Tax agent toolkits

Use these toolkits if you’re a tax agent or adviser, to help your clients avoid making mistakes on their returns.


HMRC toolkits are designed to help you make sure returns are completed correctly and demonstrate that you and your client have taken reasonable care.

You’ll need to download the toolkits and view them using a PDF file viewer (such as Adobe Acrobat Reader, which you can download for free from the Adobe website).

The toolkits have been created with input from agents and their representatives, including the Compliance Reform Forum. However, the content is based on HMRC’s view of how tax law should be applied.

Each toolkit focuses on errors HMRC regularly comes across. They don’t cover all types of errors that can occur in any return. Refer to the relevant HMRC guidance for areas not covered by the toolkits.

The toolkits are updated each year to reflect any changes coming in and contain:

  • a checklist to help identify the key areas errors often occur
  • explanatory notes which identify the underlying types of error, how to avoid them and a brief outline of the tax treatment
  • links to relevant online guidance

Toolkits are also updated each year for any changes coming from the relevant Finance Act.

Feedback on toolkits

You can send your feedback about toolkits to HMRC, we’d like to hear about your experience of using the toolkits to help us make future changes and improvements.

Previous versions of toolkits

You can find previous versions of the toolkits on the National Archives website.

Capital Gains Tax toolkits

Companies toolkits

  1. Small profits rate and marginal relief toolkit
  2. Chargeable gains for companies toolkit
  3. Company losses toolkit
  4. Directors' loan accounts toolkit

Employer toolkits

Toolkits for individuals

Property rental toolkit

  1. Property Rental Toolkits

VAT toolkits

  1. VAT output tax toolkit
  2. VAT input tax toolkit
  3. VAT partial exemption toolkit

Trusts and estates toolkits

  1. Inheritance Tax toolkit
  2. Trusts and estates toolkit
Published 1 January 2014