If you are anticipating receiving an inheritance on the death of a parent or other relative your rights to receive such inheritance will depend on whether or not the deceased left a valid will.
If they did not leave a will they are said to have died intestate. In this case whether or not you would receive an inheritance will depend on what the Rules of Intestacy state. Basically you will have to have been a relative of the deceased. How much, if any, inheritance you receive will depend on how many other relatives there are living who may also inherit and what ‘status’ you may have in a ‘hierarchy’ of relatives – for example, a surviving spouse and children of the marriage will have higher status than, say, a grandchild or a niece or nephew.
If they did leave a will they are said to have died testate. In that case whether or not you receive an inheritance will depend on what is stated in the will. Basically, if you are nominated as a beneficiary in the will, you should receive the inheritance defined. If you are not named in the will, you probablywill not receive an inheritance.
Note that the words ‘should’ and ‘probably’ in the above paragraph are in italics. This is because you, if you are a relative, may be able to challenge the will – or, someone else who is a relative may also do the same.