What is the future of a cryptocurrency developer?

Which washer/dryer will qualify for an energy-efficient tax credit?

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.

Can anyone share some tips for budding entrepreneurs. What are the do's and dont's for them.

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

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

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?