I have provident fund, gratuity and superannuation components as part of my salary. I requested my company to give me the option to opt for better and tax-efficient product, such as National Pension System (NPS) in lieu of these three. My company has, however, responded that PF, gratuity and superannuation are mandatory products and no change can be done in that. There is a one-time option where Employees’ Provident Fund (EPF) balance can be transferred to NPS and the same will not be taxable. Should I go for it?