This was my first major project using D3 so there was a bit of a learning curve to get it to do what I wanted, but I was happy with the results in the end. I relyied heavily on D3Kit to allow the charts to be responsive, and Google Docs&#x2F;Tabletop to manage the data.<p>While a lot of the charts appear simple, there was a lot of work done long before I could even get to the point of making a plot by combining all the different tax rates. It turned out to be a much larger project than I expected.