All payments are federally administered payments.
All years are calendar years unless otherwise specified.
In July 2001, the Social Security Administration made retroactive lump-sum payments to correct an error in the cost-of-living adjustment for 2000 and 2001. The data in this report reflect the federal benefit rate actually used for Supplemental Security Income payments ($512 for 2000; $530 for January through June 2001).
Numbers in the text and tables may not add to totals because of rounding.
Monthly data shown in tables are for the end of the given month.
With the 2005 report, we changed the calculation of the average monthly payment for Table 23 and Table 27 to agree with calculation of the average monthly payment for Table 4. The calculation excludes payments made in the current month for prior months of eligibility so that large retroactive payments do not distort the averages.
The tables on Noninstitutionalized Recipients based on the Survey of Income and Program Participation (SIPP) have been removed from the SSI Annual Statistical Report, 2005. Because of increased attrition over time and increasingly low match rates to administrative data, we could no longer make reliable estimates based on the SIPP. The Office of Research, Evaluation, and Statistics (ORES) contracted with the Census Bureau to conduct a special SIPP-based interview of SSI recipients and SSI beneficiaries. Estimates based on the additional data were not available at the time of this publication. However, ORES anticipates publishing these estimates in an alternate publication as well as highlighting the changes in the data and the reliability of the estimates. This decision reinforces the inherent differences between the survey data used to produce the Noninstitutionalized Recipient estimates and the administrative data used in this publication.
Because of variations across states in reported numbers of recipients and payment amounts of SSI state-administered state supplements, information on state-administered state supplements has been dropped from this publication.