The minimum average balance (MAB) needed to be maintained in an India Post savings account is Rs 50, which is meagre in comparison to other banks. You can also receive a cheque book by depositing Rs 500 in your account. For a cheque book account, Rs 500 is MAB required. It offers 4% interest rate, while country’s largest PSU bank State Bank of India offers 3.5% interest for savings bank account. SBI also requires customers to maintain Rs 3,000 MAB in metro cities and Rs 2,000 and Rs 1,000 in semi-urban and non-urban branches respectively. The return on post office savings is determined based on return on government’s small savings schemes. The good part is that through India Post savings account, you can avail all the benefits of many central savings schemes. Interest earned is tax free up to Rs 10,000.