The phrase "for future reference" is a common one, often used to indicate that information should be remembered or referred to again at a later time. However, there are several other phrases that can be used in its place, including "for future use," "as a point of reference," "for later," "for your records," or simply "remember." Each of these phrases conveys a sense of importance and significance, reminding the reader or listener that the information being shared is worth holding onto and revisiting in the future. When used appropriately, these synonyms can make communication more precise and effective.