Their salary is roughly the same level, but last year Gurpreet Sethi paid nearly Rs.1 lakh more in tax than some of his co-workers. Shocked by the high tax outgo, the Delhi-based product manager wrote to ET Wealth, searching for ways to reduce his tax liability. Tax filing portal Taxspanner analysed his tax details and found that Sethi was not availing many of the deductions available to him, including the NPSbenefit offered by his company and investing in the scheme on his own. “The NPS alone could have reduced his tax by more than Rs.51,000,” says Sudhir Kaushik, Founder and CEO of Taxspanner.