I had tried to make something like this by hand, but I couldn't space the lines evenly so I googled it and found your chart. It's literally exactly what I had pictured in my head, minus the headache of doing it myself. We're using it to pay off our raw land purchase, and I wanted to add 'reward points' at the 25/50/75 intervals, like purchasing our home design plans; so I built all that into the debt amount. Only one square left in our old, hand made chart before we start this one. Thanks so much for the excellent free resource!