Newbie - sole exectutor of parent's complex(ish) estate

poseidon1

In your position as the sole residuary beneficiary of the estate and a £700k S &S ISA in point, I absolutely would drag out the estate administration for the 3 year period allowed to benefit from tax free gains and the income tax shelter the rules afford you.

Of course this is subject to satisfying the fixed sum legatees in a timely fashion, but if you can do so by only partially encashing the ISA that would be my approach.

Given you only have a personal £20k annual isa allowance ( doubling to £40k if married), it would be a shame to squander this generous tax free ongoing estate ISA provision by winding up the estate prematurely.