Useful HMRC Forms 1. Agent Authorisation form 2. Becoming self employed and registering for Self Assessment and NIC 3. Registering for Self Assessment and getting a tax return 4. Self Assessment Tax return form 5. Authorising your Agent to use PAYE/CIS online services 6. Company Tax Return Form 7. VAT Registration Form 8. Application to Cancel your VAT registration 9. Child Benefit Claim Form 10. Tax repayment Claim form