Interesting. I get pay statement adjustments (they show up alongside my paychecks when I view them) to take out the taxes, so it seems like my employer is doing it, not the brokerage. I’m not sure if they do this when the RSU’s are first given, or when they vest; I’ll have to pay more attention this year.

I do need to do something weird with my taxes every year to enter that the taxes were already paid, as by default when I import, it shows that I need to pay taxes on the whole thing. Every year it feels like doing it for the first time; it’s always confusing to find the right spot in TurboTax and which numbers to enter for the taxes I already paid.

If the brokerage is doing the deduction based on a checkbox the user selects, I can see how a discrepancy could arise.