QuickBooks feels easy to use—until tax time arrives and you realize your books are a mess. Small business owners often make simple mistakes that cause headaches, extra work, and even risk IRS audits. Fixing these errors can take less than 30 seconds but saves you hours of stress later. Here are five common QuickBooks mistakes that 90% of small business owners make daily, and how to fix them quickly. 5 QuickBooks Mistakes Small Businesses Make and How to Fix Them Fast Mistake