What Tax Class to use for Section 603 Roth Catchup $150,000 analysis?
In reading Oracle's Secure 2.0 - Section 603 Benefits Roth Catch-up Enhancement supplemental user documentation (December 2025 Version 1.0)….
Page 4 states "use prior-year FICA Earnings", which would be Tax Class F, in multiple places.
Page 4 and 7 states use Tax Class D (OASDI - EE).
Which is correct?
The document (attached) seems to use these Classes interchangeably? Maybe I'm missing something!