In 1984, the IRS started collecting a means-test on Social Security benefits. The money is RETURNED to Social Security. Some mistakenly think it is a tax because it is collected by the IRS. But the money is returned to the system, not put into the general fund.
This money cannot be a tax subsidy to SS (a) because it does not go to the general fund (b) it would deprieve the Democrats of the ability to say that SS has not added one penny to the deficit.
This money cannot be an additional contribution because the money does not figure into future benefits - which is a core basis of the system.
It is a benefit reduction based on outside income.
Here is the link :
Social Security History
This response is from SSA :
Midway down the fourth paragraph is the following, “It is also important to note that funds raised under this provision
do not go into the General Fund of the Treasury but into the Social Security Trust Funds.” If you proceed to the eighth paragraph, you will read the section that mentions, “It was argued that this introduced General Revenue financing into the system…”