For example, a quick Google search shows administrative overhead as around 0.5% of benefits: https://www.cbpp.org/research/social-security/top-ten-facts-...
https://fedscoop.com/problem-project-threatens-progress-soci...
> The program, called the Disability Case Processing System, or DCPS, was designed to improve case processing and enhance customer service. But six years and $288 million later the program has “delivered limited functionality and faced schedule delays as well as increasing stakeholder concerns
For the main system they're still using COBOL, which has no Date data type, causing issues even in 2025.
I have a feeling you might enjoy that book as it goes into a LOT of detail about government dysfunction with respect to software.
I found the book eye opening and personally it provided me with some new perspective.