Social Security Windfall Elimination (WEP) Calculator

What Is the Windfall Elimination Provision?

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The Windfall Elimination Provision (WEP) is a federal law that reduces Social Security benefits for workers who also receive a pension from employment not covered by Social Security. This includes many state and local government employees, some federal employees hired before 1984, and workers with foreign pensions.

The WEP exists because the Social Security benefit formula is progressive — it replaces a higher percentage of earnings for lower-income workers. Without WEP, someone who spent half their career in non-covered employment would appear to be a low earner (since only their SS-covered wages count), receiving a disproportionately generous benefit relative to what they paid into the system.

The WEP modifies the standard benefit formula by reducing the 90% replacement factor (applied to the first $1,174 of average indexed monthly earnings) to as low as 40%. This reduction can cut your Social Security benefit by up to $587 per month in 2026.

Who Is Affected by the WEP

You may be subject to the WEP if you meet both conditions: (1) you earned a pension from work where you did not pay Social Security taxes, AND (2) you also have enough Social Security credits (40+) from other employment to qualify for SS retirement benefits.

Common affected workers include: public school teachers in 15 states (including California, Texas, Ohio, Massachusetts, Illinois, and Connecticut), state and local government employees in non-Social Security states, police and firefighters with separate pension systems, railroad workers with Railroad Retirement benefits, and Americans who worked abroad under foreign pension systems.

If all your career was covered by Social Security, the WEP does not affect you. Similarly, if you never qualify for a non-covered pension, you are not impacted regardless of your SS earnings history.

How to Reduce or Eliminate the WEP

30-Year Rule: If you have 30 or more years of "substantial earnings" under Social Security, the WEP does not apply to you at all. The 2026 substantial earnings threshold is approximately $31,275. For those with 21-29 years, the WEP reduction phases out gradually — each additional year of substantial earnings reduces the penalty.

Years of Substantial Earnings and WEP Reduction: With 20 or fewer years of substantial SS earnings, you face the maximum WEP reduction (the 90% factor drops to 40%). From 21-29 years, the factor increases by 5 percentage points per year. At 30+ years, the full 90% factor is restored — no WEP penalty.

Guarantee Rule: The WEP cannot reduce your Social Security benefit by more than 50% of your non-covered pension. If your government pension is $800/month, the maximum WEP reduction is $400/month — even if the formula would otherwise reduce it more.

The Government Pension Offset (GPO)

Related but separate from the WEP, the Government Pension Offset reduces spousal and survivor Social Security benefits for people receiving government pensions from non-covered employment. The GPO reduces your spousal/survivor benefit by two-thirds of your government pension — often eliminating it entirely.

For example, if your government pension is $2,400/month, the GPO reduces your spousal SS benefit by $1,600 (two-thirds). If your spousal benefit would have been $1,200, the GPO eliminates it completely. Understanding both WEP and GPO is essential for retirement planning when a government pension is involved.

Frequently Asked Questions