Can I convert my TSP to Roth after separating from the military?

Yes, two ways. Since January 2026, separated participants can do Roth in-plan conversions inside TSP, minimum $500 per request, up to 26 per year, irreversible, with no tax withheld from the converted amount. Or you can roll your Traditional TSP to a Traditional IRA and convert from there. Either way the converted amount is ordinary income in the conversion year.

How much can I convert without leaving the 12% bracket?

With no other taxable income, a single filer in 2026 can convert up to $66,500 in one year before touching the 22% bracket: the $16,100 standard deduction plus the $50,400 top of the 12% bracket. Moderate balances spread over 2 to 3 school years can stay entirely inside the 10% bracket.

Does a Roth conversion affect Medicaid or ACA subsidies?

Yes, and this is the big trap for student veterans. Conversions count as ACA MAGI even though GI Bill income does not. In a Medicaid-expansion state, converting past 138% of the federal poverty line ($21,597 for a single person in 2026) can cost you Medicaid eligibility. Size your conversion against that threshold or budget for marketplace coverage first.

Does the 5-year rule matter for a young veteran?

Rarely. Each conversion carries a 5-year clock that only matters if you withdraw the converted principal early. If the money stays invested until 59½, the clock is irrelevant. One tip: open a Roth IRA in the same year you first convert, since the account-level 5-year clock for tax-free earnings starts then.

Can I contribute new money to a Roth IRA on GI Bill income alone?

No. GI Bill payments are not earned income, and conversions are not either. New Roth IRA contributions require wages. Even part-time work unlocks contributions and possibly the Saver's Credit, which applies to new contributions but never to conversions.

GI Bill Years: The Cheapest Roth Conversion Window

Q: Is GI Bill income taxable?

No. Per IRS Publication 970, all VA education payments, including the monthly housing allowance, tuition payments, and book stipends, are tax-free and do not appear on your federal return. That is exactly why your GI Bill school years can be near-zero taxable income years.

Last Updated: August 9, 2026 Reading Time: 8 min

A veteran in an online money forum shared the math last week: converting his Traditional TSP to Roth during GI Bill school years cost him an effective 10 to 12 percent instead of the 22 percent he'd have paid on an officer's salary, saving about $7,000. He's right, and the window is bigger than most separating service members realize. If your only income is the GI Bill, you are sitting in the cheapest Roth conversion window of your entire life.

GI Bill benefits, including the housing allowance, are completely tax-free per IRS Publication 970. A full-time student veteran with no job income has $0 in taxable income, which means the entire standard deduction and the bottom brackets sit empty.
A separated E-5 converting $25,000 a year for three school years pays $2,670 total tax on $75,000 converted, a 3.56% effective rate. Converting the same $75,000 later as a GS-11 costs $16,500 at the 22% marginal rate. Savings: $13,830.
Since January 2026, TSP allows in-plan Roth conversions for separated participants: $500 minimum, up to 26 per year, irreversible, no withholding taken from the converted amount.
The two traps: conversions count toward ACA/Medicaid MAGI (the Medicaid cliff sits at $21,597 for a single filer in 2026), and GI Bill income can't support new Roth IRA contributions, only conversions.

Why School Years Beat Even Deployment Years

You may have heard of converting during a combat-zone deployment, when CZTE excludes your pay, or during the early-career years when an officer's allowances hold taxable income down. Both work, and we've covered them in our deployment Roth conversion window and officer tax window guides.

The GI Bill window is different in one clean way: there is no military paycheck at all. Deployment strategies exclude income you're still earning. A full-time student veteran simply has none, unless they choose to work. The monthly housing allowance (around $2,522 a month for many schools) pays the bills, and the IRS never sees it. Every dollar of standard deduction and every dollar of the 10 and 12 percent brackets is available for conversions.

The Math: What a 3-Year Roth Conversion Ladder Costs

Take a separated E-5, age 23, with $60,000 to $75,000 in Traditional TSP, enrolled full-time for three years. Single filer, 2026 rules: $16,100 standard deduction, 10% bracket to $12,400 of taxable income, 12% to $50,400.

Convert $25,000 each school year:

Year	Converted	Minus standard deduction	Taxable	Tax	Effective rate
1	$25,000	$16,100	$8,900	$890	3.56%
2	$25,000	$16,100	$8,900	$890	3.56%
3	$25,000	$16,100	$8,900	$890	3.56%
Total	$75,000			$2,670	3.56%

Every converted dollar lands entirely in the 10% bracket. A more conservative $20,000-a-year ladder drops the total tax to $1,170, a 1.95% effective rate.

The comparison that matters: wait until you've started a federal civilian career at GS-11 and convert the same $75,000, and every dollar stacks on top of your salary at the 22% marginal rate: $16,500. The school-year ladder saves $13,830 on the identical balance. That money then grows tax-free for the next 35-plus years.

