Would you please clarify what "assignment for no consideration" means - is it that I have no interest in the proceeds of the bond and they are for the benefit of my children only? If so, that's fine
It means that the transfer (ie assignment) of the bond is made for no money; thus, if the trustees appointed the bond out to the children for no monies no chargeable event for income tax purposes arises.
Therefore,to clarify,if I put the offshore bond into the discretionary trust purely for the benfit of my children and leave it there for 18 years before the trustees assign it to my children, at which point it is encashed (so a chargeable event arises) there would be NO income tax payable?
No, incorrect. If the trustees assign the bond to the children who subsequently surrender it then at the date of surrender an income tax charge arises at both their basic rate and higher rates (albeit top sliced if appropriate).
If this is the case, is there any tax benefit to drawing the accumulated 5% allowance in year 18, either before or after it is assigned to the children? Thanks again for you help, it is much appreciated.
No. The 5% withdrawals represent partial surrenders which are taken into account as and when a chargeable event occurs (eg encashment).