Roth Conversions While Still Working: The Semi-Retirement Strategy (2026)

The textbook Roth conversion story involves someone who retired at 62, has zero earned income, and is filling the 22% bracket every year before RMDs hit. But a large share of the pre-retiree population doesn't fit that story. They're 57 consulting three days a week, or 63 still working part-time, or 61 winding down a business.

The question: can you convert while still earning a paycheck? And if so, is it worth it?

The short answers: Yes, you can. And with the right contribution strategy, you can often create more bracket room than you'd expect — even with $75,000–$100,000 in earned income.

What you can convert while working

The ability to do a Roth conversion depends on where the money is sitting, not whether you're employed.

Traditional/rollover IRAs: always available

If you have a traditional IRA or a rollover IRA from an old employer plan, you can convert any amount at any time regardless of employment status or age. There is no work-status requirement for IRA conversions. This is the most common path for working semi-retirees: the old 401(k) from a job they left five years ago, rolled into an IRA and now available to convert.

Active employer 401(k)/403(b)/457(b): the in-service rule at 59½

Money still inside your current employer's plan generally cannot be distributed before you separate from service — with one key exception. Most plans permit in-service withdrawals at or after age 59½.¹ The mechanics:

1. Request an in-service distribution or direct rollover from your plan administrator.
2. If you take a direct rollover to a traditional IRA, no 20% withholding applies and you avoid the 60-day rollover clock.
3. Convert the IRA to Roth immediately or in stages.

One-way door note: Rolling from an active employer plan to a traditional IRA is generally irreversible — you usually can't roll the money back into the plan. Check your Summary Plan Description before moving assets.

The bracket challenge: how working income compresses conversion room

Earned income stacks on top of conversion income in the same year. More income going in means less room before you cross into a higher bracket. Here's the bracket room at different earned income levels for a married couple filing jointly in 2026 (standard deduction, no other income, no 401k contributions yet):

MFJ, 2026 standard deduction $32,200, no contributions modeled. 22% bracket ceiling is $211,400 taxable income; 24% is $403,550. Sources: IRS Rev. Proc. 2025-32.²

Even at $100,000 in earned income, a married couple still has $143,600 of room to convert inside the 22% bracket — before any contributions are made. Working doesn't eliminate the opportunity; it reduces the ceiling. The next section shows how to push that ceiling back up.

Pre-tax contributions: the tool that creates conversion headroom

Every dollar you put into a pre-tax retirement account reduces your AGI by a dollar, which expands your bracket room for conversions by the same dollar. For a working semi-retiree in the 55–65 range, the contribution arsenal is substantial.

Traditional 401(k) / 403(b) / 457(b) deferrals — 2026 limits³

• Base deferral limit: $24,500
• Age 50–59 regular catch-up: +$8,000 → total $32,500
• Ages 60–63 super catch-up (SECURE 2.0 § 109): +$11,250 instead of $8,000 → total $35,750
• Age 64+: back to regular catch-up → $32,500

The 60–63 super catch-up is a narrow window that lasts exactly four years. If you're in that window and still working, not using it is leaving a significant tax lever on the table.

Health Savings Account (HSA) — 2026 limits⁴

If your employer plan qualifies as a High Deductible Health Plan (HDHP), HSA contributions also reduce AGI:

• Self-only coverage: $4,400 (+ $1,000 catch-up if age 55+) = $5,400
• Family coverage: $8,750 (+ $1,000 catch-up if age 55+) = $9,750

Important: Once you enroll in Medicare (typically at 65), you can no longer contribute to an HSA. If you're working past 65 and delaying Medicare via employer coverage, you remain eligible — but check with HR, because even the Medicare Part A enrollment can disqualify you retroactively.

Self-employed / consulting: solo 401(k) and SEP-IRA

If your working income comes from consulting, freelance, or a small business, the deduction potential is even larger. A solo 401(k) allows both an employee deferral (up to $35,750 at ages 60–63) and an employer contribution of up to 25% of net self-employment income — with a combined §415 limit of $72,000 in 2026.³ For a consultant billing $100,000/year, this can reduce AGI by $50,000–$60,000, turning a heavy bracket squeeze into significant conversion opportunity.

Worked example: Linda's semi-retirement conversion plan

Linda is 61, married to Frank (58, fully retired). They file jointly. Linda works part-time as a healthcare consultant at $90,000/year W-2. She has a $1.4M rollover IRA from her last employer and no Roth IRA yet.

