People earning over 20m yen a year how do you do your taxes ?

Recently got a job offer from a gaishikei with the base salary around 23.5m , as I was calculating take home from it Google Adsense started to show me ads off accountants for people earning over 20m. Then I searched a bit and looks like if you are on a salary over 20m you have to file your taxes yourself.

So people earning over 20m , do you use accountant or do you just do it yourself ? Also how do you report equity etc ?

by evilwhisper