The IRS takes the distinction very seriously.
Many small businesses start out as casual pastimes. You help troubleshoot your friends’ computer problems in your spare time, and they start telling their friends and business contacts about you. Or you use your woodworking skills to build furniture for non-profit organizations or your sewing skills to make one-of-a-kind dolls for the neighbor kids.

There’s a point at which the Internal Revenue Service would consider you a business, obligating you to report your income and expenses on IRS forms and schedules come tax-filing time. So how do you know when you reach that point?
Don’t you feel a little twinge of anxiety when you receive a letter in the U.S. mail from the Internal Revenue Service? Personal correspondence from the IRS is scary. Did you make a mistake on your return? Are you being audited?
Ever since your first report card landed on your desk in grade school, you’ve been used to the concept of performance evaluation. While grades were important then since they had some impact on your future education and career, the stakes are higher now. Employee performance reviews are often tied to bumps in salary.
But even in a good economy, downsizing isn’t that uncommon. Businesses reduce their payrolls for a variety of reasons all the time. Whether it’s due to an ongoing cash flow problem, a merger or acquisition, or a reduction in products or services, all companies that must downsize have one thing in common: the tremendous challenges involved in orchestrating the layoffs and dealing with the emotions and changes in workflow for those who remain.
As a nonprofit organization, managing your financial accounts is a greater challenge than it is for many other types of small businesses. You have regulations and requirements that for-profit businesses don’t.
Don’t be fooled by the celebrity side of Twitter.