This post office scheme can help you if you are looking for an alternative to regular monthly income or extra income. Just for this, you will have to open an account once in the post office under this scheme. Under this scheme, a single account is guaranteed an income of Rs 2737 per month. At the same time, there is a guarantee of security on every single penny you deposit in your account. The special thing is that you can open this account with a minimum of 1500 rupees.