Roth Conversion in Your Layoff Year: Fill the 12% Bracket

The decision: convert $24,000 at 12% now, or pay 24% later

Marcus, single, lives in Phoenix and was laid off from a software job in March 2026. His severance and three months of wages put his gross 2026 income at about $40,000. He has $190,000 sitting in a traditional IRA from an old 401(k) rollover. He expects to land a new role at a similar salary by January, which would put him squarely back in the 24% bracket for 2027.

Here is the question that pays him real money: should he convert part of that traditional IRA to a Roth this year, while his income is depressed, or leave it alone? The answer is yes — and the size of the move is set by exactly one number: the top of his 12% bracket, $48,475 of taxable income for a single filer in 2026.

Marcus’s $40,000 of gross income, minus the 2026 single standard deduction of $15,750, leaves him with roughly $24,250 of taxable income before any conversion. That means he has about $24,225 of headroom inside the 12% bracket ($48,475 − $24,250). He can convert that much from his traditional IRA and the entire converted amount is taxed at just 12% — an additional federal tax of about $2,907.

Wait until 2027, when he’s reemployed and the same dollars convert at the 24% marginal rate, and that $24,225 conversion costs about $5,814 in federal tax. The layoff window cuts the bill in half. The savings — roughly $2,900 on this slice alone — is the prize for acting before December 31.

Why a layoff year is the cheapest year to convert

A Roth conversion is taxed as ordinary income at your marginal rate in the year the money moves. The whole game is converting in years when that marginal rate is low. A mid-year layoff manufactures exactly that condition: wages stop, your annual income collapses, and for a few months you sit in a bracket you may never see again once your career resumes.

The 2026 single brackets that matter here:

The same $24,000 of converted IRA money costs $2,880 at 12% and $5,760 at 24%. That is not a rounding difference — it is the IRS charging you double for the privilege of waiting until you have a paycheck again. Source for the 2026 brackets: IRS Rev. Proc. 2025-32.

The standard deduction quietly widens the window. For 2026 a single filer’s first $15,750 of income is shielded entirely, and the 10% bracket then runs from $11,926 of taxable income down at the bottom. In practice that means a laid-off single filer can have well over $60,000 of gross income — severance, a few months of wages, and unemployment — and still have meaningful room to convert at 12%, because the deduction comes off the top before the brackets even start. The mistake people make is eyeballing gross income against the $48,475 figure; the comparison is taxable income, after the deduction, against $48,475. Run the actual stack or you will either leave room on the table or accidentally spill into 22%.

How to size the conversion: fill, don’t spill

The discipline is “fill the bracket, don’t spill into the next one.” Convert up to the ceiling of your current bracket and stop. One dollar over $48,475 is taxed at 22%, not 12% — still cheaper than the 24% you’d pay later, but the marginal step matters.

Here is the worksheet, in order:

1. Total your taxable income from all 2026 sources — wages earned before the layoff, severance, unemployment benefits (these are taxable federal income), interest, dividends, capital gains, side income.
2. Subtract the standard deduction ($15,750 single, $31,500 MFJ for 2026) or your itemized total, whichever is larger.
3. That number is your taxable income before conversion. For Marcus: $40,000 − $15,750 = $24,250.
4. Subtract from your bracket ceiling. $48,475 − $24,250 = $24,225 of room at 12%.
5. Convert up to that amount by December 31. Leave a small buffer if any income (dividends, a final bonus, UI back-pay) is still uncertain — you cannot undo an over-conversion.

A common refinement: if you also expect to take the 0% long-term capital gains rate (single LTCG 0% bracket runs to $48,350 in 2026), be careful — a Roth conversion is ordinary income that stacks under capital gains and can push your gains out of the 0% rate. Run the two strategies together, not in isolation.

Rolling an old 401(k) before you convert

After separation you have three ways to get traditional dollars into a Roth:

• Roll the old 401(k) to a traditional IRA, then convert. A direct trustee-to-trustee rollover is not a taxable event; only the subsequent Roth conversion is. This is the most flexible route — you can convert any dollar amount, in any year, to size the bracket fill.
• In-plan Roth conversion, if your former employer’s plan allows it post-separation. Less common, and the plan may force all-or-nothing timing.
• Convert an existing traditional IRA directly. If you already hold the money in a traditional IRA (like Marcus), skip the rollover step entirely.

There is no income limit on conversions — that restriction applies to contributions, not conversions (this is what makes the backdoor Roth legal under IRC §408(d)(2)). A laid-off worker in any income range can convert.

The deadline that ends careers in regret: December 31

A Roth conversion must be completed by December 31 to count for that tax year. This trips people up because IRA contributions can be made until the April filing deadline — but conversions cannot. The money has to actually leave the traditional account and land in the Roth within the calendar year.

And under the Tax Cuts and Jobs Act, recharacterization of a conversion is eliminated. Before 2018 you could “undo” a conversion if the market dropped or you mis-sized it. That escape hatch is gone. Once you convert, it is permanent. This is why you fill the bracket conservatively and finalize the number only after you have a clear read on year-end income — ideally in late November or early December.

Practical timing: custodians get swamped in late December. Initiate the conversion request by early December at the latest. A request that sits in a processing queue and settles January 2 counts for the wrong year — and you may already be reemployed by then, back in the 24% bracket, watching the discount evaporate.

What most people miss: the conversion has ripple effects

The bracket math is the easy part. The traps are the second-order effects, and a layoff year is precisely when they bite hardest:

• ACA premium tax credit clawback. If you bought marketplace health coverage after losing employer insurance, your subsidy is based on modified adjusted gross income. A Roth conversion increases MAGI — and a large conversion can shrink or wipe out your premium tax credit, forcing repayment at tax time. Sometimes the lost subsidy exceeds the bracket savings. Model the conversion against your marketplace subsidy before transferring.
• Unemployment is taxable. UI benefits count as ordinary federal income. If Marcus collected, say, $12,000 of unemployment, that eats into his 12% headroom dollar-for-dollar. Include it in step 1 of the worksheet.
• No withholding trap. Don’t have the custodian withhold tax from the conversion if you can pay the tax from outside cash. Withholding from the IRA reduces the amount that lands in the Roth and, if you’re under 59½, the withheld portion is treated as an early distribution subject to the 10% penalty.
• The 5-year clock. Each conversion starts its own 5-year clock. If you’re under 59½ and might need the converted principal back within five years, you’d owe the 10% early-withdrawal penalty on it. For a true emergency cushion, keep that money outside the Roth.

Multi-year laddering: don’t blow it all on one bracket

If your traditional balance is large (Marcus’s is $190,000) and your unemployment stretches across a calendar boundary — laid off in October, reemployed the following March — you may get two low-income years. Spreading conversions across both lets you fill the 12% bracket twice rather than spilling a single huge conversion into the 24% bracket.

Converting $48,450 across two low-income years at 12% costs about $5,814. Cramming the same amount into one year drives part of it into the 22% bracket and raises the bill. The gap between a disciplined two-year ladder and a panic one-year conversion is real money.

The decision lever

The single variable that controls this entire decision is your year-to-date 2026 taxable income versus the $48,475 ceiling of the 12% bracket. If a layoff has pushed you below that line, you are sitting on a discount the IRS will not offer again once you’re back on payroll. Total your income through the worksheet above, find your headroom, convert up to the ceiling by December 31, and pay the tax from outside cash. Do it before the new job starts — the day your income climbs back into the 24% bracket is the day this opportunity closes for good.