We have pulled together a list including links of forms available for various HMRC related matters.
Dealing With HMRC:
Report your self assessment income and claim tax reliefs and any repayment due to you using the SA100 tax return.
Register for and file your Self Assessment tax return
Self Assessment payment slip
Use the Gift Aid declaration form to make a one-off Gift Aid donation to a charity or Community Amateur Sports Club (CASC), or use the form if you're a charity or CASC to give to your supporters.
Application to pay self-employed National Insurance contributions by Direct Debit
Use the online forms service or postal forms to register a new partnership for Self Assessment.
Use the online forms service or the postal form to register for Self Assessment if you've joined a partnership.
Gather the right information about your new employee if they do not have a recent P45.
Employers must fill in the SSP1 form when an employee is not entitled to Statutory Sick Pay (SSP) or when their SSP is ending.
Use form SSP2 if you're an employer and need to record details of an employee's sickness absences for Statutory Sick Pay (SSP).
If you are an employee and need to claim Statutory Sick Pay (SSP) from your employer use form SC2.
Register for VAT if you're starting a new business, registering your existing business or taking over an existing business. Use the online service or VAT1 form.
Use form VAT484 to tell HMRC if any of the business details on your VAT registration application have changed.
Apply to join the Flat Rate Scheme using form VAT600FRS.
Ask HM Revenue and Customs to transfer the VAT registration of a company that's changing ownership using form VAT68.
Use form VAT652 to tell HM Revenue and Customs about errors on your VAT returns that are over the current threshold.