The 2026 Roth Conversion Window: Why Tucson Retirees Need to Act Before RMDs Begin
Most retirees don't realize their biggest tax bill isn't coming from their paycheck — it's quietly waiting inside their traditional IRA.
If you're between the ages of 59 and 72 and living in the Tucson area, you may be sitting in one of the most valuable tax planning windows of your financial life — and most people let it close without taking action. In 2026, a unique combination of federal tax law stability, Arizona's favorable income tax structure, and a new senior bonus deduction has created a compelling case for converting traditional IRA or 401(k) funds to a Roth IRA before Required Minimum Distributions force the issue.
What Is a Roth Conversion — and Why Does It Matter?
A Roth conversion is the process of moving money from a pre-tax retirement account — such as a traditional IRA or 401(k) — into a Roth IRA. You pay income tax on the converted amount in the year of the conversion. In return, that money grows tax-free, and qualified withdrawals in retirement are never taxed again. Unlike a traditional IRA, a Roth IRA is also not subject to Required Minimum Distributions during your lifetime.
For the IRS rules on Roth conversions, see IRS Publication 590-A. At Global Investment Strategies, our retirement income planning approach treats a Roth conversion as one coordinated move within a larger strategic income plan — never a standalone transaction.
Why 2026 Is a Critical Year for Roth Conversions
Tax Rates Are Now Permanently Locked In
The One Big Beautiful Bill Act (OBBBA), signed July 4, 2025, permanently extended the TCJA tax rate structure. The 10%–37% federal brackets are no longer scheduled to sunset. The planning conversation now shifts from "should I convert?" to "how much should I convert each year?"
A New $6,000 Senior Bonus Deduction
For Arizona filers age 65 and older, a $6,000 senior bonus deduction sits on top of the standard deduction in 2026. For a couple both over 65, that's $12,000 in additional taxable income reduction — creating more room in lower brackets to execute a cost-efficient conversion. This provision is currently set to expire after 2028.
The Arizona Advantage: Why Tucson Retirees Are in a Unique Position
A Flat 2.5% State Income Tax
Arizona taxes all income at a flat 2.5% — one of the lowest flat rates in the nation. No bracket creep. No progressive penalty for larger conversions. The state-level tax cost of a Roth conversion is completely predictable, which simplifies the planning math considerably.
Social Security Is Not Taxed by Arizona
Arizona does not tax Social Security income at any level. That means Social Security income won't inflate your state tax exposure when you layer a Roth conversion on top of it. For federal treatment, visit SSA.gov. This coordination of income sources is central to GIS's retirement planning process.
No Arizona Estate or Inheritance Tax
Arizona imposes no state estate or inheritance tax. Roth IRA assets transferred to heirs are not subject to income tax on qualified distributions — making them among the most efficient legacy assets available. Learn how GIS integrates estate and income planning at our Estate Planning page.
The RMD Countdown: Why the Pre-RMD Window Is So Important
What Are Required Minimum Distributions?
Under current IRS rules, traditional IRA and 401(k) holders must begin RMDs at age 73 (age 75 for those born in 1960 or later, starting in 2033). The annual amount is calculated from your account balance and IRS life expectancy tables. Missing an RMD triggers a significant penalty. See IRS Topic No. 558 and IRS Publication 590-B for full details.
The "Trough Years" — Your Best Conversion Opportunity
The years between retirement and age 73 are your prime Roth conversion window. Salary has stopped. Social Security may not have started. RMDs haven't kicked in. Your taxable income is likely at its lowest point — which means conversions cost less in real tax dollars. Every dollar converted also reduces your traditional IRA balance, reducing the size of future RMDs and the tax burden they carry.
The Compounding Cost of Waiting
A retiree with $1.5 million in a traditional IRA at age 73 faces a first-year RMD of roughly $56,600 (using the IRS Uniform Lifetime Table). That amount stacks on top of every other income source — potentially pushing into a higher federal bracket, triggering IRMAA surcharges on Medicare premiums, and increasing the federally taxable portion of Social Security. Retirees who plan during the trough years control their income. Those who wait often find the IRS controlling it for them.
Key Considerations Before You Convert
Tax Bracket Management
Convert up to — but not beyond — the top of your current federal bracket. A multi-year conversion ladder is almost always more efficient than a single large conversion.
The IRMAA Impact on Medicare Premiums
Roth conversion income increases your MAGI, which triggers IRMAA surcharges on Medicare Part B and Part D premiums using a two-year lookback. A 2026 conversion affects 2028 premiums. Factor this in before sizing your conversion.
The 5-Year Rule
Each conversion starts its own five-year clock on the earnings. If you are age 59½ or older at conversion — as most pre-RMD retirees are — the 10% early withdrawal penalty does not apply to converted principal. Full rules at IRS Publication 590-B.
Pay Taxes from Outside Funds
Pay the tax bill from savings held outside your IRA. Using IRA money to cover the conversion tax reduces the principal that benefits from tax-free compounding — undermining the strategy's long-term value.
How GIS Approaches Roth Conversions as Part of a Strategic Income Plan
At Global Investment Strategies, a Roth conversion is never a standalone transaction. It is one coordinated element within a broader income plan that addresses Social Security timing, portfolio withdrawal sequencing, pension and annuity coordination, estate objectives, and your full Arizona and federal tax picture.
Doug McClure, GIS Founder and Managing Partner, has spent decades helping Tucson-area families — including business owners, high-net-worth households, and professionals approaching retirement — build income plans designed to last a lifetime. Jay Clifford, GIS Partner and Vice President, brings additional depth to the income planning and wealth coordination process.
To learn more, visit our Retirement Planning page or meet our team on the About Us page.
Frequently Asked Questions
Is there an income limit to do a Roth conversion in 2026?
No. There is no income restriction on Roth conversions — anyone with a qualifying pre-tax account can convert.
Can I convert a 401(k) directly into a Roth IRA?
Yes, in most cases. A 401(k) from a former employer can be rolled directly into a Roth IRA. See IRS rollover guidance.
I already started RMDs. Can I still convert?
Yes — but you must take your full RMD for the year before converting any additional amount. RMD dollars cannot be directly converted.
Does Arizona tax Roth IRA withdrawals?
Qualified Roth IRA withdrawals meeting the age (59½) and five-year requirements are not subject to Arizona income tax.
What is the deadline for a 2026 Roth conversion?
December 31, 2026. There is no April 15 extension for conversions.
Take the Next Step — Schedule a Roth Conversion Review with GIS
The 2026 window is open. But the conditions that make it favorable — stable tax rates, the senior bonus deduction, and a low-income trough period — won't hold indefinitely. The earlier you plan, the more flexibility you retain.
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Global Investment Strategies provides educational planning concepts and does not provide legal or tax advice. All strategies discussed should be reviewed with your qualified attorney, CPA, or tax professional before implementation.
