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Corporation Tax Filing

Navigate Your CT600 Filing Options Seamlessly

Find the best way to prepare and submit your Corporation Tax return, especially after HMRC's online service changes.

Understanding CT600 Filing Post-HMRC Service Closure

Following the closure of HMRC's online service for Corporation Tax (CT600) returns, UK companies and their advisors need to adapt their filing methods. This change impacts how businesses submit their annual tax returns. It's crucial to understand the available options to ensure timely and compliant submissions, avoiding potential penalties. This guide outlines the primary ways to prepare and file your CT600, focusing on software solutions that support these workflows.

Key CT600 Filing Options

Companies now have several compliant methods for submitting their Corporation Tax returns:

Choosing the Right Corporation Tax Software

Selecting appropriate Corporation Tax software is vital for efficient and accurate filing. Key considerations include ease of use, integration with existing accounting systems, compliance with the latest HMRC requirements, and the level of support offered. Software solutions can automate calculations, validate data, and facilitate direct submission, significantly reducing the risk of errors and saving valuable time. Look for software that supports iXBRL tagging for accounts if required.

Prepare and Submit Your CT600 with Confidence

Discover Taxvie's comprehensive solution for preparing, reviewing, and managing your UK company's Corporation Tax filings. Our software supports the latest CT600 requirements, helping you navigate submissions efficiently.

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Frequently asked questions

What happened to the HMRC online service for CT600 filing?

HMRC has closed its dedicated online service for submitting Corporation Tax (CT600) returns. Businesses and agents must now use alternative compliant software solutions for filing.

Can I still file my CT600 for free?

While HMRC's direct online service is closed, some software providers may offer free or low-cost options for basic CT600 filing, particularly for simpler company tax returns. It's advisable to research current offerings.

What information is needed for a CT600 return?

A CT600 return requires details of your company's income, expenses, capital allowances, and tax calculations. It is typically accompanied by the company's statutory accounts, which may need to be in iXBRL format.

What are the deadlines for filing a CT600?

The standard deadline for filing a CT600 return and paying Corporation Tax is 12 months after the end of the accounting period. However, it's crucial to check specific deadlines and potential penalties for late filing.

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Updated 2026-05-15