I paid over $6,000 of student loan interest in 2017, but due to my AGI I was only qualified for $2,500 federal deduction.
I lived and worked in MD for the first half of the year and moved to CA for a new job. When I allocate the student loan interest deduction, should I allocate $1,250 to each state? Or should I allocate $2,500 to each because I paid $6,000 interest? I'm reporting partial residence in both states so I assume I shouldn't allocate the full amount to each. Thanks!