Form IT-203-X (2023): Nonresident and Part- Year Resident Amended Income Tax Return

Form IT-203-X is the official document used to amend a previously filed New York (NY) State Income Tax Return for nonresidents and part-year residents for tax year 2023. This form allows you to correct any errors or omissions made on your original return, such as:

  • Incorrect income reporting
  • Miscalculated deductions
  • Missed credits
  • Changes in filing status

Who should use it?

  • Individuals who filed Form IT-203 (IT 203 or 203) for tax year 2023 and need to make changes to their income, deductions, or credits.
  • Individuals who mistakenly filed Form IT-201 (meant for full-year residents) when they should have filed Form IT-203.

What information do you need?

  • A copy of your original Form IT-203 along with any supporting schedules or documentation.
  • Details of the specific changes you are making to your return.
  • Any additional income, deductions, or credits you are claiming.
  • Updated filing status, if applicable.

Important points to remember:

A. Filing deadline: Generally, you have three years from the original due date of your return (without extensions) to file Form IT-203-X.

B. Filing method: While you can't electronically file Form IT-203-X, you can mail it to the New York State Tax Department.

C. Penalties and interest: You may be subject to penalties and interest if you significantly underpaid your taxes due to the errors you are correcting.

To access the current year's Form IT-203-X, click here.