SBI Annuity Deposit Scheme: How to get monthly income on a single deposit? In the face of rising interest rates, the country's largest lender, State Bank of India (SBI), offers a scheme called SBI Annuity Deposit Scheme, which is nothing more than an investment product in which investors are required to park a lump sum deposit and can earn monthly annuity installments that include a portion of the principal amount as well as interest.