Help to file your Company Tax Return

There are many different types of help available to support you when using the HM Revenue & Customs (HMRC) Corporation Tax Online Service.

If you choose to use HMRC's Corporation Tax Online filing software, you'll find on-screen help as you work through the return, a beginner's guide to filing your return online, an online demonstrator and tax guidance on what you need to include in your return. There is also a dedicated Online Services Helpdesk to help you handle technical problems.

This guide explains where to find the help you need to successfully file your Company Tax Return online and what else you can do online for Corporation Tax.

On this page:

A beginner's guide to filing your return online
Corporation Tax Online demonstrator
Online Services Helpdesk
Tax help to complete your Company Tax Return
Using commercial software
More useful links

A beginner's guide to filing your return online

HMRC has produced two beginner's guides to help you use their free software to file your Company Tax Return.

The guides are aimed at customers who are filing online for the first time or who are unsure about how the Corporation Tax online service works.

The first guide - Enrolling for Corporation Tax Online - a beginner's guide - is to help you get started using the Corporation Tax online service. This guidance applies, if you didn't use HMRC's online registration service to set up your company for Corporation Tax. If you did, then your company should already be able to use Corporation Tax Online.
The second guide - Filing your Company Tax Return online - a beginner's guide - explains how to file your Company Tax Return online using HMRC's free software, including some pictures of the screens you'll see to help you familiarise yourself with the way the software looks and works. The guide also includes an example of the HMRC and Companies House joint filing service that allows some companies to submit their statutory accounts (as part of their Company Tax Return to HMRC) and send them (or an abbreviated version) to Companies House using a 'one stop' online facility.

The guides are available in PDF format so you can download them and refer to them as you work through the screens.

You can download the guides by following the links below.

Enrolling for Corporation Tax Online - a beginner's guide (PDF 1.1MB)

Filing your Company Tax Return online - a beginner's guide (PDF 2.1MB)

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Corporation Tax Online demonstrator

The HMRC Online Service demonstrator shows you how to register for Corporation Tax Online and helps you understand some of the features of the online service.

Go to the HMRC Corporation Tax Online demonstrator

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Online Services Helpdesk

HMRC has an Online Services Helpdesk to help you with any queries about the HMRC Corporation Tax online service.

Contact the Online Services Helpdesk

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Tax help to complete your Company Tax Return

You can find tax help to complete your return along with guidance on filing deadlines by following the link below.

Completing and filing your Company Tax Return

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Using commercial software

You can also use commercial software to file your return. Commercial software may be better suited to your company or organisation's circumstances if, for example, you need greater flexibility and choice of supplementary pages.

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