I'm not an accountant or tax professional, but I do run my own business and submit sales tax. Sales tax is what is known as a "pass through" tax, as in, you collect it, but it is not considered revenue because you have to "pass" or remit it to your local government tax authority.
For example, I sell puzzles online. If I sell one to someone in New York, I don't collect sales tax. If I sell one to someone where I do business, my nexus, Georgia, then I collect not only the state sales tax, but also their county and sometimes city sales tax. Because I don't collect a lot of sales tax, I only file it once a month. I go to the the Georgia Department of Revenue, where I got my sales tax license, and I file total sales sourced to Georgia, what sales tax I collected, and taxable sales divvied up by location of Georgia purchases.
With that said, California taxes are a beast, and talking to a professional is probably the only way you will get a clear answer. I speak from personal experience of dealing with the California Franchise Tax Board.
There is also legislation being passed that has to do with e-sales collecting and remitting sales tax for every state, so that is something to be aware of in the future.
