Post Office Scheme: Invest Rs 25000 and get this HUGE amount in return after 5 years At present, the scheme is getting 5.9% interest annually. Under this scheme, you can get tax exemption of Rs 1.5 lakh annually under Section 80C. File photo Updated: May 11, 2021, 09:54 AM IST Post Office's National Saving Certificate Scheme (NSC) is time-tested and an extremely safe investment option. If you invest as little as Rs 100 a month in the NSC scheme, you can become a millionaire in a few years. The National Saving Certificate Scheme (NSC) lets you make money by keeping your investment safe without any risk and make your and your family’s future secure.