A reader asks:
When you’re in the Blended Retirement System, does it make sense to convert the traditional TSP’s agency & matching contributions to the Roth TSP?
It looks like an interesting new feature with the 2026 changes to the Thrift Savings Plan.
The Short Answers:
Yes, if you’re below the ranks of O-4 or E-7– even if you’re getting sea pay, submarine pay, flight pay, or other specialty pays.
“Probably” if you’re at or above those ranks.
The Long Answer (2500 more words):
Starting in January 2026, military servicemembers will be able to convert most of their traditional TSP balance into their Roth TSP. It’s a great way to accelerate your financial independence.
The Federal Retirement Thrift Investment Board has been discussing in-service conversions for most of 2025,and the implementation announcement was finally released in November.
Is an in-service conversion worth the effort? Well, it’s a highly individual decision— but it’s a great idea if you already have a small tax bill. Read the discussions below and then check your math.
Active-duty Military Families Have Low Income Taxes
The biggest issue is figuring out whether you have a small tax bill. Military families find this hard to believe: their total compensation is taxed less than civilian families.
Yeah, I was skeptical when I learned this, but keep reading.
As you’re already keenly aware, military compensation is lower than the equivalent civilian occupation, so it starts with a lower tax burden. In addition, only military pay is taxed— not allowances for housing & food. Other benefits (part of total military compensation) aren’t taxed either.
It gets better than lower tax rates on lower pay: junior military families are frequently eligible for tax credits like the Earned Income Tax Credit and child tax credits. They might pay very little in federal taxes.
And finally, if you’re a resident of a state that doesn’t tax your military pay, then your total tax bill is even lower.
When you’re in the earlier stages of a military career, you’re probably paying the lowest income taxes of your entire life. (I’m 65 years old. You don’t have to ask me how I’ve learned that.) If you’re in the 10%-12% federal income-tax bracket (and especially if you have tax credits) then you have plenty of room for small annual in-service Roth TSP conversions. Even if you’re in the 22% bracket, those tax credits might still give you some room for conversions before you actually have to pay tax on dollars earned at the 22% rate.
Those small tactics have big impacts. Do it while you’re younger (and paying lower income taxes). Later in life, compounding can sneak up on you.
The Exponential Growth Of Compounding
We humans suck at estimating exponential growth. In the first 10-15 years of saving & investing, that growth looks linear. It can even feel frustratingly slow & boring! It takes a long time for the exponential part to become apparent, but once it starts then it moves more quickly every year. By the 20th year, that linear growth slopes upward even more sharply and goes hyperbolic… in a very good way.
Exponential growth means that money in your traditional retirement accounts can compound later in life to create what one accountant calls a “time bomb.”
You might have been in the 10%-12% income-tax brackets when you first contributed that money to your retirement accounts, but when you finally have to start withdrawing some in your 70s, it could be taxed in the 22% bracket— or even higher.
“I’ll Do Roth Conversions When I Reach Financial Independence!”
I hear that a lot. We already know that military families with a high savings rate can reach FI in their 30s or 40s even without a military pension. After that you’d stop working for money and you’d still have plenty of time to tackle those Roth conversions in your TSP and IRAs, right?
Here’s the thing: very few of us veterans stop earning money after the military. Even if we retire with a pension, we still transition to bridge careers in overwhelmingly high numbers.
Vets can personify excellence without arrogance. We have tremendous human capital, and we have the soft skills that employers want. We’ve seen some stuff, we know how to get more stuff done, and we’re coachable. Once we’ve been trained in a new career and gain experience, we can earn that serious money we’ve always heard about.
Our bridge-career income pushes us up into the 22% federal income-tax brackets right away— maybe even 24%— and we no longer have those untaxed military allowances or any tax credits. Even worse, our state might not tax military pay or pensions, but they’ll happily tax our earned income.
When we deal with those higher taxes, it’s tempting to put even more deductible contributions into traditional retirement accounts— and our existing military traditional TSP balance keeps compounding away the entire time.
I’ve watched this for over 40 years. Workers in their 50s and 60s with large balances in traditional retirement accounts are contemplating Roth IRA conversions in the 22% federal income-tax bracket. Retirees in their 60s & 70s can have enough gains in their retirement accounts to consider pushing their conversions into the 24% income-tax bracket. It’s a perpetual topic in the Millionaire Money Mentors forum.
If you can do in-service Roth TSP conversions in the 10%-12% income-tax bracket (especially if you have tax credits) then get it done now.
“Is The Tax Savings Worth The Effort?”
Here’s another big concern of military families: tapping their retirement accounts before age 59.5 penalty-free withdrawals.
