By law, income to the trust funds must be invested, on a daily basis, in securities guaranteed as to both principal and interest by the Federal government. All securities held by the trust funds are "special issues" of the United States Treasury. Such securities are available only to the trust funds.
In the past, the trust funds have held marketable Treasury securities, which are available to the general public. Unlike marketable securities, special issues can be redeemed at any time at face value. Marketable securities are subject to the forces of the open market and may suffer a loss, or enjoy a gain, if sold before maturity. Investment in special issues gives the trust funds the same flexibility as holding cash.
$135 billion of old bonds matured this year. This money was rolled over into new bonds with a yield of only 1.375%. The average yield on the maturing securities was 5.64%. The drop in yield on the new securities lowers SSA’s income by $5.7B annually. Over the fifteen year term of the investments, that comes to a lumpy $86 billion.
Anyone who is 55 or older should be worried about this. Based on current law, all SS benefit payments must be cut by (approximately) 25% when the TF is exhausted. This will affect 72 million people. The economic consequences will be severe.
You can understand the impact of the invisible tax on the elderly by watching the decline of interest income from $50,000 invested in a five-year Treasury obligation. As recently as 2000, this would have yielded about 6.15 percent and an interest income of $3,075 a year. Now the same obligation is yielding 0.7 percent and an interest income of $350 a year. This is the lowest yield on this maturity of Treasury debt since the Federal Reserve started keeping an index of the yields in 1953.
But it's more than a low interest rate. It's an income decline of nearly 89 percent in just 12 years.