Corporation Tax: Upcoming filing deadlines and reminder about recent amendments

6 June 2023

Corporation Tax: Upcoming filing deadlines and reminder about recent amendments

Recent changes HM Revenue & Customs (HMRC) made to the rate of Corporation Tax mainly affected larger businesses in the UK. 

As of April 2023, companies that generate a profit of more than £250,000 during their accounting period will pay a rate of 25 per cent in Corporation Tax, an increase from the 19 per cent that it was previously. 

Smaller businesses that made a profit of £50,000 or less still pay the previous rate of 19 per cent so the recent updates have no impact on them.  

Businesses hovering between £50,000 and £250,000 profits for their accounting periods should be entitled to marginal relief.  

Marginal relief gradually increases the Corporation Tax rate between the 19 per cent smaller profits rate and the 25 per cent main rate.  

Marginal relief means many businesses in this profit bracket will be able to avoid having to pay the full 25 per cent main rate.  

Dividend payments 

The increase in Corporation Tax has added further complexity for large business owners who normally pay themselves and other shareholders in dividends to reduce the tax they pay.  

This complexity has been compounded by HMRC’s recent amendments to the dividend allowance, which has fallen from £2,000 to £1,000 as of 6 April 2023. 

It is now advised that larger business owners assess the number of dividends that they pay to avoid paying more tax than they need to.  

Upcoming Corporation Tax filing deadlines 

Please read below for the upcoming Corporation Tax filing deadlines.  

  • 14 June 2023 – Corporation Tax instalment payments for large and very large companies 
  • 30 June 2023 – Corporation Tax return due for accounting periods ended 30 June 2022
  • 1 July 2023 – Corporation Tax for accounting periods ended 30 September 2022 where not payable by instalments 

For more information about Corporation Tax and advice on how to submit your returns, please contact us. 

Latest News

When is a gift exempt from Inheritance Tax? The seven-year rule explained

According to recent research, the amount of Inheritance Tax (IHT)... Read more

Do the Autumn Budget and the Real Living Wage leave businesses stuck between a rock and a hard place?

The highlight of the financial calendar, the 2026 Autumn Budget,... Read more

Six months until MTD pulls in one million more taxpayers: What you need to do now

There are now six months until the scope for MTD... Read more

Can your children work in your family business?

For many SME owners, the day-to-day running of a business... Read more

Pensions are washed – How Gen Z’s abandonment of pensions impacts employer obligations

A common topic of debate among those financially savvy is... Read more

Diesel and oil crisis: Is your business preparing for the unexpected?

A recent meeting with G7 leaders resulted in 100 million... Read more

Get in touch

This field is for validation purposes and should be left unchanged.
If you would like to see full details of our data practices please visit our Privacy Policy.

843 Finchley Road,
London, NW11 8NA

This field is for validation purposes and should be left unchanged.

If you would like to see full details of our
data practices please visit our Privacy Policy.

Glazers Chartered Accountants is a partnership. This information has been produced for general interest. It is therefore essential to take advice on specific issues. We are unableto take responsibility for any outcome resulting from acting upon, or refraining to act upon, this information. In accordance with the disclosure requirements of the Provision ofServices Regulations 2009, our professional indemnity insurers are Prosure Solutions Limited, 150 Minories, London, EC3N 1LS. The territorial coverage is worldwide excludingany action for a claim bought in any court in the United States of America or Canada.

© Glazers 2026. Company No. 05962817

Website designed by Imagine That