The Windfall Elimination Provision (WEP) affects members who apply for their own (not spousal) Social Security benefits. If you do not have 30 years of Social Security covered work, a Social Security WEP Calculator can assist you to calculate the complex formula that will tell you your benefit amount. This is a link to the actual calculator that Social Security provides.
How can I figure my Government Pension Offset?
The Government Pension Offset affects individuals who apply for Social Security spousal benefits. The amount of their spousal benefits will be reduced by two-thirds of their government pension.
Learn more about GPO from the Social Security Administration’s website.