Once work on a project has been completed, it can sometimes take multiple years to receive a final bill for the work (or notification that there will be no additional bills). By prohibiting billing of federal agencies from occuring after a set period of a reasonable length (such as one year) after the completion of work, agencies will not have to keep as much money obligated in previous years. This could both free up significant amounts of money across the government and assist in cleaning up the books.
Idea No. 116