FedTools 2026 analysis using IRS 2026 single-filer brackets and the 2026 standard deduction. State income tax not modeled; a no-income-tax state widens the gap further.

How to Actually Execute It

Path 1: convert inside TSP. Since January 2026, separated participants with a TSP account can do Roth in-plan conversions from My Account on tsp.gov. The rules that matter: $500 minimum per request, up to 26 requests a year, conversions are irreversible, and amounts pull proportionally from all your traditional money, including agency match. If part of your balance came from combat-zone contributions, that tax-exempt basis converts tax-free; only its earnings are taxable.

One mechanic matters more than the rest: TSP does not withhold tax from the conversion, and that works in your favor. Pay the tax bill from outside cash so the full converted amount stays invested, and plan for the payment at filing time (or make a quarterly estimated payment if the amount is large).

Path 2: roll to an IRA, then convert. Roll the Traditional TSP to a Traditional IRA and convert on your own schedule. You give up TSP's ultra-low expense ratios and the G Fund, but gain fund flexibility. For most student veterans, the in-plan route is simpler and keeps costs near zero.

Either way, the converted amount shows up on a 1099-R as ordinary income for that year, which is the whole point: you're choosing the year your rate is lowest.

The Two Traps to Check Before Converting

The Medicaid/ACA cliff. Your GI Bill money is invisible to the IRS, but your conversion is not, and it counts toward ACA MAGI. In a Medicaid-expansion state, a single person loses Medicaid eligibility above 138% of the poverty line, $21,597 in 2026. A $25,000 conversion blows through that line. If Medicaid is your health coverage, either size conversions below the threshold or price a marketplace plan against the tax savings before you execute. Veterans using VA health care don't face this constraint the same way.

No new Roth contributions on GI Bill income. Conversions and MHA are not earned income. Without wages, you cannot make new Roth IRA contributions, and the Saver's Credit (worth up to 50% of contributions at low AGI) never applies to conversions. A part-time job changes both answers, and its income barely dents the bracket math above.

Timing a Roth Conversion Inside the School Year

Two timing details help at the margins. First, conversions count in the calendar year they execute, not the school year, so a veteran who starts classes in August has a stub year with only a few months of any prior wages. If you worked at a taxable job through July, your first clean full conversion year is the next January. Running the bracket math on each calendar year separately keeps a partial-year paycheck from pushing conversion dollars into the 22 percent bracket. Second, converting early in the year buys more tax-free growth time but risks a surprise if you land a mid-year job; converting in December, once your year's income is known, makes the Roth conversion amount precise at the cost of a few months of growth. For most student veterans, the December approach wins on certainty.

Who Should Think Twice

The window isn't automatic. If your Traditional balance is small, converting later in a low-income year may work out similarly. If you expect to need the converted principal within five years, each conversion's 5-year clock can impose a 10% penalty on early withdrawal of that principal. And if you're converting a large balance in one year to "get it done," check what that does to the bracket math; spreading across all your school years is usually the whole advantage.

Model What the Converted Balance Becomes

A $75,000 Roth balance at 23 is the seed of a large tax-free number at 60. Use the free TSP Calculator to project it at your contribution rate, and see our in-plan conversion guide for the mechanics in detail.

Frequently Asked Questions

Is GI Bill income taxable?

No. IRS Publication 970 makes all VA education benefits tax-free, housing allowance included. None of it appears on your return.

Can I convert my TSP to Roth after separating?

Yes: in-plan conversions inside TSP (available to separated participants since January 2026) or by rolling to an IRA and converting there. Converted amounts are ordinary income in the year converted.

How much can I convert and stay in the 12% bracket?

Up to $66,500 in a year with no other income: the $16,100 standard deduction plus the $50,400 12%-bracket ceiling. Staying inside the 10% bracket means about $28,500 a year.

Does a conversion affect Medicaid or ACA subsidies?

Yes. Conversions count as MAGI. The 2026 Medicaid-expansion cliff for a single person is $21,597. Check your coverage situation before converting past it.

Does the 5-year rule matter here?

Only if you might withdraw converted principal early. Money left until 59½ never meets the rule. Open a Roth IRA the same year you first convert to start the account-level clock.

Can I make new Roth IRA contributions on GI Bill income?

No, new contributions require earned income. A part-time job unlocks them, plus potential Saver's Credit on the contributions.

The Deployment Roth Conversion Window: The CZTE version of this strategy while serving
The Officer Roth Tax Window: The stateside early-career version
TSP Roth In-Plan Conversion Guide: Full mechanics, forms, and timing
GI Bill MHA August 2026 Reset: What the housing allowance pays this school year

Sources: IRS Publication 970, VA education benefits and taxes, TSP.gov Roth in-plan conversions, IRS 2026 inflation adjustments.