You have some very basic misunderstandings about the different taxes that apply to your venture, and where they are to be paid. Sales taxes owed to a state are paid separately than taxes on profits or capital gains that may fall due to Uncle Sam, or taxes on ordinary income that may pass through to the individual owners of your entity (is it a corporation, sole proprietorship, or LLC?). The best source of advice on this subject is a CPA.
Here's a link to a recent CNN news report that may help clear up some of the misconception. Keep in mind that until the bill passes congress (both house and senate) and is signed by the president, it's not yet law.
Evan A. Nielsen is licensed to practice law in California and handles federal tax matters throughout the U.S. The information provided here is for educational purposes only and is not intended as legal advice for a particular matter. This response does not create any attorney-client relationship with the author. For specific advice about your particular situation, please consult an attorney.
To directly answer your question, there are not any new federal laws affecting sales tax, at least not yet. There is a bill going through congress right now called the Marketplace Freedom Act that has passed the Senate but appears to be held up in the House of Representatives. Under this law, a company that sells more than $1,000,000 remotely (basically sales outside your home state), then you would have to collect sales tax on behalf of your customers states. You are already supposed to be collecting sales tax in your home state (presuming it has a sales tax and you are selling products that are subject to tax).
The prior response is correct that you don't appear to have a good understanding of sales and use taxes. Generally, this is a tax on your business for the privilege of selling goods, but you are usually required to pass the tax on to your customer. So this is a tax added onto your selling price and usually paid for by your customer. You must collect the tax and remit the taxes to the state. There are an dizzying amount of rules and you have to keep very, very good paperwork.
At the moment, the law is merely a proposed law. It has been proposed for 3 years running.
I hope this answers your question.
James Sutton, CPA, Esq.