text: avoid capital gains taxes? how do i reduce my capital gains tax bill. i have started buying and selling shares with beals of up to £10000 a time . will i get hit with a big tax bill at the end of the year when you say 10000 a time, do you mean actual gains?  what i mean is to calculate your gain, you subtract your basis(what you purchased it for) from your sales price (what you sold it for).  if that is amounting to 10000 a time, then yes - you have to pay capital gains on that.    how do you reduce?  well, if you have other investments that are not doing so well, and you think they wont ever do well, sell them at a loss.  this will reduce your capital gains.  this includes any capital assets you have - real estate, investments, etc, etc.  other than that, there really is no way you can avoid taxes because you already sold them for a gain.  in the future, what i would recommend is at least holding the investments for over a year to ensure long term capital gains rates.