The Most Important Social Security Chart You'll Ever See

More than 40% of pre-retirees and 25% of millennials plan for Social Security to provide the bulk of their retirement income, according to a 2017 Gallup poll. If you're one of the millions counting on Social Security to take care of you, take a close look at the chart posted below.

Arguably the most important Social Security chart you'll ever see, it clearly illustrates exactly why you can't rely on Social Security benefits and highlights a common mistake retirees make that could cost them thousands over the course of their lives.

Social security card with statement and calculator
Social security card with statement and calculator

Image source: Getty Images.

The most important Social Security chart you'll ever see

The chart below shows the average Social Security benefits paid by age of retiree in 2015, along with the maximum initial benefit a retiree would receive if the retiree claimed Social Security at different ages after earning the maximum taxable earnings, starting at age 22..

Chart showing average and maximum benefits 2015 Social Security benefits based on age of retirement
Chart showing average and maximum benefits 2015 Social Security benefits based on age of retirement

DATA SOURCE: SOCIAL SECURITY ADMINISTRATION.

The chart also shows the monthly income necessary in a one-person household to earn enough to be at the federal poverty level in 2015.

Why is this chart so important? It reveals a number of common misconceptions about Social Security that can have a huge impact on your financial security in retirement.

Seniors relying solely on Social Security will struggle financially

The first reason this chart is important is that it shows how close to the federal poverty level you'll be if your only income comes from average Social Security benefits. Unfortunately, more than 2 in 10 married couples and 43% of single seniors rely on Social Security to provide 90% or more of their income. Because these seniors may be just above the poverty level, they may be ineligible for programs like food stamps, which could help them to survive with little monthly funds coming in.

On low fixed incomes, many will also struggle mightily to afford the costs of medical care, especially with mean healthcare expenditures totaling almost $6,000 annually for seniors 65 and over in 2016 -- around 39% to 47% of the average annual Social Security benefit for a single senior.

While those receiving the maximum benefit will fare better, this amount is available only to those who paid the maximum Social Security tax for at least 35 years. In 2017, you'd have had to earn $127,200 to pay the maximum Social Security tax. Only around 5% of all Americans earned this much. Most people, in other words, don't receive the maximum benefit.

Why does this matter? For many, Social Security is the only source of retirement income. Almost half of private-sector workers don't have a pension, and nearly 40% of them report that neither they nor their spouse have saved anything to fund retirement. For those who do have retirement savings, though, they're likely too low: The median amount saved among working families in the U.S. is just $5,000.