Help with MS Access

I have an Access 2010 database that I enter purchase orders into. By default when I enter a ship date the program inputs the current year which isn't a big deal until November and December of a given year, at that time the orders I'm inputting have a mix of ship dates of the current and the coming year. How can I make the program recognize that when I enter a PO line and have the new year inputted where needed?

 

Are you able to write your own code for the entry form? A simple if statement would clear that whole problem

 

No. I was hoping that there was some preloaded option I could check to make that happen but haven't been able to find it.