The phrase "money trail" refers to a record or evidence of the flow of money from one person or entity to another. It is a way to track and understand how money is being used or transferred in various transactions or activities. Full definition
But in politics, perception becomes reality, and the electorate sides with sunshine in understanding money trails. (californiapolicycenter.org)
This list serves as a paper money trail that you can use, not only to better project expenses for the coming year, but to make smarter budgeting choices. (protective.com)