How do I determine my primary insurance amount?


Editorial team Published on

You can determine your Primary Insurance Amount (PIA) by using the official Social Security Administration PIA Formula Calculator to apply a three-tier percentage formula to your average lifetime earnings.

Your PIA is the exact monthly benefit you receive at your full retirement age—neither reduced for early filing nor increased for delayed retirement.

📊 Step 1: Calculate Your AIME

  • Find your highest 35 years of earnings.
  • Adjust past earnings for national wage inflation.
  • Divide the total by 420 months (35 years) to find your Average Indexed Monthly Earnings (AIME).
  • Treat missing work years as zero-earning years in the average.

📉 Step 2: Apply the Three-Tier Formula

The Social Security Administration applies three percentages to your AIME using annual "bend points" (set at $1,286 and $7,749 for 2026 eligibility):

  • 90% bracket:
    • Applies to AIME up to $1,286.
  • 32% bracket:
    • Applies to AIME between $1,286 and $7,749.
  • 15% bracket:
    • Applies to AIME exceeding $7,749.

💡 Step 3: Sum and Round

  • Add the three bracket results together.
  • Round down the final unadjusted sum to the next lower multiple of ten cents.