The amount of a RIB payment is based upon several factors, including: social security payroll taxes paid into the
Social Security Trust Fund, the age at which benefits are claimed, the current earned income of an individual, and military service.
Primary insurance amount (PIA) The primary factor in deciding the amount of a RIB payment is the PIA which may be computed in different ways; the highest PIA is used on a person's record. Where a new start method and an old start method come up with the same PIA, it is considered that the new start method is used.
Benefits reduced for age RIB benefits can be claimed in any month after the age of 62, subject to certain restrictions.
For the formulae, RF means Reduction Factor, the number of months RIB is claimed early Formula for First 36 Months: Benefit = PIA × (180 – RF) /180
Formula for Additional Months: Benefit = PIA × (228 – RF) /240 For example, for an individual whose Full Retirement Age is 66 and 10 months and who has a PIA of $1,000, the benefit, if claimed at 62, would be $708.
Delayed retirement credits (DRCs) DRCs are accrued in any month between the month in which a person attains Full Retirement Age and the month they attain the age of 70 and they postpone claiming RIB. A person who is already claiming RIB may also voluntarily decide to stop receiving their payments temporarily to accrue DRCs beginning at their Full Retirement Age. The value of DRCs is 2/3% a month or 8 percent per year for postponement of claiming RIB. For example, if the person's full retirement age is 66 and 10 months and the PIA is $1,000, the benefit if claimed at 66 and 10 months would be $1,000 but would be $1,253 (plus any cost of living adjustment) if claimed at age 70. There are two earnings tests applied to beneficiaries who are under Full Retirement Age, the Annual Earnings Test (AET) and Monthly Earnings Test (MET). The
Senior Citizen's Freedom to Work Act of 2000, signed into law April 7, 2000, eliminated the use of these tests for beneficiaries who have attained their Full Retirement Age.
Annual earnings test The AET is used as the primary earnings test for RIB. The test applies only to earned income and has a two tier system in calculating deductions. The first tier, for those who are not reaching Full Retirement Age in the current year, reduces the benefits for the year by $1 for every full $2 the beneficiary earns over the annual exempt amount. The second tier, for those who are reaching their full retirement age, reduces the benefits for the year by $1 for every full $3 the beneficiary earns over the second tier annual exempt amount. The first tier annual exempt amount is $18,960 and the second tier annual exempt amount is $50,520 for the year 2021. When possible, all benefits deducted are deducted at the beginning of the year before any benefits are paid. The earnings test does not reduce lifetime Social Security benefits, on average. Services are considered substantial in self-employment if they consist of over 45 hours in a single month or 15 hours if it is a "highly skilled occupation." The monthly exempt amount is 1/12 of the yearly exempt amount for that year. For first tier beneficiaries, the monthly exempt amount is $1,130 and $3,010 for second tier beneficiaries for 2008. The MET is helpful for beneficiaries who retire in the middle of the year and who would be penalized for earlier earnings under the AET.
Windfall elimination provision (WEP) The Social Security Amendments of 1983 (Public Law 98-21) created the
Windfall Elimination Provision (abbreviated WEP) which was a statutory provision in United States law which affected benefits paid by the Social Security Administration under Title II of the Social Security Act. It reduced the
Primary Insurance Amount (PIA) of a person's Retirement Insurance Benefits (RIB) or Disability Insurance Benefits (DIB) when that person was eligible or entitled to a pension based on a job which did not contribute to the Social Security Trust Fund. When it was in effect, it also affected the benefits of others claiming on the same social security record. It was repealed by the
Social Security Fairness Act (H.R. 82) in 2025. Beneficiaries who had been employed in work that did not pay into the Social Security Trust Fund and who received a pension from that employment based upon earnings which were not covered by Social Security may have seen their benefits partially offset by the WEP. The WEP applied once the beneficiary was both entitled to RIB and was entitled to the pension or met all the requirements except for stopping work or filing an application. There was a possibility that with enough
years of coverage (YOC) that the WEP may have been either reduced or waived. Anyone with 30 or more YOCs was exempt from the WEP. Beneficiaries with between 21 and 29 YOCs had the effect of the WEP reduced. The WEP may have reduced the benefit in various ways, taking various rules and computation methods into account (see main article). The WEP was developed as the result of the progressive method in which the PIA is computed. Because those with less earnings on the record receive a comparatively larger percentage of their average income, under normal computations a beneficiary who paid in little to the Social Security system and who was drawing a separate pension may have had what was perceived as an unfair advantage in their benefits. ==Full retirement age==