Hello,
My mom, aged 93, passed away in March 2018. I am 71. I inherited a part of her Roth IRA (there were other beneficiaries). I understand that I have to take Required Minimum Distribution (RMD) from my beneficiary Roth, starting this year. I also understand that I have to take all the money out of this Roth IRA by the end of the 5th year. Is this correct?
If so, can I take all of it out in year 5, or do I have to take out 20% each year as a RMD?
Or, are there other alternatives, such as taking out RMD based on my life expectancy, or not having to take any money out (as in the case of a regular Roth IRA)?

My mom, aged 93, passed away in March 2018. I am 71. I inherited a part of her Roth IRA (there were other beneficiaries). I understand that I have to take Required Minimum Distribution (RMD) from my beneficiary Roth, starting this year.=====>>> Since you?ve inherited a R-IRA, you still must take minimum payouts, but the withdrawals don?t count as taxable income, because your deceased mother already took the income tax hit.so, Required Minimum Distributions are mandatory and distributions must begin no later than 12/31 of the year following the year of your mother?s death. in general, people usually think that R-ira means no RMD ,but this?s true for your own R-IRA but not the R-IRA that you inherited from your mother. You can stretch out the payouts so you get them over your lifetime, but you must take the first payout by Dec. 31 of the year following the year of death of the original owner, your mother. If you fail to do this on time, you?ve fallen into the 5-year trap and must deplete the inherited R-IRA within 5 years of the original owner?s death.



I also understand that I have to take all the money out of this Roth IRA by the end of the 5th year. Is this correct?====>> it depends;You , by Dec. 31 of the year after the year in which your mother passed away, you,assaid, must have begun taking required minimum distributions annually. If you don't make the RMD by that deadline, then, you will need to have withdrawn all the assets by the end of the 5th year after the year of death




If so, can I take all of it out in year 5, or do I have to take out 20% each year as a RMD?
Or, are there other alternatives, such as taking out RMD based on my life expectancy, or not having to take any money out (as in the case of a regular Roth IRA)?=====>>>correct.the options available for you in your case are Lump-sum distribution.
And you may establish an inherited R-IRA and deplete the entire balance by Dec. 31 of the year containing
the fifth anniversary of the IRA holder?s deathas said previously.
The RMD you will be subject to is based upon the IRS's single life expectancy table. The value of the account on Dec. 31 of the year death is divided by your, the beneficiary's life expectancy, listed on that table to obtain the first RMD amount.
I am not a retirement plan expert, so you need to contact a CERTIFIED FINANCIAL or retirement. PLANNER for more info in detail.

Ah, OK, @Wnhough, thank you for your answer!