Utah · Retirement Income · Tax Planning · 2026
Roth Conversions in Retirement: A Utah Guide for 2026
Pay some tax on your terms now — or let RMDs, Medicare surcharges, and your heirs' tax bill decide later.
The bottom line
- A Roth conversion moves pre-tax IRA or 401(k) money into a Roth IRA — you pay ordinary income tax now so the money grows and comes out tax-free later.
- Roth IRAs have no required minimum distributions for the original owner (IRS), while traditional accounts force taxable withdrawals starting at age 73.
- The idea is to convert in years your tax rate is low — in 2026 the 12% federal bracket tops out at $100,800 of taxable income for a married couple (IRS).
- Watch the side effects: a big conversion can raise Medicare IRMAA premiums two years later and make more of your Social Security taxable.
- This is education, not tax advice — model the numbers with a tax professional before converting.
If you have saved well in a traditional IRA or 401(k), you have a silent partner: the IRS owns a piece of every dollar, and you will settle up when you withdraw it. A Roth conversion is the choice to settle up now, on a year and an amount you pick, instead of later when required minimum distributions, higher tax rates, or your heirs decide for you. For many Utah retirees — especially in the low-income "gap years" between leaving work and starting RMDs — converting a measured amount each year can lower a lifetime tax bill. Here is how it works, the 2026 numbers, and the traps to avoid.
What is a Roth conversion, exactly?
A Roth conversion moves money from a pre-tax account (traditional IRA or 401(k)) into a Roth IRA. You add the converted amount to your taxable income for that year and pay ordinary income tax on it. In exchange, the money then grows tax-free, and qualified withdrawals — after age 59½ and once the five-year rule is met — come out completely tax-free. Per IRS rules, a conversion is treated as a rollover but is still taxable in the year you receive it, and there is no income limit on converting (unlike the income limits on Roth contributions).
Source: IRS, Publication 590-B, "Distributions from IRAs" — irs.gov/publications/p590b.
Why would a Utah retiree convert? Three real reasons
Converting means paying tax sooner, so it only makes sense when it saves more tax over your lifetime than it costs today. Three forces usually drive that math:
Sources: IRS RMD FAQs; IRS 2026 inflation adjustments (IR-2025-103); CMS 2026 Medicare Part B figures. Links in Sources below.
1. Roth IRAs have no required minimum distributions
This is the big one. Traditional IRAs and 401(k)s force you to start taking taxable withdrawals — required minimum distributions (RMDs) — at age 73 (75 if you were born in 1960 or later), whether you need the money or not. A Roth IRA has no RMDs during the original owner's lifetime. Every dollar you convert before 73 is a dollar the IRS can never force you to withdraw, which keeps future taxable income — and everything tied to it — lower.
Source: IRS, "Retirement plan and IRA required minimum distributions FAQs" — irs.gov/retirement-plans/…rmd-faqs.
2. "Filling up" a low tax bracket in the gap years
The years between retiring and age 73 are often your lowest-income years — wages have stopped, RMDs have not started, and you may be delaying Social Security. That is prime conversion territory. In 2026, a married couple's 12% federal bracket runs up to $100,800 of taxable income, and the standard deduction is $32,200 — so a couple could have roughly $133,000 of gross income and still have room to convert at just 12% before spilling into the 22% bracket. Converting "up to the top of a bracket" each year spreads the tax out at low rates.
Source: IRS, "IRS releases tax inflation adjustments for tax year 2026" (IR-2025-103) — irs.gov/newsroom/…tax-year-2026.
Illustrative federal tax on a $50,000 conversion at each marginal rate (2026). A real conversion often spans more than one bracket, and Utah adds its flat 4.5% state tax. Educational only — not tax advice.
3. A tax-free inheritance for the next generation
Money left in a traditional IRA lands on your heirs with a tax bill attached — and most non-spouse heirs must empty an inherited IRA within 10 years, often during their own peak earning years. A Roth IRA passes to heirs income-tax-free. If leaving a legacy is a goal, converting can be as much an estate decision as a tax one.
Traditional IRA vs. Roth IRA: side by side
| Feature | Traditional (pre-tax) IRA / 401(k) | Roth IRA (after conversion) |
|---|---|---|
| Tax when money goes in / converts | No tax now (pre-tax); grows tax-deferred | You pay ordinary income tax on the amount converted, in the conversion year |
| Tax on qualified withdrawals later | Taxed as ordinary income | Tax-free after age 59½ and the 5-year rule is met |
| Lifetime required distributions (RMDs) | Yes — start at age 73 (75 if born 1960 or later) | None for the original owner |
| Counts toward Medicare IRMAA / Social Security taxation | Withdrawals raise MAGI and combined income | Qualified withdrawals do not raise MAGI or combined income |
| For heirs | Heirs owe income tax on withdrawals | Heirs generally inherit the account income-tax-free (but must still draw it down) |
Sources: IRS Publication 590-B and IRS RMD FAQs (links in Sources). Heir rules simplified; see a tax professional for your situation.
