Filing 1099 and W2
I am currently working a full time job (W2) and work on the side as a independent contractor (1099). This the first time I'm doing both. Is it okay to file both at the same time (planning to file my 2021 taxes sometime in Feb 2022 or Mar 2022) using the Turbo Tax Premier product? I heard that as a 1099 contractor, you might have to pay quarterly tax payments?
Also, I was also just recommended to update my W4 (from my full time job) to withhold a certain additional amount so that when it comes to tax filing next year, I may not have to pay self-employment tax? Also, on the W4, should I update it to say I have two jobs or just update it to withhold a certain additional amount?
Thank you in advance!