It has been nearly 8 years since Tennessee changed the post-judgment interest rate by amending Tenn. Code Ann. § 47-14-121.
For years, the rate was set in stone–at 10%–and the new statute created a variable interest rate tied to the formula rate published by the Tennessee Department of Financial Institutions.
After starting at a very judgment-debtor friendly 5.25%, the rate has steadily increased over the past few years. Last year, it hit a new high of 7.5%.
But, effective January 1, 2020, the rate is heading in the opposite direction: The rate dropped to 6.75%.
Honestly, I don’t even care about the 0.75% drop. What drives me crazy is the constant changes in the post-judgment interest rate. It’s made calculating post-interest nearly impossible, since you have to constantly adjust the per diem.
In this robust Tennessee economy, I get weekly phone calls from closing companies, who discover one of my old judgments (and related judgment lien). And, yes, computing payoffs on old judgments is a wonderful task that I gleefully undertake, but it really used to be a lot simpler (and, also, this was one of my earliest reactions to the new statute).
I love collecting money for clients, but, holy smokes, I don’t always love math.
Creditors Rights 101 
From the TNCourts.gov website: “Beginning July 1, 2012, any judgment entered will have the interest set at two percent below the formula rate published by the Tennessee Department of Financial Institutions as set in Public Chapter 1043. The rate does not fluctuate and remains in effect when judgment is entered.”