How do I know if I owed city taxes for 2020-2021 if I paid federal and state taxes?

[2e44597dc6ea]

I filled out a 1040 and had less than $400 in taxable income made for the year of 2020-2021

[pjn]

I'm assuming that you are a resident of NYC perhaps. Not much specific details in your question, but federal and state are completely separate from city taxes.  You will need to file a city tax return if required to determine liability.