Self Assessment tax returns

3. Sending a return

Once you’ve registered, you can send your tax return using HM Revenue and Customs’ (HMRC) free Self Assessment online service.

There are different ways to register if you’re:

You can get help filling in your return.

You then have to pay your bill by the deadline.

Using software or paper forms

You can choose to send any Self Assessment return using software or paper forms.

You must use one of these options to send returns:

  • for a partnership
  • for a trust and estate
  • if you get income from a trust
  • if you lived abroad as a non-resident
  • if you’re a Lloyd’s underwriter

You must use a paper form if you need to send a tax return for trustees of registered pension schemes (SA970).

The deadline for paper forms is 31 October (or 31 January if you’re a trustee of a registered pension scheme or a non-resident company).