36 Million Americans May Owe State Tax on Their Social Security Benefits

Each and every month, more than 61 million people receives a payout from the Social Security Administration, and more than two out of three recipients are retired workers. A majority of these elderly retirees leans quite heavily on Social Security to make ends meet, with 62% counting on the program for at least half of their monthly income and 34% relying on it for 90% or more of their income. Without this guaranteed monthly payout, it's fair to say we'd probably have an elderly poverty problem on our hands.

Yet, in spite of the critical role that Social Security currently plays for retirees, and is expected to play for baby boomers in the future, there's quite a bit the average American doesn't understand about it. A 2015 10-question, true-false survey conducted by MassMutual Financial Group on basic Social Security knowledge found that just 28% of the more than 1,500 people who took the quiz got a passing grade of seven correct answers or higher. Only one person aced the quiz.

Though it may sound a bit cliche, the reality is that what you don't know about Social Security can come back to bite you in the wallet during your golden years.

Two Social Security cards partially covering a hundred dollar bill.
Two Social Security cards partially covering a hundred dollar bill.

Image source: Getty Images.

Seriously, you can be taxed on your Social Security benefits

Arguably one of the biggest surprises seniors receive when they retire is discovering that their Social Security benefits may be taxable. The taxation of Social Security benefits generated $32.8 billion for the program in 2016, or a bit more than 3% of total revenue.

Back in 1983, as part of the Social Security Amendments passed by the Reagan administration to close an actuarial deficit in the program, the taxation of benefits was introduced. Single taxpayers earning more than $25,000 annually, and couples filing jointly with more than $32,000 in earned income, could have 50% of their Social Security benefits taxed at ordinary federal income-tax rates. A separate tier was added in 1993 under the Clinton administration for single filers earning above $34,000 and joint filers above $44,000. These folks can have 85% of their Social Security benefits exposed to federal income-tax rates.

When introduced, this tax impacted about one in 10 households with a Social Security recipient. As of 2015, it impacted 56% of households, according to The Senior Citizens League. Despite this amendment being passed 34 years ago, the income thresholds have never been adjusted upward to account for inflation, meaning you have a better chance than not of owing at least some federal tax on your benefits.