The catch: watch Medicare IRMAA and your Social Security tax
Because a conversion adds to your income, it can trip two thresholds that surprise retirees:
Medicare IRMAA. Most people pay the standard 2026 Part B premium of $202.90/month, but higher earners pay an income-related surcharge (IRMAA) on Part B and Part D. In 2026 the first surcharge tier starts above $218,000 MAGI for a married couple ($109,000 single), lifting Part B to $284.10 and climbing to $689.90 at the top. IRMAA looks back two years, so a large 2026 conversion could raise your 2028 premiums. The fix is usually to convert in smaller annual amounts that stay under the next threshold.
Source: CMS / Medicare.gov, 2026 Medicare costs — medicare.gov/basics/costs/medicare-costs.
Social Security taxation. Up to 85% of your Social Security benefits can become taxable once your "combined income" passes federal thresholds. A conversion raises combined income in the conversion year and can pull more of your benefits into tax. The flip side: once money is in a Roth, qualified Roth withdrawals do not count toward that combined-income test — so front-loading conversions can lower the tax on your benefits for the rest of retirement.
Source: Social Security Administration, "Income Taxes and Your Social Security Benefit" — ssa.gov/benefits/retirement/planner/taxes.html.
How Utah taxes a conversion
Utah is one of the states that taxes retirement income, including IRA and 401(k) withdrawals and the taxable portion of a Roth conversion, at its flat 4.5% state income tax rate (2025). Utah's Social Security and retirement tax credits can erase some of that at modest income levels, but a large conversion can raise your income enough to phase those credits out — the Social Security credit begins phasing out above $90,000 of modified AGI for joint filers ($54,000 single). Once the money is in the Roth, Utah does not tax future qualified withdrawals.
Source: Utah State Tax Commission — incometax.utah.gov; credit phase-out under Utah Code §59-10-1042.
We help Utah retirees look at the whole picture — brackets, RMDs, Medicare IRMAA, and Social Security — in plain English, with no pressure. We coordinate with your tax professional.
Talk to a planner →Frequently asked questions
What is a Roth conversion?
A Roth conversion moves money from a pre-tax account — a traditional IRA or 401(k) — into a Roth IRA. You pay ordinary income tax on the amount you convert in the year you do it. After that, the money grows tax-free and qualified withdrawals are tax-free. There is no income limit on doing a conversion.
Do Roth IRAs have required minimum distributions?
No. The IRS does not require minimum distributions from a Roth IRA during the original owner's lifetime. Traditional IRAs and 401(k)s, by contrast, force taxable withdrawals starting at age 73 (75 if you were born in 1960 or later). Converting can shrink those future forced withdrawals.
Will a Roth conversion raise my Medicare premiums?
It can. A conversion is taxable income, so it raises your modified adjusted gross income (MAGI). Medicare's IRMAA surcharge uses your MAGI from two years earlier, so a large 2026 conversion could raise your 2028 Part B and Part D premiums. In 2026, surcharges begin above $218,000 MAGI for a married couple ($109,000 single). Many people convert in smaller amounts to stay under a threshold.
Is there a penalty for converting before age 59½?
There is no 10% early-withdrawal penalty on the conversion itself. But each conversion starts its own five-year clock — if you withdraw the converted amount before five years have passed and before age 59½, a penalty can apply. For most retirees over 59½ who leave the money invested, this is not an issue.
Does Utah tax a Roth conversion?
Yes. Utah taxes IRA and 401(k) withdrawals — including the taxable amount of a Roth conversion — at its flat state income tax rate (4.5% for 2025). Utah's retirement and Social Security tax credits can offset some state tax at modest income levels, but a large conversion can phase those credits out. Once the money is in the Roth, future qualified withdrawals are not taxed by Utah.
Who is a Roth conversion NOT a good fit for?
Conversions rarely help if you expect a much lower tax bracket later, if paying the tax would force you to sell investments at a bad time or use the IRA money itself to pay it, if you will need the converted funds within five years, or if a large conversion would push you into IRMAA or make more of your Social Security taxable. This is educational, not tax advice — run the numbers with a tax professional first.
Sources
- IRS — Publication 590-B, Distributions from IRAs (conversions taxable; 5-year rule): irs.gov/publications/p590b
- IRS — Retirement plan and IRA RMD FAQs (Roth IRAs have no lifetime RMDs; RMD age 73/75): irs.gov/retirement-plans/…rmd-faqs
- IRS — 2026 inflation adjustments, IR-2025-103 (2026 brackets & standard deduction): irs.gov/newsroom/…tax-year-2026
- CMS / Medicare.gov — 2026 Medicare costs and IRMAA: medicare.gov/basics/costs/medicare-costs
- Social Security Administration — taxation of benefits (combined income): ssa.gov/benefits/retirement/planner/taxes.html
- Utah State Tax Commission — Utah income tax: incometax.utah.gov
About this article. Written by the Utah Retirement Income Data Desk and reviewed by Brian Penner, Retirement income & long-term care planner. Educational only — not financial, tax, or legal advice; talk with a qualified tax professional before making a Roth conversion. Utah Retirement Income is a licensed independent insurance agency (NPN 16493717) and is not connected with or endorsed by any government agency or the federal Medicare program. Insurance and annuity guarantees are subject to the claims-paying ability of the issuing company; there are no guaranteed investment returns.