Not totally clear, let’s do an example :
Say my income in 2020 is $100,000 and my tax on it is $30,000, paid April 15 2021.
Say my income in 2021 is $1,000,000 and my tax on it will be $300,000 due on April 15 2022.
During 2021 am I ok paying the safe harbor amount,110% of $30,000 = $33,000, in quarterly payments of $8,250?
By ok I mean that I won’t incur underpayment penalty when I pay the reminder, $300,000 - $33,000 = $267,000, on April 15 2022?
