Corporation Tax

Get the advice and support you need

Regardless of whether you have a complex corporation tax computation that requires attention or a comparatively straight forward company tax question, our team can help.

Every company in the UK must file an annual tax return (a CT600). Typically, this is due 12 months after the end of the period for which Statutory Accounts are prepared. However, the tax itself must be paid well head of this, typically just over 9 months after the period end. In addition, companies can face a significant number of issues during the year, ranging from EIS relief and R&D tax credits to navigating the intangible fixed assets regime. Care is required here and not all companies will be affected. Some smaller companies may have quite straight-forward tax calculations.

Things to consider

Where a company comes within the charge to corporation tax then under Finance Act 2004, s55, they have a duty to notify HMRC within 3 months. Thereafter, a company must file a return for each accounting period and formal Statutory Accounts must accompany the return. Complications can arise here as there is a technical difference between an accounting period and a period of account and claims for reductions can easily be missed and care is required. Some of the things to be considered are:

  • A company's tax return must be filed within 12 months after year-end,

  • Tax should be paid within 9 months after the year-end,

  • An iXBRL tagged set of Statutory Accounts must accompany the tax return,

  • Generally, HMRC have 12 months in which they can open an equiry into the return,

  • Companies pay tax at 19% however this is set to rise over the coming year.


Personal Tax
Management Accounts
Partnership / LLP Tax

Boxwood have been our accountants for a number of years and provide us with advice and support for our year-end Statutory Accounts and Corporation Tax Return. We have always found the team helpful and professional. They are always available to chat through any questions we may have and we no longer worry about getting our tax filed on time.

John at Bentley Consultancy Services Ltd

How We Can Help

At Boxwood, our team can prepare your corporation tax return, the associated calculations and the accompanying Statutory Accounts. The tax rules in this area can be very tricky and we will be happy to guide you on tax saving opportunities. We will be able to answer any questions you may have and we can help ensure deadlines are met. We make sure that all work is carried out efficiently and on time, which helps avoids penalties and interest charges. The Boxwood team will always be available if you have any questions and we will always agree a fixed fee with our clients prior to any work being carried out.

Fixed Fee Approach

Our fees are very competitive & are always agreed with our clients prior to starting any task

Accessable & Available

We are here to help our clients. If you have any questions, just give us a call any time. We will be happy to help

Client Satisfaction is Everything

Clients' satisfaction is very important to us and we work hard to ensure that our service is always "top drawer"

Small & Medium Business Focus

We work closely with small & medium sized clients, helping improve financial process and business decision making

Experienced &


As Chartered Certified Accountants, we offer up-to-date advice and guidance

Prompt & Proactive

All client work carried out promptly and, wherever possible, we offer proactive advice on tax & cost savings.

Call us anytime for a free and informal chat 

​Call us anytime if you have any questions at all. We will be more than happy to chat through your queries. You’ll be surprised at how easy and inexpensive it is to get the help you need with your accounting and tax obligations.