Post Office schemes: Double your money through this scheme in a few years - Check details This is a one-time investment scheme offered by India Post. Investments in the scheme are doubled in a fixed period Share Updated: Jul 24, 2021, 08:46 AM IST People are looking for a good place to invest their hard-earned money with a high return value. Until some months ago, for most of us, the go-to investment instrument was a fixed deposit but now the banks have also reduced the rate of interest so much so that it's a waste putting your money there. Instead, one can invest in several schemes of India Post which offers both high returns and security.