What is the threshold for state tax underpayment? is it different in different states. i am asking about Pennsylvania. And where do i find that penalty if exists?

[gmott18]

Trying to better understand the penalty for underpayment of state taxes.

[ee-ea]

https://revenue-pa.custhelp.com/app/answers/detail/a_id/392/~/how-does-the-department-calculate-the-...