Yes, you must file both state returns as part year residents of each.
Part-year resident
If you lived inside or outside of California during the tax year, you may be a part-year resident.
As a part-year resident, you pay tax on:
- All worldwide income received while a California resident
- Income from California sources while you were a nonresident
CA PY
Part-year residents must use Form NJ-1040 and indicate the period of their New Jersey residency. The return should show only the income received during that period. Likewise, part-year nonresidents must use Form NJ1040NR and indicate the period of time they were residents.
NJ PY
