International tax law distinguishes between an estate tax and an inheritance tax. An inheritance tax is a tax paid by a person who inherits money or property of a person who has died, whereas an estate tax is a levy on the estate of a person who has died. However, this distinction is not always observed; for example, the UK's "inheritance tax" is a tax on the assets of the deceased, and strictly speaking is therefore an estate tax. Inheritance taxes vary widely between countries.