If I switched from a Sole Proprietorship to a single member llc mid year last year, is there anything I should do for my taxes this year?

[christinacheng01]

I'm in the state of Maryland. And I use the same EIN from when I was a sole proprietorship to llc.

[tagteam]

No. See https://www.irs.gov/businesses/small-businesses-self-employed/do-you-need-a-new-ein

[ColeenD3]

No. You are still filing a Schedule C as you normally did. While this doesn't apply to you, it may in the future.

MD nonresident LLC