Primary Insurance Amount

Updated: 14 May 2026

What Does Primary Insurance Amount Mean?

The primary insurance amount (PIA) is a component of Social Security, representing the amount a person would receive in retirement benefits if they retire at their normal retirement age.

In general, the more a person contributes to Social Security throughout their lifetime, the higher their PIA will be. Because the PIA alone is rarely enough to cover a comfortable retirement, many people supplement it with other sources of monthly income, such as annuities.

Insuranceopedia Explains Primary Insurance Amount

An individual’s primary insurance amount (PIA) is calculated based on their average indexed monthly earnings (AIME). Instead of considering the worker’s average earnings over their entire lifetime, only the 35 highest-earning years are taken into account.

The PIA is calculated by summing three percentages:

  • 90% of the AIME up to $885
  • 32% of the AIME from $885 to $5,336
  • 15% of the AIME exceeding $5,336

Knowing your PIA is useful when planning the rest of your retirement finances, including whether to buy life insurance for seniors to leave money for a spouse or cover final expenses.