I finally updated the Excel Invoice Template to work well with Excel 2013. I modified the invoice from the feedback you gave me on the other templates. This one is cleaned up with indentations. Instead of having a Website URL (you could probably tell that I do a lot of web consulting work), I changed it to Payment Terms. I think you can change this to suit your needs.
As always, your feedback is important to me.
Here you go: Excel Invoice Template 2013