I lived in NY (Manhattan) as a resident for 2months, then moved to NJ for 6 (same job) before leaving for another job in VA for the rest of the year. I understand I need to file taxes for both states (I'm a consultant, so I also got W2s for work done in VA while living in NJ and PA while living in NY). However, I'm a bit confused as to how to proceed when doing my wage allocation. My W2 for NY has state wages in Box 16 = Fed wages (as I've read it should), and my NJ W2 has state wages equivalent to the 6 months I spent in NY.

BOX 1: 45525.46
BOX 15-17 (NY): 45525.46, 2103.51 WITHHOLDING, 9730.53 LOCAL, 294.14 LOCAL WITHHOLDING
BOX 15-17 (NJ): 35776.94, 312.98 WITHHOLDING (also got a form attached marked "TOTAL STATE", unsure what to do with this one)
BOX 15-17 (VA): 2555.70, WITHHOLDING NOT MARKED
BOX 15-17 (PA) 517.21, 15.88 WITHHOLDING, 517.21 LOCAL, 5.17 LOCAL WITHHOLDING

All of my online tax programs are double counting the wages -- I understand I'm supposed to write on my NJ tax return the amount I paid to NY, but being a part-resident for 2 months, non resident for 6 (all NY-sourced income) is really confusing me. Any guidance would be much appreciated! Thank you!

If you are present in a state, then any income earned during this period, must be reported to the state.

To your resident state, you must report your worldwide income for the year.
Read: Your U.S. Tax Return: Working or Living in Two or More states

Thank you for the quick reply -- I'm now a resident of VA. I'm curious as to whether I should be subtracting when filling out my part-resident form for NY (45525.46-35776.94) so I don't get double-taxed? Or do I write it off on my NJ form?