I’m trying to figure out how to calculate interest owed on unpaid royalties within Panola County TX. Production has been small yet consistent since I took over ownership of my interest. To date I have never received a single cent in royalties despite countless attempts to recoup including formal requests via certified mail. I took over ownership of my interest back in December of 2020 with royalties owed from January 2021 production on. Seeing that we are talking about 5+ years of interest I am struggling to understand how to calculate it. I’m reading conflicting information online about how to calculate this in Texas with some claiming its based on simple interest while others say compound. If anyone could point me in the right direction that would be awesome.