Line 1. Filing Status
If you filed federal return:
1040 or 1040-SR , enter the code that matches the filing status from your federal return.
1040NR , enter “1” (Single), regardless of your marital status.
1040NR -AND- your filing status is qualifying surviving spouse (SS) on your federal return, enter “5” (Qualifying surviving spouse).
Filing Status Codes:
1 Single
2 Married filing jointly
3 Married filing separately
4 Head of household
5 Qualifying surviving spouse
9 Special Instructions for Couples (see Special Instructions for Married Couples )