How to Reduce Your Corporation Tax Bill Legally (UK Guide 2026)

Paying Corporation Tax is unavoidable — overpaying isn't.

If you run a limited company in the UK, there are fully legal, HMRC-compliant ways to reduce your Corporation Tax bill.

This guide explains the most effective tax saving strategies used by smart business owners across Wolverhampton and the West Midlands.

Claim All Allowable Business Expenses

The simplest way to reduce Corporation Tax is to ensure you're claiming all business expenses that are wholly and exclusively for your company.

Common allowable expenses include:

• Rent or home office costs (proportionate to business use)
• Software and subscriptions (accounting software, CRM tools, etc.)
• Professional fees (accountant, solicitor, consultants)
• Travel and mileage (business trips only)
• Equipment (laptops, phones, office furniture)

Missing even small expenses throughout the year increases your tax bill unnecessarily.

Pay Yourself Tax Efficiently

Most accountants in Wolverhampton recommend using a combination of:

• Salary (paid within personal allowance and National Insurance thresholds)
• Dividends (for remaining income extraction)

This approach reduces overall tax liability compared to salary-only extraction, as dividends are taxed at lower rates and don't attract National Insurance contributions.

For 2026/27, consider:

• Setting salary at the personal allowance threshold (£12,570)
• Extracting remaining profits as dividends
• Planning dividend payments across tax years

2026 Dividend Tax Rates

Dividend allowance: £500

Dividend tax rates (from April 2026):

• Basic rate: 10.75%
• Higher rate: 35.75%
• Additional rate: 39.35%

While dividends reduce National Insurance, they are paid from post-tax profits. The optimal strategy is finding the right balance between salary and dividends.

Extraction Method Comparison

Use Capital Allowances

Capital allowances allow you to claim tax relief on business assets and equipment:

• Laptops and computers
• Office furniture
• Machinery and tools
• Vehicles (subject to specific rules)

The Annual Investment Allowance (AIA) allows you to deduct the full value of qualifying assets (up to £1 million) from your profits before tax.

Limited companies can also use Full Expensing, allowing a 100% deduction on qualifying plant and machinery with no upper limit.

With writing-down allowances reducing to around 14% from April 2026, upfront relief through AIA or Full Expensing is more valuable than ever.

A new 40% First-Year Allowance (FYA) may apply in certain cases, particularly for leased assets.

Strategic timing of asset purchases before year-end can significantly reduce your Corporation Tax bill.

Contribute to a Pension

Employer pension contributions are one of the most tax-efficient strategies for limited company owners:

• Reduces Corporation Tax as contributions are fully deductible
• Builds long-term wealth with tax-free growth
• No National Insurance on employer contributions
• Annual allowance of £60,000 (2026/27)

Consult with a qualified accountant to structure contributions optimally.

💡 Pro Tip: Pension contributions must be physically paid before your company year-end to qualify for Corporation Tax relief. Accruing them in accounts is not sufficient.

Use Loss Relief

If your company makes a loss, you can use it to reduce tax in several ways:

• Carry back losses to offset against previous year's profits (claim refund)
• Carry forward losses to reduce future Corporation Tax bills
• Group relief if you have multiple companies

This is particularly valuable for start-ups or businesses investing heavily in growth.

Claim R&D Tax Relief

Under the Merged R&D Scheme, businesses can claim a taxable credit (around 20%) on qualifying innovation expenditure.

If your company is 'R&D Intensive' (spending 30%+ of total costs on R&D), you may qualify for enhanced support under ERIS (Enhanced R&D Intensive Support).

Qualifying R&D activities include developing new products, processes, or services that advance knowledge or capability in your field.

Plan Timing of Income & Expenses

Strategic corporation tax planning includes timing:

• Delay invoicing near year-end to defer income (if cash flow permits)
• Accelerate expenses by purchasing before year-end
• Make large investments before accounting period closes
• Time contract commencement to spread income across tax years

Understand Corporation Tax Rates (2026/27)

UK Corporation Tax operates on a tiered system:

• 19% – Small Profits Rate (profits up to £50,000)
• 25% – Main Rate (profits over £250,000)
• Marginal relief – Applies to profits between £50,000 and £250,000

Proper planning can keep you within lower tax bands or reduce your effective rate through marginal relief.

⚠️ Warning: If you run multiple 'associated companies', the £50,000 and £250,000 profit thresholds are split between them. This can push you into higher tax rates sooner.

💡 If you own multiple companies, tax planning should be done across your entire group, not individually.

Marginal Relief Quick Reference

Common Corporation Tax Mistakes to Avoid

Many business owners unknowingly increase their tax bill by:

• Missing allowable expenses (lack of proper record-keeping)
• Poor tax planning (reactive rather than proactive approach)
• Mixing personal and business spending (non-allowable expenses)
• Missing deadlines (resulting in penalties and interest)
• Not seeking professional advice for tax advice for limited companies

Frequently Asked Questions