How to Cut Your Corporation Tax Bill in 5 Steps
As a limited company owner, you’re legally obliged to pay Corporation Tax on your taxable profits — but that doesn’t mean you should pay more than you have to.
Fortunately, there are several completely legal and HMRC-approved ways to reduce your Corporation Tax liability. Whether you’re running a small consultancy, a growing e-commerce business, or managing a portfolio of companies, these five strategies could help you save thousands each year.
Here’s how to legitimately cut your Corporation Tax bill.
1. Claim All Allowable Business Expenses
This is the most basic — and most commonly overlooked — method to reduce your tax bill.
Any expense that is “wholly and exclusively” for the purpose of running your business can usually be deducted from your taxable profits. Lower profits = lower Corporation Tax.
Allowable expenses may include:
- Office rent, utilities, and broadband
- Wages and salaries
- Employer’s National Insurance contributions
- Staff training and CPD
- Subcontractor costs
- Business insurance
- Accounting and legal fees
- Software subscriptions
- Travel and accommodation (for business)
- Use of home as office
- Business mileage
Tip: Keep clear digital records of receipts and invoices. HMRC may ask for evidence during an enquiry.
2. Use Capital Allowances Wisely
When your company purchases equipment, vehicles, tools or computers, these items are classed as capital assets — and you may be able to deduct their cost using capital allowances.
The most generous scheme is the Annual Investment Allowance (AIA), which allows you to deduct the full cost of qualifying assets from your profits — up to £1 million.
Qualifying assets include:
- Computers and IT equipment
- Office furniture
- Commercial vehicles (vans, trucks)
- Machinery and plant
- Fixtures and fittings
From April 2023, companies investing in new qualifying main-rate equipment can also benefit from full expensing, giving 100% relief in the year of purchase.
Caution: Cars do not qualify for AIA but may be eligible for other forms of writing down allowances.
3. Pay Yourself Tax-Efficiently
How you pay yourself as a director can have a big impact on your Corporation Tax.
Paying a salary is a business expense and reduces profits — and therefore reduces your tax bill. However, high salaries come with National Insurance liabilities.
A common tax-efficient strategy is to:
- Pay a salary up to the NIC threshold (currently £12,570 per year)
- Draw the rest of your income through dividends, which are not a company expense but attract lower personal tax
Note: Dividends can only be paid from retained profits after Corporation Tax, so this won’t reduce the company’s liability — but smart planning can reduce your overall tax bill.
Also consider:
- Making pension contributions: These are tax-deductible for the company
- Using benefits-in-kind tax efficiently (e.g., electric company cars, mobile phones)
Speak to a qualified accountant or advisor to set the right mix based on your income needs and company profitability.
4. Claim R&D Tax Credits (If Eligible)
If your company is developing new products, processes, or software, or improving existing ones, you could qualify for Research & Development (R&D) tax relief — even if your project wasn’t successful.
Under the R&D tax relief scheme, eligible small and medium-sized enterprises (SMEs) can claim an enhanced deduction of qualifying R&D costs — typically up to 186% of the actual spend.
This means:
- You reduce your taxable profits
- Or you receive a cash credit if the company made a loss
R&D tax relief can cover:
- Staff wages
- Prototyping and testing
- Software and subcontractors
- Consumables used in R&D
This area is complex, and claims are now more tightly scrutinised by HMRC, so professional advice is strongly recommended.
5. Make Use of Loss Relief
If your company makes a loss, you can often carry it forward or back to reduce tax on profits in other years.
This can be especially helpful for start-ups or companies investing heavily in growth. The key is knowing how and when to apply the relief.
Types of loss relief include:
- Carry forward losses against future profits
- Carry back losses to reclaim tax from prior profitable years (up to 3 years back in some cases)
- Group relief if you operate multiple companies under one group
The rules can vary depending on the type of loss (trading loss vs. capital loss), so accurate record-keeping and timely tax returns are critical.
Bonus Tip: Keep Digital and Compliant
While not a tax-saving tip in itself, maintaining accurate, real-time digital accounting records will help ensure that:
- You never miss a claimable expense
- You stay compliant with Making Tax Digital rules
- You can identify opportunities for savings throughout the year
Using cloud accounting software like Xero, QuickBooks, or FreeAgent can help automate this and streamline your reporting to HMRC.
Final Thoughts
There is no need to overpay Corporation Tax if you’re running a legitimate, well-managed business. The five strategies outlined here — claiming all expenses, using capital allowances, structuring your income tax-efficiently, claiming R&D tax relief, and utilising loss relief — are all perfectly legal ways to reduce your tax bill.
However, the right combination will depend on:
- The structure of your business
- Your current profit position
- Your future plans (growth, investment, exit)
That’s where we come in.
How Merranti Accounting Can Help
At Merranti Accounting, we go beyond compliance. We help businesses like yours make smart decisions that reduce tax, improve cash flow, and support growth.
We offer:
- Tax-efficient business structuring
- Year-round tax planning (not just once a year)
- Expert R&D claim support
- Payroll, dividend, and director remuneration advice
- Strategic group and loss management
Speak to our team today to review your current tax position and identify where you can legally cut your Corporation Tax bill.
