Computation of partial annuity reduction
Primary source
Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.
Full Text
If a court order or the death of a current or former spouse results in providing less than the maximum permitted survivor reduction under § 842.613, the reduction in the employee's annuity will be 10 percent of the amount of the employee's annuity on which the survivor benefits will be computed (called the “base”).
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.