IRS Underpayment Penalty Letter: What Triggers It and What to Do About It

Opening an envelope from the Internal Revenue Service—like Notice CP30 or Notice CP14—can trigger immediate stress, especially during retirement when income streams shift from steady paychecks to pensions, Social Security, and IRA distributions. An IRS underpayment penalty occurs when you pay too little federal tax throughout the year, either through withholding or quarterly estimated payments. Fortunately, you can fix this situation, request a penalty waiver if you recently retired at age 62 or older, and prevent future penalties using simple tax strategies. Here is everything you need to know about what triggered your IRS penalty notice and how to handle it step by step.