There are a number of good reasons to consider a deferred annuity as part of your financial retirement plan:
You postpone paying income taxes on any earnings until you withdraw money, typically during retirement, when you may be in a lower tax bracket. All earnings grow tax-deferred.
You can put in as much money as you want. Unlike Individual Retirement Accounts (IRAs), there is no IRS restriction on the amount that can be contributed annually to deferred annuities with your after-tax money. You can, however, use a deferred annuity to fund your traditional or Roth IRA, in which case you would operate within IRA limitations.
You can provide death benefits to your heirs. If you die prematurely, your annuity can offer a death benefit to your beneficiaries without the costs and delays of probate. Your beneficiaries will never receive less than what you have contributed (less any withdrawals). In addition, a spouse who inherits an annuity before distribution has begun can step in as the new owner of the annuity and the tax deferral continues until amounts are withdrawn. If distribution payments had begun, the benefits would generally have to be distributed to the beneficiary at least as rapidly as through the method in effect at the time of the annuitant's death. Taxation will continue to apply to those proceeds. Generally, a beneficiary who inherits an annuity before distribution begins can request a lump sum distribution without penalty but will be subject to full taxation on the accrued interest or gain on the contract.