Fast Formula for Accruals Plan

Content

Hi 

I have limited FF experience and was hoping this might be a simple question for someone who has more experience. We have a FF which includes calculating the number of days between the employee hire date and the end of the current year. It uses the below line to establish 'the end of the current year':

Effective_end_date = to_date('3112'||to_char(GET_CONTEXT(EFFECTIVE_DATE,'4712/12/31 00:00:00' (date)), 'YYYY'),'DDMMYYYY')

I actually need to establish the end of the next year, not the current. Can I add a +1 somewhere in this line to achieve this? I'm just not sure how to do this.