Difference btwn Assistant Commissioner of PMS and CSS?
 

Salamz
AC ki seats PMS k through b ati hain aur CSS mein DMG group mein b hain.
Jo log qualify kar chuke hain, plz in dono mein farq bataen, regarding perks, benefits, authority and promotion track etc. etc.
My humble request is to plz be open while giving your opinion.
Thanks in anticipation.
Regards

The only difference is that in promotion... Everything else remains the same so far as you remain an AC... Perks, privileges and benefits are awarded to the seats that you occupy and not to the individuals.. So,irrespective of how you made it to the post of an AC, everything apart from promotion remains the same.... I hope that answers your question