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AARP's Social Security Q&A Tool

If Social Security miscalculated your benefits and paid you a lesser amount for several years, do you receive a back payment for the money lost?

En español | Social Security will compensate you for the time you were underpaid. This compensation may be included in a number of monthly benefits until it is paid in full, or you may receive a one-time lump sum payment. Each situation is unique. Therefore you will need to contact the Social Security Administration directly.

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