As you leave federal service, you do not have to choose between keeping every dollar in the Thrift Savings Plan and moving every dollar to an IRA. It depends on what the money needs to do next. Keeping money in the TSP may preserve low costs, a simple investment menu, access to the G Fund, and a valuable early withdrawal rule. Moving part to an IRA may add investment choice, account coordination, and more customized management. A partial rollover can preserve useful TSP features while giving selected dollars a different job.
The decision should begin with the retirement plan, not the rollover form.
Leaving Redstone Does Not Force an Immediate Rollover
For many Redstone Arsenal civilian retirees, the TSP sits beside a FERS monthly benefit and Social Security. Separation from service changes the rules for accessing the TSP, but it does not create a deadline to move an eligible balance.
As of August 2026, current TSP rules allow a separated participant with at least $200 to leave the account in place. A separated participant may also take all or part of the account through a single payment, installment payments, or a combination of available post-employment distribution methods. A partial single payment must generally be at least $1,000. TSP withdrawal information and the current federal TSP withdrawal regulations explain these choices.
That means the real question is not, “TSP or IRA?” It is, “Which features will matter for each part of my retirement savings?”
The Three Choices Are Different
| Choice | What it may preserve or add | Tradeoff to examine |
|---|---|---|
| Keep the TSP | TSP expenses, the core fund menu, the G Fund, one familiar account, and TSP withdrawal rules | Fewer investment and service choices than are available across the IRA market |
| Roll part to an IRA | Selected IRA flexibility while retaining access to chosen TSP features | Two accounts to coordinate, two fee structures, and more moving parts |
| Roll the full eligible balance to an IRA | One outside account with a broader range of possible investments and service models | Loss of TSP-specific features and possible exposure to higher account, fund, or advisory costs |
None of these choices is automatically better. The useful comparison is specific and measurable.
What the TSP May Still Do Well After Retirement
Low Costs
The TSP reports administrative and investment expenses for its funds on its expenses and fees page. An IRA can also be inexpensive, particularly when it uses low-cost funds without an ongoing management service. It can also cost more once account fees, fund expenses, trading costs, and advisory fees are added.
Compare the total annual cost in both percentage and dollar terms. The IRA comparison should include every layer of cost, not just the expense ratio of the underlying funds.
Access to the G Fund
The G Fund is available only inside the TSP and invests in special U.S. Treasury securities. A retiree who uses the G Fund for near-term withdrawals or as part of a broader allocation would be giving up that specific holding on dollars moved out of the TSP.
That does not mean the G Fund belongs in every plan. It means its intended job should be identified before the account is closed.
A Potentially Important Rule Before Age 59½
The tax rules distinguish between distributions from an employer plan and distributions from an IRA. Under IRS guidance current in 2026, the 10% additional tax may not apply to distributions from a qualified employer plan after separation from service during or after the calendar year in which the employee reaches age 55. That particular exception generally does not follow the money into an IRA. IRS Topic No. 558 lists the employer plan exceptions.
For a federal employee retiring between ages 55 and 59½, this difference deserves separate review before any rollover. Other exceptions may apply, but they have their own requirements.
Simplicity
The TSP core menu is limited by design. That can be a constraint for some retirees and a useful discipline for others. More choices do not automatically produce a better retirement allocation. They create more decisions, and sometimes more cost.
What an IRA May Add
An IRA can offer a broader investment menu, a choice of custodians, and different service models. It may also make it easier to coordinate several old workplace plans under one investment and withdrawal process.
Those advantages depend on the actual IRA. “More flexible” is not enough. The proposed IRA should be compared with the TSP in writing on:
- Total annual fees in dollars and percentages
- The investments that would be used and why they are needed
- Who will manage the account and how that person or firm is paid
- Withdrawal processing and tax withholding options
- Beneficiary administration and how it fits the estate plan
- The level of planning, reporting, and service that comes with the cost
An IRA rollover should solve a named planning problem. A longer investment list by itself is not a planning problem.
When a Partial Rollover May Be Worth Examining
A partial rollover can separate jobs. Dollars retained in the TSP may continue to provide access to TSP-specific features, while dollars moved to an IRA may be coordinated with other accounts under a broader allocation or distribution plan.
The tradeoff is added administration. The retiree now has two accounts, separate beneficiary records, separate statements, and potentially separate required minimum distribution calculations. The split should have a reason that can be stated plainly.
Before choosing an amount, map the expected withdrawals for the years between retirement and Social Security, pension commencement, Medicare, or required minimum distributions. This sequencing work often reveals whether a partial rollover would serve a purpose or merely divide the account.
Handle the Tax Mechanics Carefully
A rollover and a withdrawal are not the same transaction.
For eligible pre-tax money, a direct rollover from the TSP to a traditional IRA generally continues tax deferral. A move from pre-tax TSP money to a Roth IRA is generally a taxable conversion. Roth TSP money has separate rollover and five-year period considerations that should be checked before execution.
The IRS rollover guidance, current in 2026, explains why the payment method matters:
A direct rollover sends eligible money to the receiving IRA without mandatory federal tax withholding.
If an eligible retirement plan distribution is paid to the participant, the plan generally withholds 20%.
The participant generally has 60 days to complete an indirect rollover and must replace the withheld amount from other funds to roll over the full distribution.
A required minimum distribution is not eligible for rollover.
Traditional IRAs and employer retirement plans are generally subject to required minimum distributions beginning at the applicable required beginning age. Roth IRAs and designated Roth plan accounts are not subject to lifetime required minimum distributions for the original owner under 2026 law. The IRS required minimum distribution page provides the current rules.
Tax treatment can change with the source of the money, the destination account, age, timing, and prior Roth history. A CPA should review any transaction that includes a Roth conversion, after-tax basis, an outstanding TSP loan, or a required minimum distribution.
Questions to Answer Before Signing Rollover Paperwork
- Will any of this money be needed before age 59½?
- What TSP features would be lost on the amount moved?
- What specific IRA capability is needed that the TSP does not provide?
- What is the complete annual cost of each choice in dollars?
- How will withdrawals coordinate with the FERS monthly benefit, Social Security, and taxable savings?
- Are the traditional and Roth balances being sent to the correct account types?
- Have the beneficiary designations been reviewed across both accounts?
- Is the person recommending the rollover paid differently if the money moves?
A Practical Way to Frame the Decision
Keeping the TSP may fit when its costs, G Fund access, early distribution rules, and simple structure remain useful. A partial rollover may fit when an IRA solves a defined planning need and selected TSP features still matter. A full rollover deserves the clearest comparison because every TSP-specific feature is being exchanged for the IRA's investments, services, and costs.
For Redstone Arsenal retirees, the rollover is one part of a larger transition. The better analysis coordinates the TSP with the FERS monthly benefit, Social Security, taxes, healthcare, near-term cash needs, and the surviving spouse's plan. The account location matters. The job assigned to the money matters more.
Sources Reviewed
- Thrift Savings Plan: Leaving the Federal Government
- Thrift Savings Plan: Withdrawals in Retirement
- Thrift Savings Plan: Expenses and Fees
- Thrift Savings Plan: G Fund
- IRS: Rollovers of Retirement Plan and IRA Distributions
- IRS Topic No. 558: Additional Tax on Early Distributions from Retirement Plans Other Than IRAs
- IRS: Required Minimum Distributions
Questions About Your TSP or Federal Retirement?
We work with Redstone Arsenal and other federal retirees to coordinate TSP decisions with FERS, Social Security, and a complete income plan. Schedule a free Discovery Session to see how the pieces fit together.
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