If you're a federal employee, you've likely heard the term "high-3" in connection with your retirement benefits. The high-3 average salary is a critical factor in determining the size of your federal pension, and understanding how it works can help you make more informed career and retirement timing decisions.
What is the High-3?
The high-3 average salary (sometimes called "high-three") is the highest average basic pay you earned during any three consecutive years of federal service. For most employees, this is the final three years before retirement, since salary generally increases over a career.
This figure is used directly in the formula that calculates your FERS or CSRS annuity (pension) payment.
How It's Calculated
The calculation looks at your basic pay over the 36 consecutive months where your average pay was highest. Important points to understand:
- Basic pay includes your salary, locality pay, and certain other regular pay
- Not included are overtime, bonuses, cash awards, or premium pay (night differential, Sunday premium, etc.)
- The three years must be consecutive — you cannot pick and choose the three highest individual years
- Part-time service is calculated using the full-time rate of pay, but the annuity is then prorated based on your actual work schedule
Why It Matters
The high-3 is one of two key variables in the pension formula (the other being years of creditable service). Even modest changes in your high-3 can meaningfully affect your monthly annuity for the rest of your life.
Under FERS, the basic annuity formula is:
- 1% of your high-3 average salary, multiplied by years of service
- Or 1.1% if you retire at age 62 or later with at least 20 years of service
Under CSRS, the formula is more generous but also more complex, with multipliers that increase at different service milestones.
Common Questions
Does a promotion in my last year significantly help? A promotion or within-grade increase in your final years of service will raise your high-3, but remember that it's an average over 36 months — so a late-career increase is spread across three years.
What if I take a lower-paying position before retiring? Moving to a lower-graded position could potentially reduce your high-3 if those lower-paid months become part of your highest 36-month period.
Can I use my high-3 from earlier in my career? Yes — the high-3 is the highest consecutive 36-month period at any point in your career, not necessarily the last three years. If you earned more earlier (which is uncommon but possible), that period would be used.
Planning Considerations
Understanding how the high-3 works can inform decisions about:
- Timing of retirement relative to expected pay increases
- The impact of step increases and promotions near retirement
- Whether accepting a different position could affect your pension calculation
- The value of continuing to work beyond initial retirement eligibility
Your agency's HR office or retirement counselor can help you estimate your high-3 and projected annuity based on your specific pay history.
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This content is for informational and educational purposes only. It does not constitute financial or retirement planning advice.