The General Schedule (GS) is designed to reward longevity and performance with steady step increases. However, federal law dictates that a standard civil servant on the GS scale cannot make more money than the highest-level executives and political appointees running the government.
Because of this rule, your combined Base Pay plus Locality Pay is subject to a strict, non-negotiable maximum limit. If you work in a high-cost locality like San Francisco, New York, or Washington D.C., you will likely hit this ceiling long before you reach GS-15, Step 10.
1. The Level IV Cap (EX-IV)
The ceiling for the General Schedule is not a specific GS number; it is tied directly to a completely different pay scale called the Executive Schedule (EX).
Step-by-Step Execution
Here is how the government applies the cap to your paycheck:
Step 1: Identify the EX-IV Rate. The Executive Schedule has five levels (EX-I through EX-V). By law, GS locality pay is capped at the official salary rate for Level IV of the Executive Schedule (EX-IV).
Step 2: Calculate Your Uncapped Salary. HR takes your GS Base Pay (based on your grade and step) and adds your official Locality Pay percentage.
Step 3: The Cap Application. If your combined salary (Base + Locality) is mathematically lower than the current year's EX-IV rate, you get your full salary. If your combined salary exceeds the EX-IV rate, your locality pay is automatically reduced so that your final gross pay matches the EX-IV rate exactly down to the penny.
The Foundation
This cap is legally mandated by 5 U.S.C. 5304(g)(1). Congress established this ceiling to ensure a proper hierarchy of compensation—meaning a career GS-15 director should not take home a higher base salary than the Senate-confirmed Assistant Secretary they report to.
2. The Reality of Pay Compression
The most frustrating side effect of the EX-IV cap is "Pay Compression." Because locality percentages in major tech and finance hubs have grown so high, the GS scale crashes into the EX-IV ceiling much earlier than intended.
Step-by-Step Execution
Here is how pay compression actively impacts your earning timeline in high-cost areas:
Step 1: The GS-15 Flattening. In cities like San Francisco or New York, the locality rates are massive (often exceeding 40%). Because of this, a GS-15 will hit the EX-IV pay cap around Step 4 or Step 5.
Step 2: Zero-Dollar Step Increases. If you hit the cap at Step 5, you will still officially earn your Within-Grade Increases (WGIs) for Steps 6, 7, 8, 9, and 10 on paper. However, because you are already at the EX-IV ceiling, your actual take-home pay will not increase by a single cent. A GS-15 Step 5 and a GS-15 Step 10 make the exact same salary in these cities.
Step 3: The GS-14 Squeeze. Pay compression is no longer just a GS-15 problem. In the highest-paying localities, high-step GS-14s (usually Steps 8, 9, or 10) are now also hitting the EX-IV cap. This means a GS-14 Step 10 could be making the exact same salary as their GS-15 boss.
Pay Compression Visualizer
Adjust the locality percentage and EX-IV cap to see exactly when GS steps hit the ceiling.
Grade Selection
Hard ceiling set by Congress. Default: $191,900 (2026).
Base pay rates reflect official OPM General Schedule pay tables effective January 2026. Locality pay is applied as a flat multiplier for illustrative purposes.
The Foundation
Pay compression is a known, heavily debated issue within the Federal Salary Council and the Office of Personnel Management (OPM). Because the EX-IV rate is determined by Congress (and is often frozen for political reasons), while GS locality rates continue to rise based on BLS market data, the gap between the two scales continues to shrink every year, crushing more and more employees against the ceiling.
Key Takeaways
- 01The EX-IV Limit: Your Base Pay plus Locality Pay can never exceed the salary of Level IV of the Executive Schedule.
- 02Pay Compression: In high-cost areas (San Francisco, NYC, DC, Seattle), GS-15s and high-step GS-14s often hit the cap, meaning subsequent step increases result in zero extra pay.
- 03Base Pay Still Matters: Even if you hit the cap, your underlying "uncapped" Base Pay is still used to calculate certain benefits, like your life insurance coverage amounts.
- 04Premium Pay Cap: There is a separate, secondary cap for overtime and premium pay (usually capped at the biweekly rate of a GS-15, Step 10, or EX-V), ensuring your base salary plus overtime doesn't exceed executive limits.
Official Sources & Further Reading
- 5 U.S.C. 5304 (Locality-Based Comparability Payments)
The statutory law establishing the EX-IV hard cap on locality payments.
- OPM Fact Sheet: Maximum GS Pay Limitations
The official Office of Personnel Management guide detailing how the cap is applied.
- OPM Executive Schedule (EX) Pay Tables
The official repository to check the current year's EX-IV salary limit.
Pay Compression Visualizer
Adjust the locality percentage and EX-IV cap to see exactly when GS steps hit the ceiling.
Grade Selection
Hard ceiling set by Congress. Default: $191,900 (2026).
Base pay rates reflect official OPM General Schedule pay tables effective January 2026. Locality pay is applied as a flat multiplier for illustrative purposes.