My K-1 shows a number nobody explained to me
Every March your K-1 arrives with a taxable income figure that has nothing to do with what actually landed in your checking account. You took distributions all year like a paycheck, covered the mortgage and the truck payment with them, and now the K-1 says you owe tax on income you already spent building the business or paying down debt. Nobody sat down with you in July or October to explain that the two numbers were never going to match.
A preparer who only meets you once a year in April is reading the K-1 after the fact instead of helping you plan around it while there's still time to adjust withholding, set money aside, or make a retirement contribution before December 31. By filing season the only thing left to do is report what already happened.
Owners who never reconcile distributions against K-1 income routinely find a five-figure balance due in April with no cash set aside to cover it, on top of an underpayment penalty the IRS charges quarter by quarter for not paying as the income was earned.