The Right Roth Conversion Strategy Can Reshape Your Entire Tax Picture in Retirement

Converting to a Roth IRA isn't a one-time decision — it's a multi-year planning opportunity that most advisors miss because they're not looking far enough ahead.

 

For pre-retirees and retirees in New Hampshire, the years between leaving work and taking Social Security or required minimum distributions are often the most valuable window for Roth conversion planning. Income is lower. Tax brackets are temporarily favorable. And every dollar converted now is a dollar that grows tax-free for the rest of your life. We help clients identify that window, model the tradeoffs precisely, and execute a conversion strategy that fits their full financial picture — not just this year's tax return.

Why Roth Conversions Are a Retirement Tax Planning Tool, Not Just an Account Move

Most people think of a Roth conversion as a simple transaction: move money from a traditional IRA to a Roth IRA and pay the tax now. That's the mechanics. The strategy is something different entirely.

 

Done well, Roth conversion planning is about controlling which tax brackets you occupy — and when. It's about reducing the size of pre-tax accounts that will eventually force taxable distributions through RMDs. It's about creating a pool of tax-free income that gives you flexibility when markets move, when Medicare surcharges kick in, or when you want to leave something behind to your heirs without a tax burden attached. Roth IRA conversion strategy isn't a product. It's a decision framework that runs through the center of a well-built retirement plan.

Who Benefits Most from a Roth Conversion Strategy

Roth conversions aren't right for everyone, and the timing matters as much as the decision itself. The clients who tend to benefit most share a few common characteristics:

 

  • Pre-retirees in their late 50s or early 60s who have stepped back from peak income and have a gap before Social Security begins
  • Retirees with significant traditional IRA or 401(k) balances who face large projected RMDs at age 73 and beyond
  • Individuals in a lower tax bracket now than they expect to be in 10 to 15 years
  • Clients who want to reduce their taxable estate and pass Roth assets to heirs income-tax-free
  • Business owners with variable income years that create temporary planning windows
  • Anyone currently subject to IRMAA Medicare surcharges who wants to model the long-term tradeoff of paying tax now versus managing income later

 

If you're in New Hampshire and approaching retirement with a large pre-tax account balance, the Roth conversion question is almost certainly worth modeling — even if the answer turns out to be a partial conversion or a phased approach over several years.

What Makes Our Approach Different from a Standard Tax Review

Many financial advisors mention Roth conversions. Few build a full multi-year conversion strategy. The difference comes down to whether the advisor is managing your tax picture as a long-term variable or simply reacting to each year's return.

 

At F3 Capital, Roth conversion planning is integrated into your comprehensive financial plan — not treated as a standalone transaction. We look at your full income picture, your projected RMDs, your Medicare costs, your estate goals, and your cash flow needs before recommending a single dollar of conversion. And because we're a fiduciary, fee-based firm with no product quotas or commission incentives, our recommendation is always based on what the math supports for your situation.

How We Build a Roth Conversion Plan

Tax Bracket Mapping

We start by projecting your income across the next 10 to 20 years — Social Security timing, pension income, investment distributions, RMDs, part-time work, and any other sources. That projection tells us which brackets you'll occupy in each year and where the conversion opportunity actually lives. Most clients are surprised to find how much room exists in the 12% or 22% bracket before they hit the next threshold.

RMD Reduction Modeling

One of the strongest arguments for Roth conversion before RMD age is the long-term reduction in forced taxable income. We model your projected RMDs at current account growth rates and show you what those distributions will do to your tax rate, your Medicare premiums, and the taxation of your Social Security benefits. Then we model what a phased conversion strategy would do to that same picture. The comparison is often striking.

Multi-Year Conversion Sequencing

A single large conversion is rarely the right move. We identify the optimal annual conversion amount — the figure that uses available bracket space without triggering unnecessary tax, IRMAA surcharges, or other income-sensitive thresholds. Then we build a year-by-year conversion schedule that fits within your broader cash flow and tax plan.

Coordination with Our CPA Partner

Roth conversion planning lives at the intersection of investment strategy and tax planning. Our in-house CPA, Maria, works alongside our planning team to ensure every conversion decision is modeled against your actual tax situation — not a generic projection. That integration means your conversion plan and your tax filings are aligned from the start, not reconciled after the fact.

Estate and Beneficiary Considerations

Roth IRAs carry different rules for inherited accounts than traditional IRAs, and those rules matter if you're planning to pass assets to children or other beneficiaries. We coordinate with our estate attorney partner to ensure your Roth conversion strategy is consistent with your broader estate plan — including beneficiary designations, trust structures, and the 10-year rule that now governs most inherited IRAs.

Roth Conversion Planning: Frequently Asked Questions

  • When is the best time to do a Roth conversion in New Hampshire?

    The most favorable window is typically the years between retirement and age 73, when required minimum distributions begin. During this period, income often drops, bracket space opens up, and Social Security may not yet be fully taxable. New Hampshire has no state income tax on wages or investment income, which can make the federal bracket analysis even more impactful for NH residents.

  • How much should I convert to a Roth IRA each year?

    The right conversion amount depends on your current taxable income, the width of your available tax bracket, your projected RMDs, and income-sensitive thresholds like IRMAA Medicare surcharges. There's no universal answer — the goal is to convert up to the point where the marginal tax cost of the next dollar converted exceeds the long-term benefit. We model this precisely for each client.

  • Will a Roth conversion increase my Medicare premiums?

    It can, if the conversion pushes your modified adjusted gross income above IRMAA thresholds. IRMAA surcharges apply two years after the income year, so a large conversion in 2025 could affect your Medicare premiums in 2027. We factor IRMAA into every conversion scenario we model so you're not caught off guard.

  • Can a Roth conversion reduce my required minimum distributions?

    Yes. RMDs are calculated based on the balance in your pre-tax accounts. Every dollar converted to a Roth IRA before RMD age reduces the future balance subject to those forced distributions — which can lower your taxable income, reduce Medicare surcharges, and decrease the portion of Social Security subject to tax in later years.

  • Is it too late to do a Roth conversion if I'm already 70?

    Not necessarily. While the window before RMDs is often the most efficient, conversions can still make sense after 70 depending on your account balances, your tax bracket, and your estate goals. Note that once RMDs begin at age 73, you must take your RMD before converting — you cannot convert the RMD amount itself. We'll model whether conversion still makes sense in your specific situation.

  • How does a Roth conversion affect my heirs?

    Roth IRAs passed to non-spouse beneficiaries are subject to the 10-year rule under current law, but qualified distributions remain income-tax-free for those heirs. This is a meaningful advantage compared to inheriting a traditional IRA, where every dollar withdrawn is taxable as ordinary income. If leaving a tax-efficient legacy is part of your plan, Roth assets are often the most valuable thing to pass on.