I work in the UK for a US company from which I receive a grant of shares each year. The grants are placed into a US online brokerage and vest (i.e. become sellable) over a 5 year period. When a tranche of shares vest I pay UK income tax on the value of the shares at the vest date - i.e. I only receive 60% of the shares. The shares do not qualify for any employee share scheme unfortunately.
In order to reduce my income tax liability, I'd like to move these shares into my Sipp which is managed by Hargreaves Lansdown. I'm in the process of transferring the vested shares into my Fund and Share account with HL from where I'll move some of them into my Sipp. The shares in the US brokerage were all broken down into individual tranches (or positions as I think they're called) so that the value of the shares at the time I received them is readily identifiable. However, I'm led to believe that once they get transferred into my HL account I just have a single block of shares - and that's were I get confused.
In order to move shares into a Sipp it's necessary to sell and re-buy them - a so called "bed-and-sipp" and at that point I am potentially making a capital gain - in fact quite a decent gain in the case of some of the shares. The question is, how do I determine what my gain is when I have a large amorphous block of shares from a variety of different grants and vesting schedules? Surely the shares must be kept identifiable within my HL account - have I been misinformed by the HL helpline? Btw, won't the same considerations apply with regard to an ISA?
Thanks for any help Thomas