A notice from Social Security in today's Federal Register:
We provide fee-based Social Security number (SSN) verification services to enrolled private businesses and government agencies who obtain a valid, signed consent form from the Social Security number holder. ...
To use CBSV [Consent Based Social Security Number Verification], interested parties must pay a one-time non-refundable enrollment fee of $5,000. Currently, users also pay a fee of $3.10 per SSN verification transaction in advance of services. We agreed to calculate our costs periodically for providing CBSV services and adjust the fees as needed. ...
Based on the most recent cost analysis, we will adjust the fiscal year 2016 fee to $1.40 per SSN verification transaction. New customers will still be responsible for the one-time $5,000 enrollment fee.