This reference explains NY's filing requirements for non-residents:
https://www.tax.ny.gov/pit/file/nonresidents.htm
If you do have to pay NY income tax, you would claim a credit for it on your home state PA tax return, not on your non-resident DE tax return.
Credit for income tax paid to a non-resident state is granted by the taxpayer's resident state.
Hi, I cannot see your response, could you please reply again?
This reference explains NY's filing requirements for non-residents:
https://www.tax.ny.gov/pit/file/nonresidents.htm
If you do have to pay NY income tax, you would claim a credit for it on your home state PA tax return, not on your non-resident DE tax return.
Credit for income tax paid to a non-resident state is granted by the taxpayer's resident state.
Q. Do I need to file taxes in NY?
A. Yes, but "nobody" does. See http://money.cnn.com/2013/06/28/pf/taxes/business-traveler-tax-threat/ If you live in a state without an income tax (e.g. FL or TX), it’s more likely you should file in the work states. You can't use the "it all comes out even" rationale for not filing.