IsabellaG
Expert Alumni

Get your taxes done using TurboTax

The way that NY calculates your tax as a part-year resident is to compute the tax based on your entire income, then apply a percentage to the tax based on how much of your income is from New York sources, or was earned when you were a NY resident. If you look at line 45 of your Form IT-203, you will see the income percentage. Line 46 shows the allocated NY tax.

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