Estimated Tax Payments - SMLLC

[JKalabokis]

Hi there - I will be incorporating as an LLC this month. When making my quarterly estimated tax payments, should I use my SSN since I wasn't incorporated January-March or my EIN? Does it matter either way? 

Just want to make sure I'm as organized as possible! 

[MinhT1]

No. The LLC is a legal entity.

You should apply for an EIN for the LLC and use it when you paid estimated taxes. The first installment for 2021 is due on April 15, 2021.

[JKalabokis]

Thanks for the reply! I understand it is a legal entity but I wasn't sure if I should use the EIN for my first quarterly payment since I invoiced my clients Jan-March before it was established. 

[CatinaT1]

I would use the EIN so it is credited properly and at the time you are submitting the payment you have the EIN.