Get your taxes done using TurboTax

 very informative and great learning. I've a scenario where my salary is a combination of cash component and RSU and unfortunately my company does not let my brokerage deduct my RSU portion of the tax correctly. As a result I owe IRS till 07/31 70K as part of total compensation YTD.

I also recently traded some 2020/2021 RSU and lost 68K in total trade.

I'm trying to pay IRS this quarter, so should I pay 70k -68k =2K or entire 70K?