As you approach the end of your active duty (in your 30s and 40s), you might feel that you have “too much” of your assets locked up in retirement accounts. There are plenty of ways to access those accounts without penalties (although with some income taxes), but in-service conversions make this even easier.
When you separate from the military, you can roll over your TSP accounts into your IRAs. (Your traditional TSP can be rolled into your traditional IRA without any tax impacts, and your Roth TSP can be rolled into your Roth IRA.) You could start converting your traditional IRA (with its traditional TSP balance) into a Roth IRA, but the Roth IRA conversion ladder still requires the conversion amount to be left untouched for five tax years.
The Roth TSP, though, offers more options.
When you roll your Roth TSP over to your Roth IRA, if you’ve already had a Roth IRA for at least five tax years: you can immediately withdraw your Roth TSP contributions (but not the growth!) from your Roth IRA—tax-free and penalty-free. (You should check your account parameters with a fee-only fiduciary financial advisor, and that link has the references for the tax code.) If you’re concerned about bridging the gap to age 59.5, having your TSP contributions in the Roth TSP gives you a lot more flexibility.
Of course it’s better to leave that money in your retirement accounts to keep compounding for your… retirement. Future You will someday be very grateful that Today You didn’t spend that money on consumerism. However if you’re already on track for financial independence, then the additional flexibility of Roth TSP contributions in your Roth IRA can smooth over a lot of life’s speed bumps.
Even if you make it to age 59.5 without touching your retirement accounts, those in-service conversions of your traditional TSP to your Roth TSP mean you never have to worry about Required Minimum Distributions.
Best of all, your heirs don’t have to pay taxes on an inherited Roth TSP.
Impacts Of The Blended Retirement System
The Roth TSP began rolling out in 2012 and the BRS started in 2018. We now have three broad groups of military families:
- Junior ranks (<8 years) in the BRS with a smaller traditional TSP balance,
- Senior ranks in the BRS with a mix of traditional TSP + Roth TSP balances, and
- Senior ranks (not in the BRS) with a big traditional TSP balance.
Thanks to the military’s up-or-out promotion & retention systems, the junior ranks are by far the largest group. Even with waiting two years for the Dept of Defense’s BRS matching contributions, that traditional TSP is compounding during one of America’s greatest bull markets.
The TSP in-service conversion program requires a minimum amount of $500. If that’s in the 12% federal income-tax bracket then you’d pay $60 on each $500 conversion. If you push into the 22% bracket then it’d be $110.
From then on, you’d never pay (more) taxes on the growth and you’d never have to worry about RMDs.
If you’re in the second or third senior groups (either in the BRS or still in the legacy High Three pension system) then the math is more complicated. It doesn’t take much of a conversion to push you into the 24% income-tax bracket, and it might look like a painful choice.
What does your senior-rank future look like? When you leave active duty, will you have a (taxable) military pension? Will you start a bridge career and already be in the 24% income-tax bracket? (Contact me if you end up in the 32% income-tax bracket— we’ll have an entirely different “problem” to solve.) If you earn income into your 50s or even your 60s, will you have enough years left in lower income-tax brackets for Roth IRA conversions?
As painful as it might seem above E-6 or O-4 (especially with bonus contracts and specialty pay), it might make sense to do in-service Roth TSP conversions in the 22% bracket now.
“But Wait, There’s More! — In Your Roth TSP”
It’s not just the effect of paying some taxes now to avoid more taxes later. It’s not just the benefits of untaxed future growth with no Required Minimum Distributions. It’s not even the convenience of tapping your Roth TSP contributions before age 59.5.
While you’re in uniform, is there a possibility that you’ll earn some Combat Zone Tax-Exempt pay?
Let me be clear: CZTE pay is a horrible reason to deploy to a combat zone. Yet if you have to go to a combat zone anyway, you can jumpstart your path to financial independence.
We milbloggers have been writing about this ever since 2002, when servicemembers could start contributing to TSP accounts. It’s more tax-efficient to put CZTE pay in your Roth TSP, but that account has a lower contribution limit.
That tactic became even more mind-numbingly complicated when BRS servicemembers could inadvertently maximize their Roth TSP contributions too early in the year (“front-loading”) and lock themselves out of the DoD BRS match for the rest of the year.
Worst of all: what if you wanted to sign up for Continuation Pay or tack on a bonus contract in the combat zone, and put that tax-exempt money into your TSP?
The TSP’s annual additions limit gives you more room in the traditional TSP (not in the Roth TSP) but before in-service conversions you would eventually have to figure out how to handle a Roth IRA conversion of that bigger traditional TSP account.
Now you can stuff much more money into your traditional TSP ($72K in 2026) and simply do an in-service Roth TSP conversion.
While you’re in a combat zone, your taxable income for the year is going to be much lower. At the same time you’re stuffing CZTE pay into your traditional TSP from your pay deductions, you can also do more in-service Roth TSP conversions with your lower income-tax bracket.
