02.14.23

Fixed and variable longevity annuities in defined contribution plans: Optimal retirement portfolios taking Social Security into account

Insights Report
Research Dialogue

What percentage of a retiree's deferred contribution plan assets should be allocated to longevity annuities, bonds, and stocks—and how do Social Security benefits affect this decision?

Summary

Social Security pays retirees a lifetime annuity with fixed benefits that vary based on earning history and claiming age. Privately purchased annuities can supplement Social Security and provide a predictable income stream sufficient to cover necessities. This paper examines how best to allocate a retiree's DC portfolio in retirement across longevity annuities, bonds, and stocks when considering Social Security benefits in retirement. Understanding optimal portfolios in retirement when considering Social Security is imperative to improve Americans' retirement security.

Key Insights

  • Including deferred income annuities in DC plan accounts is welfare-enhancing for all.
  • Providing access to variable deferred annuities with some equity exposure further enhances retiree wellbeing, compared to having access only to fixed annuities.
  • For the least educated, delaying claiming social security benefits is preferred, whereas the most educated benefit more from using accumulated DC plan assets to purchase deferred annuities.

Even a 20% equity exposure in a deferred income annuity generates a roughly 12% welfare gain for the most educated, which is over 20% for high school graduates.

Methodology

The researchers use a life cycle model to explore the welfare impact of providing retirees with access to longevity income annuities inside tax-qualified retirement accounts. The model incorporates details of the U.S. Social Security system, income taxes, and other relevant considerations, including required minimum distributions.

Estimated average income profiles for females and males by educational level

Authors

Vanya Horneff

Goethe University

Raimond Maurer

Goethe University

Olivia S. Mitchell

University of Pennsylvania

Sign up for the TIAA Institute newsletter

Get the latest research and insights straight in your inbox

We are sorry.

The service that receives your request is unavailable at the moment. Please try again.

Related Publications