This form is used to amend a full-year New York State resident's income tax return for the specific tax year noted on the form. It is used by filers who need to correct errors or omissions on their original returns, or when they have to report changes made by the IRS to their federal returns. To properly complete Form IT-201-X, you need its instructions (IT-201-X-I), and the instructions for Form IT-201 for that tax year (also containing instructions for Form IT-201-ATT, which may be required).

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This form is used to amend a New York State nonresident or part-year resident's income tax return for the specific tax year noted on the form. It is used by filers who need to correct errors or omissions on their original returns, or when they have to report changes made by the IRS to their federal returns. To properly complete Form IT-203-X, you need its instructions (IT-203-X-I), and the instructions for Form IT-203 for that tax year (also containing instructions for Forms IT-203-ATT and IT-203-B, which may be required).

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