Hi ,
I' an italian H1B holder
I entered in USA inSeptember 2007 and for the last year and this year I could use the exemption benefit
My contract and then my visa has been extended for another year an they told me that, due o this fact , I have to pay the taxes I've been exempted till now.
To be more precise inApril 2010 I have to pay the taxes for year 2008 and 2009
Is it true?
Thanks
Andrea

There is no exemption benefit on H1B visa. You must file your 2007 and 2008 tax returns.

If employer is not deducting SS tax, Medicare tax and income taxes, then tell them that they MUST withhold these taxes.

Your income is also subject to SS tax and Medicare tax from day one. Read about H1-B tax filing: Your U.S. Tax Return: The U.S. Visas (http://taxipay.blogspot.com/2008/08/us-visas.html)

Agreed; your income is exempt from income taxes ONLY IF you are under a J-1 visa.

Under your current H-1B visa, your income is fully taxable.