Unexpectedly Intriguing!
30 January 2007

Warren Meyer over at The Coyote Blog has been playing with the numbers from his annual Social Security report, and he isn't pleased with what he's estimated to be the effective rate of return on his "investment" in Social Security.

We thought that kind of math might make for a neat project, so we've gone to Social Security's actuarial notes and mined the data to create our tool below, which will approximate what Social Security estimates will be your rate of return on the amount of money you will pay into Social Security over your lifetime. That is, assuming they don't hike your taxes or slash your benefits!

Update 25 August 2011: Before you go any farther, we've made an updated version of this tool available, which incorporates Social Security's actuarial projections as of July 2010! If you're game, we suggest comparing your results here with those from the updated version!

Birth Year and Household Income Data
Input Data Values
Your Birth Year
Your Average Lifetime Annual Income
Household Type

Your Estimated Rates of Return from Your Social Security "Investment"
Calculated Results Values
Low Rate of Return Approximation (%)
Average Rate of Return Approximation (%)
High Rate of Return Approximation (%)

High, Low and Average

If your birth year is before 1930, you can expect that your effective rate of return on your "investment" in Social Security is at the high end of the range presented above.

On the other hand, if your average lifetime annual income is high (more than $60,000), you can expect that the approximation is overstating your rate of return and that your effective rate of return is closer to the low end of the approximated range.

Otherwise, you should be pretty comfortably somewhere near the average approximate value!

Winners and Losers, Generally Speaking

In using the tool, you'll find that Single Males fare the worse, followed by Single Females and Two-Earner Couples, while One-Earner Couples come out with the best rate of return from their "investment" in Social Security.

These outcomes are largely driven by the difference in typical lifespans between men and women. For the typical One-Earner Couple, the household's income earner, usually male, dies much earlier than their spouse, who keeps receiving Social Security retirement benefits until they die. This advantage largely disappears if both members of the household work, which increases the amount of Social Security taxes paid without increasing the benefit received.

The Older The Better

Going by birth year, you'll find that those born in recent decades don't come out anywhere near as well as those born back when the program was first launched in the 1930s. This is primarily a result of tax increases over the years, which have significantly reduced the effective rate of return of Social Security as an investment.

For example, when Social Security was first launched, the tax supporting it ran just 1% of a person's paycheck, with their employer required to match the contribution. Today, 6.4% of a person's paycheck goes to Social Security, again with their employer paying an additional 6.4% into the fund as well. Since benefits are more-or-less calculated using the same formula regardless of when an individual retires, the older worker, who has paid proportionally less into Social Security, comes out ahead of younger workers!

The Poorer the Better

If you play with the income numbers (which realistically fall between $0 and $97,000), you'll see that the lower income earners come out way ahead of high income earners. Social Security's benefits are designed to redistribute income in favor of those with low incomes.

Living and Dying

There's another factor to consider as well. This analysis assumes that you will live to receive Social Security benefits (which you only get if you live!) If you assume the same mortality rates reported by the CDC for 2003, the average American has more than a 1 in 6 chance of dying after they start working at age 19-20 before they retire at age 66-67. Men have a greater than a 1-in-5 chance of dying before they reach retirement age, while women are slightly have slightly over a 1-in-7.5 chance of dying pre-retirement age.

Morbid? Maybe. But your Social Security "investment" isn't as without risk as many politicians would have you believe!

Labels: , ,

About Political Calculations

Welcome to the blogosphere's toolchest! Here, unlike other blogs dedicated to analyzing current events, we create easy-to-use, simple tools to do the math related to them so you can get in on the action too! If you would like to learn more about these tools, or if you would like to contribute ideas to develop for this blog, please e-mail us at:

ironman at politicalcalculations

Thanks in advance!

Recent Posts

Indices, Futures, and Bonds

Closing values for previous trading day.

Most Popular Posts
Quick Index

Site Data

This site is primarily powered by:

This page is powered by Blogger. Isn't yours?

CSS Validation

Valid CSS!

RSS Site Feed

AddThis Feed Button


The tools on this site are built using JavaScript. If you would like to learn more, one of the best free resources on the web is available at W3Schools.com.

Other Cool Resources

Blog Roll

Market Links

Useful Election Data
Charities We Support
Shopping Guides
Recommended Reading
Recently Shopped

Seeking Alpha Certified