Can anyone please tell me the justification for TIAA-CREF charging different expenses for Mutual Funds vs. Retirement Class Mutual Funds (403b & IRA).

For example, the Equity Index (TINRX) in Mutual Funds has a net expense ratio of 0.23%.  Retirement Class Equity Index (TIQRX) has a net expense ratio of 0.34%.

Mutual Funds Money Market (TIRXX) has a net expense ratio of 0.25%.  Retirement Class Money Market (TIEXX) has a net expense ratio of 0.39%.

The CREF Variable Annuity Account Money Market Account where I currently have my 403(b) has an expense charge of 0.49%.

Thanks for your reply.

~ Ed