This summary is not the rule. The rule text controls.
Rule 67.04 doesn't actually apply to post-judgment interest, despite what its title suggests. If you're looking for information on how interest is calculated on a judgment after a court decision, this rule won't help you.
Post-judgment interest rates and rules are covered elsewhere in Tennessee law, not in this section of the Rules of Civil Procedure. If you have a judgment and need to know how much interest applies while you wait for payment, you'll need to look at Tennessee's statutes on this topic instead, such as those found in the Tennessee Code Annotated.
This rule exists mainly as a placeholder, letting people know that this particular section doesn't cover the topic its title mentions. It was amended in 1998 to clarify this point, likely because people were mistakenly looking here for post-judgment interest guidance.
