- Guidance: Tell HMRC about an underpayment of import charges on an import declaration made in CHIEF
- National Insurance Manual
- Trusts, Settlements and Estates Manual
- Accredited official statistics: HMRC tax receipts and National Insurance contributions for the UK
- Guidance: Report Climate Change Levy subsidies to HMRC
- Self Assessment Manual
- Accounting periods for Corporation Tax
- Your limited company's first accounts and Company Tax Return
- HMRC online services: sign in or set up an account
- Official Statistics: HMRC statistics: pre-release access list
- Guidance: Corporation Tax: how to make a claim or election
- Guidance: HMRC email updates, videos and webinars for tax agents and advisers
- Guidance: HMRC email updates, videos and webinars for VAT
- Compliance Handbook
- Enquiry Manual