June 3, 2019 5:07 PM
Being retired has nothing to do with quarterly payments. What income do you have that is being taxed by PA? If you owe over $246, you should have been making estimated payments unless you met one of the "safe harbor" exemptions. See https://www.revenue.pa.gov/FormsandPublications/FormsforIndividuals/PIT/Documents/rev-577.pdf for further information.