1 Function point analysis can be used to determine which environment/language/tool is more productive. 2  Function point analysis can provide a mechanism to track and monitor scope creep. 3  Function point counts at the end of each phase/stage of a project can be compared to the function points actually delivered.
You should keep most tax-related documents for a minimum of three years, but it's recommended that you keep them for seven years. If you've gone paperless, then your bank will generally store your statements for seven years, but check to see what your bank's policy is on maintaining its customers' records.
Tax returns and supporting documents. Anything to do with taxes should be kept for at least seven years. The IRS has three years from your filing date to audit your return if it suspects good faith errors and you have the same amount of time to file an amended return if you find a mistake.