Retirement tax questions

The financial institution or IRA custodian should calculate the RMD for you.  Note that your RMD is based on the total value of *all* Traditional IRA accounts, but the RMD can be satisfied by taking a distribution from any IRA account.   Each IRA custodian would only calculate the RMD for the IRA account that they hold.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**