Corporation Tax Reduction Strategies for UK Limited Companies

Most limited companies pay more corporation tax than they need to, not because of anything illegal, but because reliefs, allowances and timing opportunities are underused. Here’s what actually moves the needle.

Business owner reviewing corporation tax calculations

Why UK Companies Overpay Corporation Tax

Corporation tax is currently charged at up to 25% on company profits, with a lower 19% rate for smaller profits and marginal relief in between. Many directors treat this rate as fixed and unavoidable but the taxable profit figure it’s applied to is rarely optimised. 

Common reasons companies overpay:

  • Allowable expenses and reliefs are missed or under-claimed
  • Capital expenditure isn’t timed to make full use of allowances
  • Director remuneration is structured without considering the corporation tax impact
  • Profit is extracted or retained without a clear tax-efficient plan

Where the Opportunities Usually Sit

1. Capital Allowances

Equipment, machinery, and certain building costs can often be written off against profit faster than standard depreciation allows, directly reducing your corporation tax bill in the year you invest.

2. Director Salary and Pension Structuring

How a director is paid affects the company’s taxable profit, not just personal tax. Employer pension contributions, for example, are usually an allowable business expense reducing corporation tax while building personal retirement wealth outside of dividend or salary limits.

3. R&D Reliefs

Companies carrying out qualifying development work, including in sectors that don’t consider themselves “R&D-heavy” can often claim enhanced relief on related costs.

4. Timing of Income and Expenditure

Bringing forward planned expenditure, or adjusting the timing of invoicing near a year-end, can shift taxable profit between accounting periods in a way that reduces the overall tax paid.

5. Group Structures and Reliefs

Companies operating through multiple entities may be able to offset losses or share reliefs across the group, rather than each entity being taxed in isolation.

UK Limited Company Corporation Tax Review

A Quick Example

(Illustrative only) A company with £150,000 in annual profit, structured without any specific tax planning, could easily be paying several thousand pounds more in corporation tax each year than an equivalent company that has reviewed its allowances, remuneration structure and expenditure timing. The exact figure always depends on individual circumstances.

Common Questions

This page provides general guidance and does not constitute tax advice. Individual circumstances vary, speak to a specialist adviser before making decisions.

Is corporation tax reduction the same as tax avoidance? No. Using reliefs and allowances that Parliament has specifically created capital allowances, pension contributions, R&D relief  is standard, legitimate tax planning, not avoidance.

Do I need to change accountants to do this? Not necessarily. Tax planning of this kind usually sits alongside your existing accountant’s compliance work rather than replacing it.

Is this relevant if my company is inside IR35? Some of these reliefs still apply, though the position is more limited. It’s worth a review either way.

How much could my company actually save? This depends entirely on your profit level, sector, expenditure and structure. A proper review is the only way to know your specific position.

Start Your Corporation Tax Review

If you haven’t reviewed how your company’s profit is taxed in the last year or two, there’s a good chance you’re leaving money on the table. Ready to review your corporation tax position? Get in Touch using the form below.

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