Background: My mother died in December 2021 at the age of 96 with an IRA that named my sister and me as beneficiaries. Half of her IRA was distributed to an inherited IRA for me in early 2022. I am older than 72. (My mother withdrew 2021's RMD prior to her death, so that's not at issue.)
Question: Am I required to make an RMD in 2022? If so, how much? Per IRS Pub 590-B, it looks as if I can choose to take RMDs on the basis of (a) my life expectancy, (b) the 5-year rule, or (c) the 10-year rule. Whichever I choose, the IRA must be completely withdrawn by 12/31/2031. Is this interpretation correct?
In addition, I'm uncertain on what amount the RMD should be calculated - my inherited IRA's opening balance or half of the balance on 12/31/2021, prior to its distribution to my inherited IRA?
