How do you think you request TTS qualification? Both individuals and entities start by sending 475(f) to IRS. IRS will look at your past tax returns to make determination (my assumption). What’s your understanding?
https://fairmark.com/investment-taxation/traders/mark-to-market-election-1/
WRONG!
MTM election (IRS form 3115, change of accounting method) IS NOT required or necessary for TTS qualification. However TTS -is- required for making a valid MTM election.
Furthermore, TTS qualification must be met each tax year, whereas MTM accounting once accepted, remains valid until revoked by IRS... NOT qualified for TTS would be one reason for MTM to be revoked.