Tax Planning for the Five Phases of Retirement with Sean Mullaney

Are you sure aggressive Roth conversions are improving your retirement security—or could they be adding tax complexity for very little real benefit? In this session from the Bogleheads® 2025 Conference, advice-only financial planner and author Sean Mullaney walks through his “five tax planning phases of retirement” and makes a provocative case: for many retirees, traditional tax-efficient withdrawal strategies and smart use of the tax code can be more powerful than large, forced Roth conversions. Using clear examples and real tax return scenarios, Sean explains how to structure withdrawals across taxable accounts, traditional IRAs/401(k)s, and Roth accounts from early retirement through widowhood. He shows how tools like the 0% long-term capital gains bracket, the Affordable Care Act premium tax credit, Qualified Charitable Distributions (QCDs), and the new senior deduction can keep effective tax rates surprisingly low—sometimes even at or near 0%—while still supporting a comfortable lifestyle. Along the way, he introduces concepts like the Tailored Taxable Roth Conversion (TTRC) and the “hidden Roth IRA,” illustrating how ordinary retirees can use the tax system to their advantage without elaborate schemes. Sean also demystifies some of the biggest fears in retirement planning: required minimum distributions (RMDs), the so-called “widow’s tax trap,” inherited IRAs under the 10-year rule, future tax hikes, and Medicare IRMAA surcharges. Rather than treating these as catastrophic threats, he reframes them as manageable nuisances in the context of a successful retirement, especially when layered into a thoughtful, phase-by-phase plan. In keeping with the John C. Bogle Center for Financial Literacy’s mission, this talk helps investors become better-informed, more confident stewards of their retirement savings—using simple, evidence-based strategies that align with the Bogleheads® philosophy. If you want a grounded, numbers-first perspective on retirement tax planning—rooted in the Bogleheads® tradition of evidence-based, low-cost investing and investor education—this talk will help you see your Roth conversions, RMD strategy, and withdrawal plan in a very different light. Chapters: 0:00 Introduction 2:13 Five phases of retirement 2:50 Early retirement 6:50 The Golden Years 17:56 Age 70 to RMDs 22:48 Beginning of RMDs 28:48 Widower's Penalty 33:15 What Abouts 39:16 Q& A Recorded on October 18, 2025. The John C. Bogle Center for Financial Literacy (https://boglecenter.net/) is a non-profit organization dedicated to improving financial literacy. The Center’s mission is to expand the legacy of John C. Bogle, the founder of Vanguard, by promoting the principles of successful investing and financial well-being through education and community. The Center envisions a world of well-informed, capable, and empowered investors. Community outreach is achieved through multiple social media channels, the Bogleheads® forum, wiki, and blog, as well as in-person and virtual Bogleheads® chapters worldwide. Bogleheads® is a registered trademark of the John C. Bogle Center for Financial Literacy.