Dear Mr. Kamran Husain,
As you are aware, IT is based on the savings that you make on different heads, including a housing loan. Broadly, it can be stated that Conveyance is exempt up to a maximum of Rs. 800 per month. Medical reimbursements are up to a maximum of Rs. 15,000 per annum, and LTA can be claimed twice in a block of 4 calendar years. To my knowledge, there is no cap on the amount of LTA. The rest of the exemptions are available in the form of HRA or Housing loan, etc.
M.V. KANNAN