What exactly is accounts receivable financing and factoring and how can it help a business?

I am doing freelancing for two different companies and I have several questions. I deliver for them digital files, such as research, PowerPoints or excel files. Do I need to add sales tax to the invoices? When and how do I file taxes? I have never worked before in California and just started working in October last year.

Has anyone ever used invoice financing for their business? How was the experience and what benefits did you get?

What are the tax changes I need to know about when filing my individual return for 2012?

Is commission rebate from the buyer's Realtor to the buyer a taxable income? Transaction was done outside of the escrow and 1099-Misc (Box 7) was issued to the buyer following January. 1) is this taxable income for the buyer and 2) if so, is he responsible for SE taxes as well?

I am a Nonresident Alien and I live in Ensenada Baja California Mexico. I’m about to buy many electronics. Total value would be around $12,000 for my personal use. I am building my own house and I want to buy from SEARS in Chula Vista, California, but I don’t want to pay double tax (in the US and Mexico) since I am going to import the merchandise to Mexico. Is there any way to avoid the payment of taxes in Chula Vista?

If I participate in my employer's 401K plan, can I also set up a SEP-IRA for my self-employment income?

Are you looking Business Setup company in Dubai?