if you are the age to start taking RMD from your IRA or 401K accounts the plan should compute to amount for you and send you a letter saying how much you need to take out.
IRS RMD FAQs
https://www.irs.gov/retirement-plans/retirement-plan-and-ira-required-minimum-distributions-faqs
Q3. When must I receive my required minimum distribution from my IRA? (updated March 14, 2023)
You must take your first required minimum distribution for the year in which you reach age 72 (73 if you reach age 72 after Dec. 31, 2022). However, you can delay taking the first RMD until April 1 of the following year. If you reach age 72 in 2022, you must take your first RMD by April 1, 2023, and the second RMD by Dec. 31, 2023.
If you reach age 72 in 2023, your first RMD for 2024 (the year you reach 73) is due by April 1, 2025.
Here is a worksheet to calculate the RMD
IRA Required Minimum Distribution Worksheet | Internal Revenue Service
And see this post
https://ttlc.intuit.com/community/file-with-turbotax/discussion/my-wife-and-i-are-73-this-year-so-wh...
