Tuhin:
You can use the federal per diem rates that are available on the IRS website (
www.irs.gov). As long as you can reasonably prove that you were traveling, you need no receipts if you claim the daily per diem rate as quoted by the IRS.
However, if you were traveling as an employee (pay documented with a W-2), you have two requirements. The first one you seem to know about
: the fact that you have to itemize.
However, you also have the 2% floor to meet. This means that based on 2% of your Adjusted Gross Income, you can deduct the travel expenses that exceed 2% of your AGI.
Since you did not provide what you got paid for the year of 2005, I cannot advise you as to whether you qualify to itemize or not.
Also, to check out the per diem rates, you need to say to where you traveled.