As WoWo says, the estate from which you receive the money will pay any Inheritance Tax which is due and the money you receive will then be free of tax. If you invest it and it earns income, then that income will be taxable in the normal way. One final thing, if the estate takes a while to wind up, you may receive some income from your share of the estate before you receive the lump sum - the executors will pay tax on this before you get it, but if you are a higher rate tax payer, you will be liable to pay the difference.