Regarding your last comment about avoiding the penalty if my tax return shows that I owe less than $1000, I'm having trouble squaring that statement with what I see at the top of the https://www.irs.gov/faqs/estimated-tax/individuals/individuals-2 page that you provided, where it says: " If you don't pay enough tax by the due date of each payment period, you may be charged a penalty even if you're due a refund when you file your income tax return at the end of the year." Can you resolve this seeming contradiction?
