RE: Tax9 Jun 2019 01:54
Just a 1000-ft-view quick guide
1) check the double taxation avoidance agreement between AUS and UK: I assume they have one, such as you're potential capital gains are only taxed in the country you reside in for tax purposes. Generally that is defined as the country you leave in for more than 6 months a year or the country you have the strongest relationship with (say family ties) if you don't leave in any country for more than 6 months a year
2) Once you know about 1 then, if there is a double taxation avoidance agreement, doesn't really matter whether your capital is invested in USA or UK, except that residency in UK would allow you to use the ISA tax saver, which is only open to UK tax payers (i.e. residents for tax purposes - leaving more than 6 months a year /having ties in UK)
3) if you move to the UK, you can at any point in time transfer your shareholding from an account with AUS share dealing platform to an account with UK share dealing platform; most trading platforms in UK allow trading on AUX, hence you can still be invested in 88e AX though holding shares from UK account. For this you do not need to sell and re-buy. Just open account in UK and transfer your shares from the AUS institute. You avoid the risks associated to sell/buy if there's a sudden unfavorable SP movement
4) To benefit from ISA: there's a 20k£/year allowance for you and same for your partner. But, need to be UK tax payer. I would: first do 3 (transfer shares), then open trading account for partner too, then donate the equivalent of 20k£ shares to partner (donation itself is tax free, partner is potentially taxed at selling like any other individual UK tax payer); at this point open Shares ISA for you and partner (with same provider as the share dealing account, this to minimize time lapses for share dealing<>ISA operations - see later), sell 20k£ of shares in your and partner's share dealing trading account, re-buy in ISA. Consider that selling in trading account taxes approx 3 day for cash to settle, at that point you can instantaneously transfer cash from share dealing to ISA account and rebut the shares. If share dealing and ISA are not with same provider, you'll have to withdraw and then deposit, going through bank account with additional delay.
This assumes you don't have 40k£ cash to buy your 2x 20k£ shares in ISA, hence the selling and re-buying, with that cash-settling 3days lapse.
If you do, but still want to keep your level of investment in 88e say at 100k, you would have at least the possibility of timing your buy in ISA /sell in share dealing, to sell hopefully higher than buying.
Finally, the share dealing sales of 2x 20k£ would be subject to UK capital gains tax, but, you and your partner have an allowance of 12k£ gains tax free each.
HTH