Here’s a CZTE conversion example straight from the TSP’s website:
“For uniformed services members with tax-exempt contributions:
If your traditional balance includes a nontaxable amount, such as tax-exempt contributions from serving in a combat zone, your conversion amount will include a nontaxable amount in the same proportion as taxable and nontaxable amounts in your traditional balance. For example, if your traditional balance is $100,000 with a $10,000 nontaxable amount, then 10% of your traditional balance is nontaxable. If you convert $10,000 to your Roth TSP balance, then $9,000 of the conversion amount would be from the taxable portion and $1,000 would be from the nontaxable portion.”
What About A Military Pension?
Here’s a few insights paraphrased from a discussion with Air Force vet & CFP Cole Ferrier, who advises clients at EnoughFP.com.
“Military retirees should recognize that probably for the rest of their life, the pension will fill most of the income-tax standard deduction and maybe even more. This means (while you’re still on active duty) it will almost always be a no brainer to contribute to the Roth TSP or convert to the Roth TSP in the 10%/12% tax brackets.
Military retirees don’t have to deal with the Affordable Care Act either, which means they don’t have to worry about their earned income affecting their premium subsidies.
Military families will have to ask themselves if they’ll earn an income after retiring from the military. If so, then on active duty they should consider contributing to the Roth TSP up into the 22% bracket.
If military retirees aren’t going to work after their service (because they have enough income from their military pension & VA disability compensation), then the 22% bracket might be too high.”
I’ll add my usual personal quality-of-life disclaimer to Cole’s excellent financial advice: don’t gut it out to 20 just for the active-duty military pension.
Military families have tremendous human capital and can reach financial independence (on a high savings rate) even without a military pension. When active duty stops feeling challenging & fulfilling, then it’s time to head for the Reserves or National Guard.
What About That Affordable Care Act?
Only 15% of military servicemembers reach 20 years for any sort of pension (and cheap Tricare health insurance).
That’s only one out of six people. As you used to hear during recruit training: look to your left, look to your right, and over the next two decades you’ll lose at least two people on each side of you.
What about the other 85%? If you don’t have health insurance through the Reserves/Guard or from a civilian employer, then what about those ACA premium subsidies?
Here’s more advice from CFP Cole Ferrier:
“If military families separate for a civilian career in a high-paying job, then consider Roth TSP contributions (in uniform) at whatever income-tax rates are lower than that future career. (Nords opinion: as high as 22%.) Later, in that private sector job, they can stuff their contributions into deductible traditional retirement accounts.
This will give them their military Roth TSP contributions to spend if they still end up retiring early. [Spending those Roth TSP contributions instead of shares from taxable accounts] will help reduce their taxable income on the ACA front and maintain their eligibility for premium subsidies.”
See also Cole’s blog post on the ACA cliff.
If vets without military pensions are going to reach financial independence before being eligible for Medicare (age 65), and they’re going to give up employer health insurance, then consider doing Roth IRA conversions up to the limits of the ACA subsidy cliff.
Call To Action (Whew.)
If you’re below the rank of O-4 or E-7, then I strongly recommend contributing to your Roth TSP. In addition, start doing in-service conversions of your traditional TSP to your Roth TSP.
Once you reach O-4 or E-7, do the math. It might still make sense contributing to the Roth TSP (up to the 22% federal income-tax bracket) and continuing to do in-service conversions. This math is especially compelling if you expect to leave the military without a pension (just like 85% of military families).
If you’re in a combat zone, then your Combat Zone Tax-Exempt pay means that your income taxes are the lowest you’ll ever see. Contribute your CZTE pay to your traditional TSP (up to the annual additions limit) and aggressively do in-service conversions up to the 22% income-tax bracket.
When you’re a military vet (but no military pension or Tricare) and if your family will be buying health insurance on the Affordable Care Act, then read CFP Cole Ferrier’s post on the impact of your income on the subsidy cliff. I strongly suggest consulting a health-insurance broker to navigate this gantlet.
There are no affiliate links or paid ads in this post. Try your military base library or local public library before you pay money for these books– in any format.
Military Financial Independence on Amazon:
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Raising Your Money-Savvy Family on Amazon:
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Related articles:
Reasons To Keep Your TSP Account (Or NOT)
“Should I Invest In The Thrift Savings Plan Or In Taxable Accounts?”
“Our Retirement: The Spending Smile Of Financial Independence”
Early Withdrawals From Your TSP and IRA After The Military
How to Maximize TSP Contributions in a Combat Zone
Transitioning from Active Duty to Reserves Or National Guard



























