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69 Soc. Sec. Bull. 1 (2009)

handle is hein.journals/ssbul69 and id is 1 raw text is: EARNINGS SHARING IN SOCIAL SECURITY: PROJECTED
IMPACTS OF ALTERNATIVE PROPOSALS USING THE
MINT MODEL
by Howard M. Iams, Gayle L. Reznik, and Christopher R. Tamborini*
Changes in American family and work patterns over the past decades have prompted various policy proposals
for changing the structure of Social Security benefits. In this article, we use the Social Security Administra-
tion's Modeling Income in the Near Term (MINT) microsimulation model to project how Social Security benefit
amounts would change in response to incorporating earnings sharing into benefit calculations for the population
aged 62 or older in 2030 under three hypothetical policy scenarios. The earnings sharing scenarios modeled in
the article would reduce benefits for the majority of individuals, although there are important differences among
married, divorced, and widowed individuals. Some groups of men and women would experience increases in
Social Security benefits, while some would receive reduced benefits in comparison to current law, particularly
widowed individuals. Allowing widows to inherit the earnings records of their deceased husbands would improve
their outcomes.

Summary
This article provides policymakers and retirement
analysts with insights into the potential distributional
effects of incorporating earnings sharing in the calcula-
tion of Social Security benefits. Earnings sharing refers
to a system whereby the earnings records of married
individuals are combined and split equally for each
year of marriage for the purpose of calculating each
individual's Social Security benefit. Incorporating earn-
ings sharing has been proposed as one way to adapt
the Social Security program to socioeconomic and
demographic changes over the last few decades, such as
changes in women's work and marriage patterns.
Using the Social Security Administration's Model-
ing Income in the Near Term (MINT) microsimulation
model, we estimate the impact of earnings sharing
on Social Security benefits for the projected retire-
ment population aged 62 or older in 2030 under three
hypothetical policy proposals: earnings sharing with
no auxiliary survivor or spousal benefits, earnings
sharing with survivor benefits only, and earnings shar-
ing with survivor and spousal benefits. We exclude
any additional benefit enhancements from the three

proposals to focus on the fundamental effects of basic
earnings sharing on future retirees.
In evaluating the desirability of earnings shar-
ing, it is important to consider how the policy would
affect different segments of the retiree population.
Overall, the earnings sharing scenarios analyzed in
this article would lead to benefit decreases relative to
current-law Social Security benefits for the majority of
future retirees. Results differ, however, among mar-
ried, divorced, and widowed individuals. For married
individuals, over a third would receive Social Security
benefit increases, and about half would receive ben-
efit decreases under basic earnings sharing with no

* Howard M. Jams is a Senior Research Advisor to the Office of Research, Evaluation, and Statistics (ORES), Office of Retirement and
Disability Policy (ORDP), Social Security Administration (SSA). Gayle L. Reznik and Christopher R. Tamborini are with the Office of
Retirement Policy (ORP), ORDP, SSA.
Social Security Bulletin * Vol. 69 * No. 1 * 2009                              1

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