FYI if your income varies throughout the year you can reduce the penalty (if it's worth the extra time to you). E.g. In the past I've gotten large checks in De

FYI if your income varies throughout the year you can reduce the penalty (if it's worth the extra time to you). E.g. In the past I've gotten large checks in December which would have triggered penalty but I used Form 1120 Schedule AI and owed no penalty: https://www.irs.gov/pub/irs-pdf/f2210.pdf https://www.irs.gov/pub/irs-pdf/f2210.pdf