You are correct you should get a credit on your NJ return for the taxes paid to NY on the NY wages received while you were a resident of NJ since those would be double taxed. It sounds like you may not be off or at least not far off with your entries. I say that as you mention you moved to NYC so there will be NYC taxes now on your NYS state return. You won't need
anything from your pay stubs.
Be sure you have indicated in the federal "My Info" section that you lived in NY on 31 Dec 2024 but lived in another state and select NJ and enter the date you moved to NY.
Hopefully when you moved to NY you had your employer stop withholding for NJ. If so, the W2 entries will help with the allocation. If not, you will need to determine the wage amount that was paid while a resident of NJ. For example if paid weekly then divide the box 1 amount by 52 and multiply by the number of weeks in NJ.
Enter your W2 exactly as received in the federal "Wages and Income" tab.
Next, work your NY state part-year return. NOTE: This time through do not indicate that you you lived in NYC as that did not happen until later. This time through you will only allocate the double taxed wages (earned while resident of NJ) do not allocate any other income to NY at this time. You will be asked about the wages received while non-resident and while resident; only enter those while non-resident. Complete the NY interview allocating zero deductions while non-resident.
Take note of the taxes paid to NY on those wages; you will use that for the credit on your NJ return.
Next work your NJ part-year return. When asked about eliminating wages check the NY wages to delete. Enter the wages received while an NJ resident when asked. If the W2 NJ state box 17 is correct, verify; if not, enter your calculated amount. Continue through the income and deductions allocating based on when you were in NJ.
Eventually you will arrive at the NJ credit for taxes paid to another state interview section. Make your entries there based on the NY state interview numbers you completed earlier. Finish the NJ interview.
Now you can go back through the NY state interview and this time add the resident period allocations and indicate the NYC residence period as well. Allocate any other income and deductions based on your residence period in NY. When done this time, your NY state return should have all the wages allocated to NY as well as any other income received while resident of NY.
@jlyssikatos
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