You can use the worksheet in the link below. Note: You will only be making 1 estimated tax payment (for federal and state each) for the 1st quarter 2018 self-employed earnings.
<a rel="nofollow" target="_blank" href="
http://www.revenue.pa.gov/FormsandPublications/FormsforIndividuals/PIT/Documents/2018/2018_rev-414i....>
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