## 703.1What are computation years?

Your computation years are those years, selected from the “base years”, that you earned the most income. Your total
earnings in the computation years are then added together and divided
by the number of months in those years to get the AME or the AIME.

## 703.2How does SSA determine the number of years, selected as the
computation years?

The *number* of years, which are selected
as the “computation years” in a particular case, is
determined in the following steps:

Determine the “elapsed years” using the
rules in §704 or §707;

Select your type of claim from those shown below and
follow the instructions shown:

*Retirement or survivors' insurance benefits:* subtract five from the result attained in (A) above. Go to step
(C).

*Disability insurance benefits where you
were first entitled after June 1980:* divide the result
attained in (A) above by five. Disregard any fraction (do not round
up or down). Subtract the result (cannot exceed five) from the number
of elapsed years. Go to step (C).

*Disability insurance benefits for months
after June 1981:* divide the result attained in (A) above
by five. Disregard any fraction (do not round up or down). Subtract
the result (cannot exceed five) from the number of elapsed years.
You may further reduce the elapsed years by the number of years that
a child, either yours or your spouse's, under age three was living
primarily with you (“childcare years”), provided that:
(1) you did not have earnings each childcare year; and (2) the combined
total number of childcare years and regular years subtracted from
the elapsed years (attained in step (A) above) does not exceed three.
Go to step (C).

The number remaining is the number of “computation
years.” This number cannot be less than two. The computation
years are selected from the base years, as defined in §705 or §709. The years selected
are those of highest earnings. For the computation indexed method
(see §700), the selection is made after the earnings are indexed.

To compute the AME or AIME, add together your total
earnings in the computation years. Divide this result by the number
of months in those years.

Last Revised: Oct. 31, 2003