June 1, 2019 9:58 AM
Really depends on how much the side business makes as a profit.
If you can just increase the withholding from W-2 job to take care of the income tax and self-employment tax you can do it that way, or make the estimated tax payments.
Right now, I'm making about $500-$600/month. I'm trying to figure out how to estimate AGI so I can go ahead and pay quarterly taxes. Would my AGI be my employed + side business income? Or only side business income since I'm filing through an EIN?