records
• Auto Accountant: Automated bookkeeping that categorises transactions and tracks expenses throughout the year, reducing manual admin and helping you stay on top of your finances
• Corporation Tax estimates: Real-time estimates that help you understand how much Corporation Tax your company owes as profits change
• Corporation Tax filing: Tools for preparing and filing Corporation Tax returns that help you manage your obligations from a single platform
• Money pots: Separate pots that let you set aside money towards future tax bills and help you prepare for payment deadlines in advance
• Payroll: Payroll tools that help keep employee and director salary records organised and up to date
• Invoicing: Built-in invoicing that allows you to create, send, and track invoices while keeping income records organised
• Free Self Assessment filing: Free Self Assessment filing for directors and sole traders who need to submit personal tax returns
• 24/7 support: ANNA’s team of professionals, who are here to help whenever you need assistance with your account, bookkeeping, or tax-related questions

Register with ANNA today and stay one step ahead of your next Corporation Tax bill.