"Immediate annuities are what the name says, immediate. You make a one time principal payment towards an annuity, and start receiving interest payments in the form of fixed/variable rates the following month (just like deferred annuities). " Source: http://www.moneysavingfreetips.com/deferred-annuities.html do you know how much payment one can make in an immediate annuity? like if i were to put in 150k into an immediate annuity, how much interest would i earn in a month? what about taxes?