Have you read the book Profit First? If you have this is a sheet to help you divide up your business income as taught in the book.
PS If you haven't read the book I HIGHLY recommend it. It's changed the way I've run my business. You can get it on Amazon here (affiliate link)
This is a PDF digital download. As soon as your order is complete you will get the link to download and it will also be emailed to you.