I'm informed by my Independant Financial Advisor that the individual allowance is at present, �315,000. So, If you're married and your spouse dies & leaves everything to you, you pay nothing (as spouses are exempt from Inheritance Tax anyway, but you must be legally married). Your children can then inherit both yours and your spouse's allowance. So, when you die, and assuming your total estate isn't worth more than �630,000, your offspring don't pay inheritance tax. If it's worth more than that, then the Inland Revenue take a chunk of anything above this figure, but I'm not sure what the percentage is at the moment, as things are changing all the time. Perhaps someone else has a better idea?