Everyone should make a Will, but it is even more important to do so if you have children under the age of 18.   A Will lets you provide for their care. You may need to name someone to act as their legal guardian to look after them and help manage their financial affairs after you have gone. You may want to set up a trust for their benefit to save for their education or for their use once they are older. If there are children in your family who are not biologically yours, such as step children or children who are to be borne of a surrogacy arrangement, you may have to make special provision for them If you have children from a previous marriage or relationship, even if they are adults, your Will would benefit from advice as to how their interests can be balanced with those of a new partner.