Dear Sir, For foreign travel, the air travel agent would have already charged you service tax under the "Air travel agent" service. Further, the service provider is in India and hence reverse charge mechanism does not come into picture. The other expense would be accommodation abroad, which is covered under "short term accommodation" service taxable w.e.f. 1.5.2011. However since it is covered under Rule 3(i) of the Taxable services (Provided from outside India and received in India) Rules, 2006 and in which case the hotel is located aborad, there is no liability on you u/s 66A. Thus, it seems that part of the expenses have already sufferedthe tax and the other part is not taxable. There is a general misconception in the Department that every expenditure booked, particularly in FC is liable to service tax under the reverse charge mechanism. Hence you may present your case on facts on the above lines. If the facts are different, please let me know. Regards - Vijay Kumar.