Dear Lokesh,
As per my knowledge, Gross Salary is the amount before deductions, and it includes: Take-home salary + employee's share of PF and ESI contribution (as applicable).
CTC is the total cost which an organization spends on an employee. Therefore, in Gross salary, we have to add the organization's share of PF, ESI, bonus, and other allowances like LTA/Med, etc.
Somebody please correct me if this is not correct.
Thank you.