The guidance published by the state says explicitly that a business collects the tax from the consumer as an agent of the state, and that the taxes collected belong to the state rather than to the business. If it was a tax on the business, then it could be paid later out of the business’s general funds.

Whether you believe the above or not - and I’m not going to discuss that part further, because this is all easy to find online - the fact remains that most sales taxes must be charged separately from the product price at checkout. There are, as I said, exceptions for bulk goods.