Social Security 2100 Act
Amends title II (Old Age, Survivors and Disability Insurance) (OASDI) of the Social Security Act (SSAct) to:
Amends the Internal Revenue Code (IRC) to increase the gross income threshold for taxation of Social Security benefits from $25,000 to $50,000 for single taxpayers and from $32,000 to $100,000 for married taxpayers filing joint returns, beginning in 2016.
Amends the IRC and SSAct title II to impose the employment tax on all wage income above $400,000, effective in 2016. Requires incremental increases, up to 15.3% in 2084, in the employment and self-employment taxes.
Amends SSAct title II to include 2% of an individual's excess average indexed monthly earnings (over $400,000 per annum) in the formula for determining primary insurance amounts.
Amends IRC to increase the Social Security tax rate on employees and employers and with respect to self-employment income.
Requires reallocation of a portion of employment tax revenues from the OASDI Trust Fund to the Federal Disability Insurance Trust Fund for wages paid after 2014.