In a drawdown strategy for an investor's retirement fund, assets from the fund are allocated between a drawdown account and an option annuity. The drawdown account contains assets that are invested in the markets, and the option annuity contains annuities that begin to pay at the end of a deferral period. In a first phase of investor's retirement, funds are drawn down from the drawdown account and paid to the investor, and the value of the option annuity grows as proceeds from the option annuity are accumulated by the option annuity. At some point the drawdown account is depleted, which corresponds to the end of the deferral period for the option annuity. At this time, a second phase of the retirement begins wherein the investor receives payments from the option annuity, and this continues for the remainder of the investor's life.