Barmaid if she comes along can mark the answers so far
I dont think they are very good
the source by the way DOES affect the position
first of all I am nt sure what you mean by profit
Sell housey and get £200k ( no tax due on transaction as it is your first house )
use 100k for a small house ( in er Cleethorpes or Grimsby otherwise telephone box ) still no tax specifically CGT
give the surplus left over ( I think your profit ) to the kids
NO immediate tax for you or the kids
BUT In the event of your death there could be a charge
First of all you have to have used up your IHT allowance ( nil rate band) of £325 000 - if your unreduced estate is smaller than that you can stop reading at this point
if you have used up the nil rate band then the gift of the £100k will be taxed but at a reduced rate under the seven year rule which everyone knows about. The £100k isnt reduced - the tax rate is reduced
see here
http://moneytothemasses.com/tax-advice/inheritance-tax-iht-taper-relief-on-gifts-explained
If you give another say £75k to the same kids then the clock is reset to the date of the second transfer.
http://www.telegraph.co.uk/finance/personalfinance/tax/11937233/The-14-year-inheritance-tax-rule-youve-never-heard-of.html
Everyone knows that you cant tax efficiently transfer your house to your dear kids and still live in it ( goes against the retention of benefit /interest in possession rule ) - however you also cant live in the house they buy with the 100k ( or 175k) - pre owned asset rule
and that is about it
I have given you some good advice - do you want to send me a cheque for fifty quid ?
o and best answer to 3T he deserves it.