Ct600 2025

See details

4.8 out of 5

120 votes

The document is the Company Tax Return CT600 (2021) Version 3, which outlines the requirements for companies to file their tax returns for accounting periods starting on or after April 1, 2015. It details the necessary information and forms needed for submission, including company details, income calculations, deductions, and tax liabilities. The document emphasizes compliance with filing deadlines to avoid penalties and provides guidance on various supplementary pages related to specific tax situations.

Here's how it works

01. Edit your editable ct600 form online

Type text, add images, blackout confidential details, add comments, highlights and more.

02. Sign it in a few clicks

Draw your signature, type it, upload its image, or use your mobile device as a signature pad.

03. Share your form with others

Send ct600 guide via email, link, or fax. You can also download it, export it or print it out.

How to use or fill out ct600 with our platform

Ease of Setup

DocHub User Ratings on G2

Ease of Use

DocHub User Ratings on G2

Click ‘Get Form’ to open the CT600 in the editor.
Begin by entering your company information, including the company name, registration number, and tax reference. Ensure accuracy as this data is crucial for identification.
In the 'About this return' section, specify the accounting period dates and indicate if a repayment is due or if this return contains estimated figures by marking the appropriate boxes.
Proceed to fill out the 'Accounts and computations' section. Attach any necessary documents as indicated, ensuring you provide all relevant supplementary pages.
Complete the tax calculation fields by entering your total turnover, trading profits, and any deductions or reliefs applicable. This will help determine your Corporation Tax liability.
Finally, review all entries for accuracy before signing and submitting your form electronically through our platform for a seamless experience.

Start using our platform today to simplify your CT600 completion process!

See more ct600 versions

We've got more versions of the ct600 form. Select the right ct600 version from the list and start editing it straight away!

Versions	Form popularity	Fillable & printable
2023	4.3 Satisfied (56 Votes)
2021	4.8 Satisfied (120 Votes)
2020	4.4 Satisfied (211 Votes)
2018	4.3 Satisfied (284 Votes)
2015	4.4 Satisfied (279 Votes)
2008	4.3 Satisfied (172 Votes)

be ready to get more

Complete this form in 5 minutes or less

Get form

Got questions?

We have answers to the most popular questions from our customers. If you can't find an answer to your question, please contact us.

Is there CT600 filing software?

The CT600 Corporation Tax software includes CT600 and relevant supplementary forms as listed on the Features page. Data entry forms within the software are similar to HMRC forms, with some small variations, thus simplifying the form filling exercise.

What are CT600 filing deadlines?

So, if your accounting year ends on 31 October 2025, your Corporation Tax bill must be paid by 1 August 2025 and the return completed by 31 October 2026. Missing this payment deadline can result in interest charges from HMRC, separate from any filing penalties for a late CT600.

What is the CT600?

Use this service to file your company or associations: Company Tax Return (CT600) for Corporation Tax with HM Revenue and Customs ( HMRC ) accounts with Companies House. Company Tax Return and accounts at the same time if theyre for the same accounting period.

What is a CT600?

A CT600 form is part of a Company Tax Return. The form and other supporting documents constitute the Company Tax Return, which must be submitted to HMRC if a company receives a Notice to Deliver a Company Tax Return. Limited companies use the information in a CT600 form to calculate the Corporation Tax that they owe.

When to file CT600?

HMRC require a Corporation Tax return (CT600) after the end of the accounting period. But as a CT600 can only report up to a maximum of 12 months, so you will need to file online two CT600s.

ct600

CT600 deadline CT600 Guide CT600 UK CT600 software CT600 form PDF CT600 download CT600 Guide Version 3 How to file CT600 without software

Related forms

be ready to get more

Complete this form in 5 minutes or less

Get form

Who needs to file CT600?

Every business thats registered in the UK with Companies House must submit a CT600 form every year as part of a Company Tax Return. Organisations that must complete the return include: Limited companies registered in the UK. Foreign companies with a UK branch or office.

Who needs to complete a CT600?

All companies registered in the UK with Companies House need to file a CT600 annually. Why? So that HMRC knows how much corporation tax youll need to pay on your profits. This includes limited companies, public limited companies (PLCs), and certain clubs, societies and associations that are liable for corporation tax.

Ct600 2025

Here's how it works

How to use or fill out ct600 with our platform

See more ct600 versions

Complete this form in 5 minutes or less

Got questions?

Is there CT600 filing software?

What are CT600 filing deadlines?

What is the CT600?

What is a CT600?

When to file CT600?

Complete this form in 5 minutes or less

People also ask

Who needs to file CT600?

Who needs to complete a CT600?

ct 600

Try more PDF tools