I currently use 15 different spreadsheets for my bank reconciliations. In each book are 12 tabs, one for each month: JAN 18 FEB 18 etc. At the beginning of a new year, I copy and paste the file and rename it for the new year. In each book, I replace the old year with the new and delete the old's data. However, when I get to the Tab name, I manually change the year for each month. There has to be a faster and more efficient way.