Hi,

I worked in the US for 2 years under H1B for company 1 then 2 other years for company 2 and then joined a Masters program in New York last year in Sep09.
I am graduating this month May10, and found a job with a 3rd company and will be working under my Masters OPT starting 1 June.
At the same time I launched 3 years ago my green card with company 1, and since I'm in the last phase, the Green Card process is independant of the company that used to sponsor it.
question:
since I will be under OPT for about a year starting 1st June, but in 2 to 3 months I will get the working permit from the green card (which will overlap with my OPT), can I still use the OPT for the full 12 month in order to get taxed lower (at 17% total tax) instead of being taxed 35% under the working permit?