TheShabz's reply is a SQL statement to fill in the field for any records already in your table. To implement his suggestion just make a Query, switch to SQL View, and paste his SQL statement into it.
As for changing your Form to automatically fill this in for new records, place the following code in the Control Source field of your Renewal Date's textbox:
Code:
=DateAdd("yyyy",1,[mytable].[requested])
Of course, you'll need to change [mytable].[requested] to the actual table and field names you're using.
P.S.
Credit goes to TheShabz whose SQL statement I shamelessly stole and modified.