My husband has a small business that he registered as an LLC, he is the owner and only employee. Do I need to file a separate tax form for his business or include it on our personal taxes?
He also needs to fill out a W9 form for a company he did work for and I don't know if he is a sole proprietor, disregarded entity, or a S- Corp?
He should file the LLC income and expenses on his personal tax return, as self-employment income on a schedule C, provided he didn't elect to file it as a corporation. For the W-9 form, he would be considered a disregarded entity.
Where would I check to see if he elected for it to be a corporation?
The election would have to have been made and accepted by the IRS.
First, your LLC has to file Form 8832 (Entity Classification Election) to be taxed as a corporation, then file Form 2553 (Election by a Small Business Corporation) to change your tax status to S Corporation.