EdithM
Level 3

Get your taxes done using TurboTax

New York initially computes the tax due based on total, federal income.  Then calculates the percentage of this attributable to New York, income either earned while a resident of New York or sourced to New York while a nonresident.  This may cause the tax to go up even if income belonging to another state is entered, a higher tax bracket may be reached in the initial computation of tax.