Hi,
CTC stands for Cost to the Company on an annual basis. Gross salary includes Basic, HRA, Other Allowances, conveyance, etc., the components of which are given on a monthly basis. You multiply this by 12 to arrive at Gross Salary per annum.
CTC includes all the components of (A) Gross Salary, (B) Statutory contributions such as PF, ESIC, Bonus, (C) LTA (Once per year), and other perks such as Car, Telephone, Driver, Car Maintenance, House, Insurance, etc. In short, all the costs that the company has to incur for the particular position. The concept of CTC varies from company to company.
Trust this clarifies your query. Please feel free to ask for any clarifications.
Regards,
Seema