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Where Do Social Security Taxes Go?

Social Security taxes that workers and employers pay are credited to the Social Security trust funds. The trust funds are defined by law as a way to set aside money that is earmarked for Social Security. A Board of Trustees oversees the trust funds. It is made up of the Secretary of the Treasury, who is the managing trustee, the Secretaries of Labor and of Health and Human Services, the Commissioner of Social Security, and two public trustees from different political parties who are appointed by the President and confirmed by the Senate.

In 2016, the Social Security program received $958 billion in income and spent $922 billion for benefits and administrative costs, increasing the trust fund reserved by 35.2 billion. Total administrative costs amount to less than 1 percent of the funds collected each year.

What happens to the funds that are not used immediately to pay benefits? By law, the funds are invested in special-issue Treasury securities that earn interest. In effect, the funds are loaned to the Treasury, which borrows the money just as it borrows money when it sells Treasury securities to the public. In return for the funds they loan to the government, the trust funds receive Treasury securities bearing a market rate of interest. The average interest rate on the portfolio held by the Social Security trust fund was 3.2 percent in 2016.

Because the federal government is spending the cash it borrows from Social Security, “some people see the current increase in the trust fund assets as an accumulation of securities that the government will be unable to make good on in the future,” according to the Social Security Administration website. But, the agency states on its website, “Far from being ‘worthless IOUs,' the investments held by the trust funds are backed by the full faith and credit of the U. S. Government. The government has always repaid Social Security, with interest. The special-issue securities are, therefore, just as safe as U.S. savings bonds or other financial instruments of the Federal government.”

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* The views of Academy members are their own and not an official position of the National Academy of Social Insurance or its funders.