Yes, I meant Section 475(f) for my stock trading activities.
I made the MTM election last year, and this is the first year I report my trading Gain and Loss using this method.
In another thread, DaveF1006 explained how to enter these gains and losses in Part II of Form 4797. (https://ttlc.intuit.com/community/business-taxes/discussion/will-turbo-tax-work-if-i-am-a-full-time-...)
I held some stock positions in 2020 that are not closed by 12/31/2020. For MTM reporting to work, I need to do the 481(a) adjustment and file 3115.
My question is how I can enter that adjustment in my tax return. Do I report this adjustment as another entry of Gain and Loss in Line 10 of Form 4797?
