Well, inheritance tax only applies for amounts over £250,000 - any amounts released under that are tax-free. The reason its staggered over every other year, is so that the individual payments arent counted as the same amount of inheritance. As the money is substantially more than 500,000, breaking up into small, bite size pieces ensures that:
1) I cant blow the lot on hookers and cocaine
2) The taxman can't get his grubby hands on it
3) Ensure that any investment made won't be terminal - ie, if i lose all 96k, then i'll still have 5x96 left over, and i'd learn from any mistake (which i WONT be making!)
What sucks, is that the inheritance tax laws were changed this year to raise the threshold (not sure as to what amount), but because of when all this arrangement took place - it's still under the OLD laws....stupid, eh?