Declare profit below CGT threshold on tax return? (UK)

If realised profit from non-ISA investments are below CGT threshold in a given year, do I still need to declare them on a tax return even if no tax is due? I’ve read conflicting suggestions online.


To the best of my knowledge, you need only declare anything above the current £12,300 allowance. Keep in mind that this allowance doesn’t only cover shares and that you can subtract any loses. This is not tax advice and if you’re truly concerned, I suggest that you seek out the services of a professional tax advisor.

For more details, check the official HMRC webpage. It says in part:

You do not have to pay tax if your total taxable gains are under your Capital Gains Tax allowance. You still need to report your gains in your tax return if both of the following apply:

  • the total amount you sold the assets for was more than 4 times your allowance
  • you’re registered for Self Assessment

It would be worthwhile looking through that entire guide, it’s written in quite a clear way so it is pretty easy to follow.


That’s my understanding also. Not tax advice not taken :slight_smile: