As executor, how do I sign my deceased grandmother’s return in Louisiana?

[macuser_22]

You would probably sign the state return  the same as the Federal return.

Suggest that you read IRS Pub 559 (Survivors, Executors, and Administrators) for a lot of good information about filing the final return and estate return and other requirements and how to sign.

https://www.irs.gov/pub/irs-pdf/p559.pdf

[Anonymous_]

I agree with @macuser_22; just sign it as personal representative. Follow the instructions at the link below.

http://revenue.louisiana.gov/TaxForms/IT540i(2019).pdf

Surviving Spouses, Executors, Administrators, or Legal Representatives – A final return for a decedent must be filed if you are the surviving spouse, executor, administrator, or legal representative, and the decedent met the filing requirements at the date of death. If both conditions apply, mark the decedent box on the face of the return for the appropriate taxpayerand attach a copy of the death certificate. If a refund is due to the decedent’s estate, survivor, etc., you must also complete and attach Form R-6642, Statement of Claimant to Refund Due on Behalf of Deceased Taxpayer.