This is a big devlog post but I finished two more tabs: A retirement checker tab and a Tax advantage Comparison tab. For the retirement checker I aded the 4% rule comparison logic to it. During the coding I ran into many many bugs, one of them being a dollar sign error and I took rlly long to fix. Also I realized halfway through that the retirement mode was using the return rate and monthly contribution from another tab and it was messing everything up. For the tax advantage tab, I ran two columns where one is tax growth every year, and the other is taxes only at withdrawal. Making the tax loop was incredible hard and it took a long time. Additionally, for th equations themselves, it was all new information for me and I spent way too long writing the wrong equations over and over.