Social Security Tax Wage Base

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Social Security Tax Wage Base

Social Security Administration

Social Security's Old-Age, Survivors, and Disability Insurance (OASDI) program limits the amount of earnings subject to taxation for a given year. The same annual limit also applies when those earnings are used in a benefit computation. This limit changes each year with changes in the national average wage index. Social Security calls this annual limit the contribution and benefit base. For earnings in 2018, this base is $128,400.

The OASDI tax rate for wages paid in 2018 is set by statute at 6.2 percent for employees and employers, each. Thus, an individual with wages equal to or larger than $128,400 would contribute $7,960.80 to the OASDI program in 2018, and his or her employer would contribute the same amount. The OASDI tax rate for self-employment income in 2018 is 12.4 percent.

For Medicare's Hospital Insurance (HI) program, the taxable maximum was the same as that for the OASDI program for 1966-1990. Separate HI taxable maximums of $125,000, $130,200, and $135,000 were applicable in 1991-93, respectively. After 1993, there has been no limitation on HI-taxable earnings. Tax rates under the HI program are 1.45 percent for employees and employers, each, and 2.90 percent for self-employed persons.

For an extensive history of prior years Social Security Tax Wage Base growth, click here.

Calendar Year Annual Wage
Base Amount
2018 $128,400
2017 $127,200
2016 $118,500
2015 $118,500
2014 $117,000
2013 $113,700
2012 $110,100
2011 $106,800
2010 $106,800
2009 $106,800
2008 $102,000
2007 $97,500
2006 $94,200
2005 $90,000
2004 $87,900
2003 $87,000
2002 $84,900
2001 $80,400
2000 $76,200
1999 $72,600
1998 $68,400