Documents to Keep Indefinitely in Your Estate and Financial Planning Process
Although in the previous three blogs, we’ve discussed getting rid of unnecessary paperwork and clutter after three months, one year and seven years, some documents should be kept on hand forever. 
This is because they are so important that you may need to reference them at any point in time and it may be a good idea to keep copies and backups. These should always be stored in a safe location, such as a box that is safe from a fire. These documents should be maintained forever: