当然，只是针对在非盈利机构入大学等研究单位的H1，头三年是免税的,如果你不是直接以H1来美的，而是从别的签证类别转过来的，可能就不适用了，如果你是J1两年，那么H1的第一年也是免税的。
你可以填税表全额要回，根据是：U.S.Tax Treaties publication 901 P.13:
China, People's Repubic of
An individual who is a resident of the People's Republic of China and who is temporarily in the United States primarily to teach, lecture, or conduct research at a university or other accredeited educational institution or scientific research institution is exempt from U.S. income tax on income for the teaching, lecturing or research for a total of not more than 3 years.
This exemption does not apply to incoe from research carried on mainly for the privated benefit of any person rather than in the public interest.
至于州税，要不要的回来要看你所在的州承认联邦税法与否，我知道麻州是承认的，所以把这个publication附上就能要回来税，加州就不行，要交税，不过州税是小头了。Good luck!