If you have a cake remaining at the end of a level on the display case or anywhere else, do not click on the last money remaining until after you have picked up the cake. You will not be penalized for the cake. Also, bake the most complex cake possible at the start of each level and put it on the stand. It almost always sells. If not, just hold it when you click on the last payment. If you have a cake at the end of the round that has not sold, do the following as to not lose any money. Give the last customer their cake. Do not pick up the money. Pick up the unsold cake. Then, pick up the payment for the cake. You will not be charged for the cake that is in your hands. This will save you a lot of money when it comes to the double-layered cakes with decorations.