For further updates to this chart, please visit, Contribution and Benefit Base at
https://mwww.ba.ssa.gov/OACT/COLA/cbb.html
NOTE: For 1984, the employee portion of the tax contribution was added to by 0.30 percent
from general tax revenues to equal the 7.00 percent paid by employers, whose maximum
annual contribution was $2,646.00. In 2011 and 2012, the employee portion of the OASDI
tax contribution was reduced to 4.20 percent.