How To Calculate A Deferred Annuity? 
This ca n't be answered without much more information . If it is a variable annuity , the accumulation may vary as can the actual payout . If it is a fixed annuity , this will be explicitly outlined in your paperwork . This is assuming you are talking about payout . If you are talking about amount and duration required to pay in for a certain income , it would be best to talk with an agent in your area . The agent will be able to assist you in coming up with the desired income from the annuity and you can work backward from there . 