Social Security AIME Calculator

Estimate your Average Indexed Monthly Earnings (AIME), the foundational number used to calculate your Social Security retirement benefit. This calculator uses a simplified model of your earnings history to project your AIME, giving you a clear picture of how your 35 highest-earning years impact your future Social Security income.

This tool is for anyone who wants to understand the mechanics behind their Social Security statement. Whether you're planning for retirement, considering working a few more years, or simply curious about how your income history translates into benefits, this calculator provides the starting point. For a broader view, see the main Social Security Calculator or learn how much you will get from Social Security.

The calculator will provide your estimated AIME, the number of zero-earning years in your record, and an estimated Primary Insurance Amount (PIA) based on 2026 bend points. You'll also see a score reflecting the strength of your earnings history and a chart showing how working longer can replace low or zero-earning years to increase your AIME.

Begin by entering your personal information. Your Current Age and total Years of Earnings to date set the foundation for your work history. The "Years of Earnings" should be the number of years you've had income subject to Social Security taxes.

Next, provide an overview of your earnings history. This calculator uses a simplified model, so you don't need every year's exact income. Enter your Average Annual Earnings across your career, the average of your Highest Earning Years (Top 5 Avg), and the average of your Lowest Earning Years (Bottom 5 Avg). This helps the calculator build a more realistic, non-linear earnings profile.

To see how future work impacts your benefit, open the advanced settings. Enter your Expected Future Annual Earnings and the Years Until Retirement. The calculator will add these future earnings to your history, which can be crucial for replacing low-earning or zero-earning years. Once you've entered your information, click "Calculate" to see your estimated AIME and PIA.

Current Age and Years of Earnings

Your Current Age helps frame the timeline, while Years of Earnings is the total number of years you have worked and paid Social Security taxes. The Social Security Administration (SSA) uses your highest 35 years of indexed earnings to calculate your benefit. If you have worked for fewer than 35 years, the SSA will use zeros for the missing years, which will lower your AIME.

Average, Highest, and Lowest Annual Earnings

These three inputs build a simplified model of your career earnings. Instead of requiring 40+ years of data entry, this model approximates your earnings history.

• Average Annual Earnings: Your typical yearly income over your entire career.
• Highest Earning Years (Top 5 Avg): The average income during your peak earning years. This accounts for promotions or career growth.
• Lowest Earning Years (Bottom 5 Avg): The average income from your lowest-earning years, such as part-time work early in your career.

Providing these details gives a more accurate AIME estimate than using a single average.

Expected Future Annual Earnings and Years Until Retirement

These fields project the remainder of your career. Your Expected Future Annual Earnings is your best estimate of what you'll earn per year until you stop working. The Years Until Retirement tells the calculator how many of these future earning years to add to your record. These future years are often your highest-earning years and can significantly boost your AIME by replacing earlier, lower-earning years or zero-earning years. To see how this fits into a complete plan, use our main Retirement Calculator.

This calculator estimates your AIME and PIA through a simplified, multi-step process that mimics the Social Security Administration's method.

First, it constructs an approximate earnings history. It uses your inputs to create a list of annual earnings: 5 years at your "highest" average, 5 years at your "lowest" average, and the remainder of your past working years at your "average" earnings. It then adds your projected future earnings for the number of years you plan to continue working.

Second, it identifies the top 35 years. The calculator sorts all of your past and future earning years in descending order. It takes the highest 35 years from this list. If you have fewer than 35 total years of earnings, the calculator adds years with $0 earnings until it has a 35-year record. These zero-earning years can significantly reduce your AIME.

Third, it calculates your AIME. It sums the earnings from these top 35 years and divides the total by 420 (the number of months in 35 years). The result is your Average Indexed Monthly Earnings. This calculator uses your nominal earnings as a proxy for indexed earnings, providing a solid estimate, especially for those closer to retirement.

Finally, it estimates your Primary Insurance Amount (PIA). The PIA is your monthly benefit at full retirement age. The calculator applies a formula with three "bend points" to your AIME. For 2026, it applies 90% to the first portion of your AIME, 32% to the middle portion, and 15% to the portion above the final bend point. The sum of these three amounts is your estimated PIA.

The calculator follows these steps to arrive at your estimated AIME and PIA.

1. Construct Earnings History

The calculator builds a list of your annual earnings based on your inputs.

earnings_history = [
  (highest_earning_years * 5),
  (lowest_earning_years * 5),
  (average_annual_earnings * (years_of_earnings - 10)),
  (expected_future_earnings * years_until_retirement)
]

2. Select Top 35 Years

It sorts the earnings_history from highest to lowest and takes the top 35 values. If there are fewer than 35, it pads the list with zeros.

top_35_earnings = sorted(earnings_history, descending=true).slice(0, 35)
total_top_35_earnings = sum(top_35_earnings)

3. Calculate Average Indexed Monthly Earnings (AIME)

The AIME is the average of your top 35 years of earnings, expressed as a monthly amount.

estimated_AIME = total_top_35_earnings / 420

4. Calculate Primary Insurance Amount (PIA)

The PIA is calculated by applying bend points to the AIME. The bend points for 2025 are $1,174 and $7,078 (2025 values; 2026 values will be published by the SSA based on the National Average Wage Index).

if AIME <= 1174:
  PIA = AIME * 0.90
else if AIME <= 7078:
  PIA = (1174 * 0.90) + ((AIME - 1174) * 0.32)
else:
  PIA = (1174 * 0.90) + ((7078 - 1174) * 0.32) + ((AIME - 7078) * 0.15)

The final PIA is your estimated monthly Social Security benefit if you claim at your full retirement age. You can use the Social Security Break-Even Calculator to see how claiming at different ages affects your lifetime benefits.

