An annuity is a contract between you and an insurance company that requires the insurer to make payments to you, either immediately or in the future. You buy an annuity by making either a single payment or a series of payments. Similarly, your payout may come either as one lump-sum payment or as a series of payments over time.
Insurance companies sell annuities, as do some banks, brokerage firms, and mutual fund companies. Make sure you read and understand your annuity contract. All fees should be clearly stated in the contract. Your most important source of information about investment options within a variable annuity is the mutual fund prospectus. Request prospectuses for all the mutual fund options you might want to select. Read the prospectuses carefully before you decide how to allocate your purchase payments among the investment options.