There are two versions of the interactive calculator: one works on IBM PC's
and compatibles running recent versions of the Microsoft Windows operating system,
either Windows 2000, Windows XP, Windows Server 2003, Windows Vista, or Windows 7, and the
other runs under the Mac OS. The benefit can be computed for either a new entitlement
or a recomputation after initial entitlement. Summary results are presented on the
screen; there is an option to print out details of the computations.
The calculator can produce a benefit for any historical case from the first
Social Security benefit paid (1940). It can also produce a projected benefit,
based on standard or user-specified assumptions, through 2090.
Although we have tried to be as accurate as possible, this is not the same
calculator as is used for official Social Security calculations and it may
produce results that differ from an official calculation. In particular, for primary
benefits, we have made approximations for pre-1965 benefits and for the frozen minimum PIA,
and we only partially take account of disability non-exclusion computations and the
disability guarantee computation. In addition, the calculator is not set up to estimate
dependent or survivor benefits where the dependent or survivor also receives benefits
based on their own record, or survivor benefits where the benefit is affected by
the worker's retired worker benefit prior to death. Based on experience to date,
this calculator matches the official calculations very well, with most differences
due to late posting of earnings to the earnings record, or different assumptions
for projected benefits.
The 2014.1 version, which takes all amendments to the law, and
automatic adjustments, through 2013 into account, is now
available at this web site. It updates the 2013.2 version by updating the economic
data with the new
automatic adjustments announced on October 30, 2013.