AIME stands for Average Indexed Monthly Earnings. It is the bedrock of your Social Security retirement benefit calculation. The Social Security Administration (SSA) performs two key steps to determine your benefit: first, it calculates your AIME, and second, it uses your AIME to calculate your Primary Insurance Amount (PIA).

The "Indexed" part is crucial. To ensure fairness across generations, the SSA adjusts your historical earnings to reflect changes in the national average wage levels over your career. For example, $30,000 earned in 1995 had more purchasing power than $30,000 earned in 2020. Indexing brings that 1995 income up to a level more comparable with recent earnings. This calculator uses a simplified model without indexing, but it provides a strong estimate of the final number.

Your AIME matters because it directly determines the size of your benefit check. A higher AIME leads to a higher PIA and, therefore, a larger monthly Social Security payment. Understanding what goes into your AIME—specifically, the 35-year average—shows you exactly how working longer or increasing your income can impact your financial security in retirement.

The journey from your work history to your monthly Social Security check is a two-part formula.

Part 1: Calculating Your AIME As described above, the SSA takes your entire earnings history subject to Social Security tax. It indexes each year's earnings to account for national wage growth, selects the 35 highest-indexed years, sums them up, and divides by 420 (35 years x 12 months). This gives you your AIME.

Part 2: Converting AIME to Your Primary Insurance Amount (PIA) The PIA is your actual benefit amount at full retirement age. It's calculated by applying a progressive formula to your AIME using specific income thresholds called "bend points." The formula is designed to give lower-income earners a higher percentage of their pre-retirement income back.

The 2025 PIA formula uses these three brackets (2025 values; 2026 values will be published by the SSA based on the National Average Wage Index):

1. 90% of the first $1,174 of your AIME
2. 32% of your AIME between $1,174 and $7,078
3. 15% of your AIME over $7,078

The sum of these three calculations is your PIA. For a tool focused solely on this step, use the Social Security PIA Calculator. Your final benefit may be adjusted up or down from the PIA if you claim after or before your full retirement age.

One of the most important takeaways from any AIME calculation is the effect of zero-earning years. The Social Security formula is rigidly based on your highest 35 years of indexed earnings.

If you have worked for fewer than 35 years, the SSA will add years with $0 earnings to your record to reach the 35-year total. Each of those zero-dollar years drastically pulls down your average earnings, resulting in a lower AIME and a smaller monthly benefit.

For example, a person who worked for 30 years at a high salary will have five zero-earning years included in their calculation. This can have a more significant negative impact than five years of very low earnings. This is why working longer can be so beneficial. Each additional year you work, especially if it's a high-earning year, can replace a $0 year (or a low-earning year from early in your career), directly increasing your AIME. You can explore different retirement ages with the Retirement Age Calculator.

• Estimated AIME: This is your average monthly earnings over your highest 35 working years, based on the inputs you provided. It's the core number used to determine your benefit size.
• Years of Earnings: This shows the total number of working years in your record (past and future). The closer this is to 35 (or more), the stronger your record.
• Zero-Earning Years: This critical number shows how many years of $0 earnings are being used in your 35-year average. A number greater than zero indicates a clear opportunity to improve your benefit by working longer.
• Estimated PIA (Primary Insurance Amount): This is your estimated monthly Social Security benefit at full retirement age, calculated from your AIME. Your actual benefit will be lower if you claim early or higher if you delay.
• Earnings History Strength: This score gives you a quick read on your AIME potential. A high score (80+) suggests a solid record with 35+ years of earnings. A lower score suggests there are zero-earning years pulling down your average.
• AIME with Additional Working Years Chart: This bar chart visualizes the power of working longer. It shows how each additional year of work at your expected future earnings can replace a low or zero-earning year, boosting your AIME.

If your estimated AIME is lower than you'd like, there are several ways to increase it.

1. Work for at least 35 years. This is the most effective way to improve your AIME. Each year you work up to 35 eliminates a zero from your calculation.
2. Work longer to replace low-earning years. Even if you already have 35 years of earnings, working an additional year at a high salary can replace a year of low earnings from decades ago (e.g., a part-time job in college), leading to a higher AIME.
3. Increase your earnings. Since the AIME is based on your income, earning more will boost your 35-year average. This is effective up to the annual Social Security wage base limit ($176,100 in 2025, adjusted annually).
4. Check your earnings record for errors. Visit the Social Security Administration's website (SSA.gov) to view your official earnings record. If you find any errors (like a year with missing income), you can submit documentation to have it corrected.

Deciding when to take Social Security is another key decision. Delaying your claim past full retirement age increases your monthly benefit, though it doesn't change your underlying AIME.

• Forgetting about the 35-year rule. Many people assume all their working years are simply averaged. Understanding that only the highest 35 are used is key to planning.
• Ignoring zero-earning years. A 25-year career of high earnings can result in a surprisingly low benefit because ten zero-earning years are factored into the AIME.
• Confusing AIME with the final benefit. AIME is the input, not the output. Your actual benefit is the PIA, which is then adjusted based on your claiming age.
• Not checking your official SSA record. Your memory of past earnings can be faulty. Always verify your numbers against your official record on SSA.gov to ensure accuracy and spot any errors.