Step 1: Maximize pre-tax contributions

• Linda is in the ages 60–63 super catch-up window.
• She contributes $35,750 to her employer 401(k) (max 2026 super catch-up deferral).
• She and Frank each have HSA-eligible HDHP coverage; she contributes $9,750 to her HSA (family coverage + catch-up).
• Total pre-tax deductions: $35,750 + $9,750 = $45,500

Step 2: Calculate AGI and taxable income

• W-2 wages: $90,000
• Less pre-tax contributions: −$45,500
• AGI before conversion: $44,500
• Less MFJ standard deduction: −$32,200
• Taxable income before conversion: $12,300

Step 3: Find the ceiling

• 22% bracket ceiling (taxable income): $211,400 → conversion room = $199,100
• IRMAA check: Neither Linda (61) nor Frank (58) is on Medicare in 2026. No IRMAA concern this year. (2026 income doesn't affect Medicare premiums until 2028, when Linda will be 63 — still one year from Medicare enrollment.)
• ACA subsidy check: Linda has employer health insurance. No ACA cliff applies.

Step 4: Convert to the 22% bracket

Linda converts $199,100 from her rollover IRA to Roth. Total taxable income for the year: $12,300 + $199,100 = $211,400 — exactly at the top of the 22% bracket. Federal tax on the conversion portion: approximately $43,802 (22% × $199,100). She pays this from cash outside the IRA.

The result: $199,100 moved out of a taxable IRA into a tax-free Roth account at a 22% marginal rate. If this money had stayed in the IRA and been distributed via RMDs at age 75 at a 32% marginal rate, the federal tax on that withdrawal would have been roughly $63,712. Estimated lifetime federal tax savings on this one conversion: ~$19,900 — plus decades of tax-free compounding on the converted balance.

Repeating a similar conversion each year while Linda works (and then adjusting the plan when she retires) can meaningfully reduce the IRA balance before RMDs begin at 75.

What changes when you stop working

Once earned income stops, the conversion landscape shifts:

This comparison shows that the working years are not always worse for conversions than the fully retired years. The income floor is higher, but the contribution lever is larger — and for those with employer health coverage, neither the ACA cliff nor IRMAA applies. For some semi-retirees, converting aggressively while still working is the most tax-efficient path.

The case for not waiting

A common instinct is to wait until income drops (at full retirement) and then convert at a lower rate. This logic is correct when the future rate is substantially lower. But consider:

• ACA years (62–64) compress the ceiling. If you retire at 63 and need Marketplace coverage before Medicare, your annual conversion may be capped at $84,600 MAGI (MFJ) to preserve premium tax credits — far less than you could convert while still on employer coverage.
• IRMAA arrives at 65. Medicare enrollment adds a $218,000 MFJ ceiling. If you're currently above that while working but using contributions to convert at 22%, your total annual conversion now is competitive with what you can do post-65.
• SS stacking narrows the window. Once Social Security starts (most people claim between 67 and 70), 85% of benefits become taxable income, permanently reducing your conversion room. The window before SS is the cleanest.
• Compounding starts immediately. A dollar converted in 2026 compounds tax-free in your Roth IRA starting now. Waiting three years to convert after retirement costs three years of growth on that amount inside the taxable IRA.

The math doesn't always favor converting while working. But for those with large rollover IRAs, employer health coverage, and access to the super catch-up, the combination can rival or beat the post-retirement window.

A note on Social Security timing

If you're still working and haven't claimed Social Security, you have a major variable under your control: when SS starts is when the bracket compression begins. Delaying SS to 70 keeps your taxable income lower during the 65–69 window, giving you three to five years of maximum conversion capacity post-retirement (Medicare enrolled, no SS yet). For large IRAs, this combination — SS delay + Medicare-enrolled conversion years — is often the most valuable window in the entire plan.

See: Roth Conversions and Social Security: Managing the 85% Torpedo

Getting the numbers right

The worked example above assumes Linda has employer health insurance and isn't yet subject to IRMAA. Change either variable and the ceiling changes. Add a pension, part-time SS, or a spouse with income and the calculation changes again. This is why most semi-retirees with large IRAs benefit from a multi-year projection model — not a one-year calculator — that accounts for every interaction across federal tax, IRMAA, ACA, state tax, and Social Security.