When Your Side Project Becomes an IRS Target: The Tax Rules That Separate a Business From a Hobby
Thousands of taxpayers deduct losses from activities that the IRS classifies as hobbies rather than businesses, often without realizing the distinction exists. When the IRS disagrees with your Schedule C, the consequences extend well beyond losing the deduction—retroactive disallowance, accuracy-related penalties, and audit exposure can turn a modest tax savings into a costly mistake.