Help with Sales Tax

Hello,

 

I'm operating as a Sole Proprietor and use my SSN when filing taxes.

I'm trying to apply for a Sales Tax Permit in Michigan and it says I need a Federal Employer Identification Number (FEIN). If I get a FEIN number and apply under this, can I still use my SNN number to sell on platforms like Amazon and file my income taxes under my SNN?

 

Thank you in advance for the help. I'm overwhelmedScreenshot 2019-10-31 14.57.36.png.

 

Michael