When couples have young children ie teenagers and pre-teens it is always better to be safe rather than sorry when it comes to their Wills. This is because it is simply impossible to know at that age whether children are likely to be sensible with money when they get to 18, 21 or 25, the common trigger ages of inheritance. Certainly 25 is a much more sensible age for inheritance than 18 but it may still not be the right age, especially if either a lot of money is involved or the child is still pursuing the follies of youth.