My client voluntarily surrendered the US green card in Jan 2021. She has around $5million in bank deposit and another 2 million in bonds, partnership interest. So she will be considered  a covered expat but on what amount and at what rate she will have to pay the exit tax?

Does cash balance in bank attracts any tax?

The FMV of partnership interest may be less than the original investment. 

The bond may have a small premium. 

So what's her liability and what option she has to avoid any taxes.

Thanks