@Anonymous_ I do actually have a single-member LLC. I am filing form MD 510.
I did make the election on Federal Form 2553 to elect as an S-Corporation when registering the business originally in 2020, and received reciept from IRS, and had no issues with this using Turbo Tax Business last year.
So, yes I did properly elect to be treated as an S-Corporation and the business is a single-member LLC registered in the state of Maryland.
