Tax Extensions: Do You Need to File One?

An IRS tax extension provides a six-month window to file a federal return, moving the deadline from April 15 to October 15, but it is not an extension of time to pay taxes owed. To avoid failure-to-pay penalties, taxpayers must estimate their liability and pay at least 90% of their current year tax or 110% of their prior year tax by the April 15 deadline. This technical breakdown features Corey Holstein, CPA (the "Tax Protector"), and Dean Barber discussing the mechanics of IRS Form 4868. We analyze the significant disparity between the Failure to File penalty (5% per month, capped at 60%) and the Failure to Pay penalty (0.5% per month), highlighting a 90% reduction in penalty costs simply by filing the extension. The discussion covers "Safe Pay" harbor rules, the "Matching Principle" for quarterly estimates, and the strategic use of IRC Section 401(k) and HSA contributions during the extension period to optimize forward-looking tax planning. At 26:52: A "Don't Do That" segment visually highlights why estimating $0 on an extension—even when taxes are likely owed—is a red flag that can invalidate the extension and trigger maximum penalties Extension vs. Payment: An extension grants more time for accuracy and documentation but requires 100% of the estimated tax bill to be settled by April 15. Penalty Mitigation: Filing Form 4868 reduces the potential monthly penalty from 5% (failure to file) to 0.5% (failure to pay). The RMD Withholding Strategy: Taxpayers can satisfy quarterly estimated tax requirements by directing an IRA custodian to withhold the total annual tax liability from a Required Minimum Distribution (RMD) in December, as the IRS treats withholdings as paid evenly throughout the year. Audit Myth-Busting: Filing an extension is not an audit trigger; however, filing an inaccurate or fraudulent return on time carries higher risk than a late, accurate return. Education center: https://bit.ly/4rDnmv3 Retirement Plan Checklist: https://bit.ly/4bWZaiA 0:00 Proactive vs. Reactive Tax Planning 01:23 Why Accuracy Trumps the April 15 Deadline 03:23 Comparing Penalties: Failure to File vs. Failure to Pay 05:10 IRS Exceptions: Natural Disasters and Cognitive Decline 08:30 Deep Dive into IRS Form 4868: The Extension Mechanics 09:45 The Golden Rule: Extension to File is NOT an Extension to Pay 11:04 Safe Pay Rules: The $90\%$ vs. $110\%$ Strategies 14:06 Avoiding Overpayment: Why One-Time Gains Skew Estimates 18:36 Audit Myths: Does an Extension Put You on the IRS Radar? 21:48 Quarterly Tax Hacks: The "One Check" Extension Method 23:40 The RMD Withholding Trick to Simplify Quarterly Taxes 26:52 Don’t Do That: The Danger of the "$0 Estimate" Extension 28:49 2026 Closing Tips: Consolidated 1099s and Postmark Deadlines 32:02 Fiduciary Disclosure and Planning Resources Subscribe on YouTube to Catch our Videos: https://www.youtube.com/@AmericasWealthManagementShow?sub_confirmation=1 https://youtu.be/KN5tIHSo3sY?si=I8fyj_cp_uz8sw_o Sources: https://www.irs.gov/forms-pubs/about-schedule-c-form-1040 https://www.modwm.com/how-filing-for-a-tax-extension-works/ https://www.irs.gov/payments/failure-to-file-penalty https://www.irs.gov/payments/underpayment-of-estimated-tax-by-individuals-penalty https://www.fidelity.com/learning-center/smart-money/hsa-contribution-limits https://www.irs.gov/retirement-plans/plan-participant-employee/retirement-topics-required-minimum-distributions-rmds #retirementplanning #taxplanning Expert insights provided by Corey Holstein, CPA, and Dean Barber of Modern Wealth Management. This content adheres to the fiduciary standard, emphasizing proactive, forward-looking tax planning rather than reactive "tax collection". _______________ Investment advisory services offered through Modern Wealth Management, LLC, a registered investment adviser. The views expressed represent the opinion of Modern Wealth Management an SEC Registered Investment Adviser. Information provided is for illustrative purposes only and does not constitute investment, tax, or legal advice. Modern Wealth Management does not accept any liability for the use of the information discussed. Consult with a qualified financial, legal, or tax professional prior to taking any action.