Keeping up a single-member LLC is even easier and cheaper than maintaining a multiple-member one. Like a traditional LLC, a single-member LLC can elect to be taxed as a corporation. If you don’t make this election, however, your single-member LLC is treated as a “disregarded entity.” In other words, you won’t be required to file a separate tax return for your LLC. Instead, you can continue to report your self-employment income on Schedule C and save on tax preparation fees. You also won’t encounter any minimum tax fees for operating a single-member LLC. If you’re in a state with a high minimum tax fee for traditional LLCs — California’s minimum tax is a whopping $800 a year, for example — you can potentially save hundreds of dollars.

http://quickbooks.intuit.com/r/structuring/the-single-member-llc-an-ideal-choice-for-solopreneurs/