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Benefit Calculation Examples for Workers Retiring in 2012

We illustrate the calculation of retirement benefits using two examples, labeled case A and case B. In each case, the worker retires in 2012. Case A, born in 1950, retires at age 62. Case B, born in 1946, retires at his normal (or full) retirement age. In each case, we assume the worker has covered earnings from 1972 through 2011, as shown at right in columns labeled "nominal earnings."

Indexing brings nominal earnings up to near-current wage levels. For each case, the table shows columns of earnings before and after indexing. Between these columns is a column showing the indexing factors. A factor will always equal one for the year in which the person attains age 60 and all later years. The indexing factor for a prior year Y is the result of dividing the average wage index for the year in which the person attains age 60 by the average wage index for year Y. For example, the case-A indexing factor for 1972 is the average wage for 2010 ($41,673.83) divided by the average wage for 1972 ($7,133.80).

We use the highest 35 years of indexed earnings in a benefit computation. The dropped indexed amounts are shown in red. Below the indexed earnings are the sums for the highest 35 years of indexed earnings and the corresponding average monthly amounts of such earnings. (The average is the result of dividing the sum of the 35 highest amounts by the number of months in 35 years.) Such an average is called an "average indexed monthly earnings" (AIME). The next step is to calculate benefits based on AIME amounts.


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Earnings before and after indexing
Year Case A, born in 1950 Case B, born in 1946
Nominal
earnings
Indexing
factor
Indexed
earnings
Nominal
earnings
Indexing
factor
Indexed
earnings
1972 $6,6705.8417$38,964 $9,0005.4181$48,763
1973 7,1105.497839,089 10,8005.099055,069
1974 7,5565.189339,210 13,2004.812963,531
1975 8,1464.828439,332 14,1004.478263,143
1976 8,7364.516839,458 15,3004.189264,094
1977 9,2884.261439,580 16,5003.952365,213
1978 10,0573.947939,704 17,7003.661564,809
1979 10,9703.630339,824 22,9003.367077,104
1980 11,9953.330339,947 25,9003.088880,000
1981 13,2433.025740,070 29,7002.806383,347
1982 14,0152.867940,193 32,4002.659986,180
1983 14,7432.734640,317 35,7002.536390,546
1984 15,6572.582840,439 37,8002.395590,550
1985 16,3742.477340,563 39,6002.297690,985
1986 16,9112.405940,685 42,0002.231493,718
1987 18,0442.261640,809 43,8002.097691,875
1988 18,9892.155540,930 45,0001.999189,961
1989 19,8012.073441,055 48,0001.923092,304
1990 20,7771.981841,176 51,3001.838194,294
1991 21,6161.910641,300 53,4001.772194,628
1992 22,7971.817041,422 55,5001.685293,530
1993 23,0611.801541,545 57,6001.670996,241
1994 23,7501.754441,668 60,6001.627298,607
1995 24,7751.686841,791 61,2001.564595,746
1996 26,0631.608241,914 62,7001.491593,519
1997 27,6651.519542,037 65,4001.409392,168
1998 29,1981.443942,160 68,4001.339291,602
1999 30,9151.367742,283 72,6001.268592,094
2000 32,7201.296042,406 76,2001.202091,596
2001 33,5971.265842,528 80,4001.174094,392
2002 34,0321.253342,651 84,9001.162498,686
2003 34,9651.223442,775 87,0001.134698,714
2004 36,6951.169042,897 87,9001.084295,304
2005 38,1471.127843,020 90,0001.046094,137
2006 40,0141.078243,143 94,2001.000094,200
2007 41,9491.031443,266 97,5001.000097,500
2008 43,0361.008243,389 102,0001.0000102,000
2009 42,5071.023643,512 106,8001.0000106,800
2010 43,6351.000043,635 106,8001.0000106,800
2011 45,6941.000045,694 106,8001.0000106,800
Highest-35 total  1,460,327Highest-35 total  3,225,949
AIME 3,476 AIME 7,680
Note: Nominal earnings for case B are limited by the contribution and benefit base for all years. Case B is an example of a person who has earned at or above the maximum taxable amount in each year.
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Last reviewed or updated October 19, 2011