You would have to ask the agent of the IRA or plan you have.... It is based on the RMD tables and total value of your plans..... Normally the agent tells you but, when you have multiple, you may need to calculate it Here is the worksheet https://www.irs.gov/pub/irs-tege/uniform_rmd_wksht.pdf
**I don't work for TT. Just trying to help. All the best.
***Say "Thanks" by marking as BEST ANSWER and clicking the thumb icon in a post and that I solved your question
**Mark the post that answers your question by clicking on "Mark as Best Answer" I am NOT an expert and you should confirm with a tax expert.