Federal State Employment Tax (FSET) information for software developers

New York State participates in the Federal State Employment Taxes (FSET) program for quarterly withholding tax and unemployment insurance filings and payments.

FSET handbook

Publication 120 helps software developers implement the FSET program with New York State. (Updated February 15, 2019)

FSET error codes

See the reject codes that can cause New York State to reject FSET filings. (Updated January 18, 2019)

NYS FSET field definitions and rules

NYS FSET spreadsheet (Updated January 18, 2019)

E-file signature document

The ERO will complete document TR-579-WT and tax preparation software must provide this document as well.

FSET schema

Use the FSET schema to develop your tax preparation software. (Updated October 25, 2013)

FSET approved vendors

For a current list of vendors approved by New York State, please see Approved Vendors for Federal State Employment Taxes (FSET).

Send all questions to NYSTAXFSET@tax.ny.gov