Contributions by Program & Source

Contributions to the Social Security and Medicare Trust Funds,
by program and source, 2001-2010 (in millions of dollars)
Program and source		2001	2002	2003	2004	2005	2006	2007	2008	2009	2010

Social Security Trust Funds

Old-Age and Survivors Insurance ^a		$453,354	$468,107	$468,574	$486,726	$520,706	$550,414	$578,069	$590,121	$590,321	$569,006
	Employer	210,659	215,897	217,675	223,311	241,018	253,705	265,753	272,060	269,586	259,387
	Employee	207,999	215,039	216,222	222,118	239,163	251,813	263,856	269,956	267,440	257,893
	Self-employed	22,793	24,262	22,179	26,703	26,682	29,269	31,269	32,540	33,366	29,635
	Taxation of benefits	11,903	12,909	12,497	14,593	13,843	15,628	17,192	15,566	19,930	22,090

Disability Insurance ^a		75,743	78,202	78,386	81,287	87,150	92,038	96,636	98,879	98,820	94,726
	Employer	35,759	36,655	36,962	37,922	40,929	43,081	45,127	46,199	45,783	44,047
	Employee	35,312	36,503	36,716	37,720	40,614	42,760	44,804	45,841	45,418	43,794
	Self-employed	3,861	4,114	3,764	4,534	4,534	4,967	5,312	5,526	5,664	5,034
	Taxation of benefits	811	930	944	1,111	1,073	1,230	1,393	1,313	1,955	1,852

Medicare Trust Funds

Hospital Insurance ^a		160,896	162,650	159,164	166,977	182,565	194,238	205,289	213,364	206,173	199,102
	Employer	71,181	71,334	69,885	72,760	80,159	84,417	89,093	91,981	88,242	84,397
	Employee	71,181	71,334	69,885	72,760	80,159	84,417	89,093	91,981	88,242	84,397
	Self-employed	9,631	10,040	9,472	10,964	11,065	12,439	13,669	14,732	14,405	13,238
	Voluntarily enrolled^b	1,370	1,626	1,604	1,915	2,416	2,645	2,841	2,938	2,908	3,310
	Taxation of benefits	7,533	8,316	8,318	8,577	8,765	10,319	10,593	11,733	12,376	13,760

Supplementary Medical Insurance^{a, c}		22,764	25,066	27,402	31,435	37,535	42,853	46,773	50,232	56,040	47,282
	Aged	19,905	21,610	23,546	26,737	31,722	36,346	39,676	42,335	47,433	39,273
	Disabled	2,859	3,456	3,856	4,699	5,813	6,507	7,096	7,897	8,606	8,009

^a Totals do not necessarily equal the sum of rounded components. Employment taxes depend on tax rates, and, for the Old-Age and Survivors Insurance and Disability Insurance Trust Funds, wage bases (taxable maximums). (Beginning in 1994, no wage base applies to Medicare's Hospital Insurance program.) Employer and employee contributions differ by estimated amounts of employee tax overpayments and by employee tax on tips.
^b Beginning in July 1973, aged ineligibles may voluntarily enroll for Hospital Insurance.
^c Includes premiums paid on behalf of eligibles by State governments under "buy-in" arrangements.


	Privacy Policy \| Website Policies & Other Important Information \| Site Map Last reviewed or modified Feb 8, 2011	Need Larger Text?