Part NY and Part NJ taxes with same NY Employer

[saloni311]

Hello,

I lived in NY for 10 months during the tax year and then moved to NJ for the remainder of the 2 months while working for the same employer in NYC. I am filing information first for part-year resident NY and then part-year resident NJ taxes. I have a few questions regarding my state filing:

1. While entering my NY resident income do I use the amount in Box 18 of my W2 or manually calculate it based on the # of days/months I lived in NYS? (The difference is about $500, not sure which amount to input there)

2. Do I need to claim credit for taxes paid to another state, in this case claim a credit on my NJ return for tax paid in NYS?

3. While entering income earned while 'living or working' in NJ, am I inputting the same amount I put in my NYS return under the 'non-resident' section?

4. Where do I get the Dividend Income information from? Does that come from my 1099-DIVs? How does that get divided per state?

5. In the section for Double Taxed Income while resident of NJ - which amount am I entering? For 'Tax paid to New York City' I believe I would enter the amount from 'Box 19 - Local Income Tax'?

Tax season is stressful and any help would be much appreciated.

Thank you.

[TomD8]

I think @DanielV01 's answer to this previous Q&A should help you (ignore the paragraph on NYC.):

I work in NYC, and moved from NYC to NJ during the year. At some point during each state form, it as...

[saloni311]

Thank you. I think it helped me divide the salaried income based on how long i lived in NYS and NJ, for Part Resident NY tax.

I did come across this for my dividend income - is this also split the same way I split my salaried income? 

What does 'NY Source Portion' mean?

[AbrahamT]

As to your first question, you can take your "Total Unearned Dividend Income", divide by 12 and multiply by the months lived as a NY resident income. 

As to your second question, the definition of "NY Source Portion" would include all of the following, see HERE  under Subcaption

"Nonresident individuals, estates, and trusts."