filing quarterly taxes on 5k of self-employment income

Hello 🙂

 

If I understand correctly, the IRS expects you to file quarterly taxes if you will owe 1k or more in federal taxes.

1. Is that if you owe 1k or more in self-employment taxes only, or total taxes (only 5k of my income will be self-employment, but I expect to earn another 5k from an employer).

2. If paying quarterly taxes only concerns self-employment income, than am I thinking correctly that 15.3% of 5k is $765, therefore I would not need to pay quarterly taxes?

 

Thank you!