Traditional TSP to a Roth IRA vs. In-Plan Conversions: Fact Sheet
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Traditional TSP to a Roth IRA vs. In-Plan Conversions: Fact Sheet

Traditional TSP account to Roth IRA or in-plan Roth conversions: Understand tax implications, TSP rollover information, Roth TSP vs. Roth IRA, and 2026 Contribution Limits for Thrift Savings Plan

Traditional TSP to a Roth IRA vs. In-Plan Roth TSP Conversions and Tax Consequences to Consider

This article provides information regarding TSP and Roth conversions, both conversions with an IRA and the new in-plan option that will be available in the upcoming year. We’ll also review the differences between traditional TSP and IRAs and Roth TSP accounts and IRAs. We’ll also take a look at some other key changes coming to the Thrift Savings Plan in 2026, including updated contribution limits and the new rules surrounding catch-up contributions. Last, we’ll answer important questions for federal employees close to retiring and thinking about rolling money out of their TSP, including “What should pre-retirees know about partial versus full TSP withdrawals?

Roth Thrift Savings Plan and Conversion Information

Starting in January 2026, the TSP plan will introduce an in‑plan Roth conversion option, allowing participants to move money from their traditional (pre‑tax) TSP balance directly into a Roth, after-tax, balance without leaving the plan. But just because you can convert funds in-plan, does that mean you should? – click here to discuss your personal situation with a fed-expert fiduciary retirement planner for federal employees. 

The Roth TSP works differently from the traditional TSP: contributions are taxed up front, but qualified withdrawals in retirement are tax‑free. Before 2026, federal employees who want to convert traditional TSP funds have to roll the money to a traditional IRA and then convert to a Roth IRA outside the plan, triggering taxable income in the year of conversion. With the new in‑plan Roth conversion, participants can shift funds internally, simplifying the process while still owing income tax on the converted amount. Taxes must be paid from funds from another source, personal funds not from the TSP itself, and the decision is irrevocable once processed. 

Importance of Understanding Conversions and IRAs

A Roth IRA offers tax-free withdrawals in retirement, but to benefit from this with TSP funds, TSP participants must first understand the process of transferring or rolling over their TSP into an IRA and potentially converting it to a Roth IRA. This decision should be made with a clear understanding of the tax consequences. Before you roll your TSP account to a Roth IRA or a pre-tax IRA, having a financial planner you trust is crucial to avoid unintended errors, investment losses, and a possible hefty tax bill. 

 

Understanding Roth Conversions and the Tax Implications

A Roth conversion involves transferring money from a pre-tax retirement account, such as a traditional IRA or a traditional TSP, into a Roth IRA. The key feature of a Roth IRA is that qualified withdrawals in retirement are tax-free. However, when you convert from a traditional TSP to a Roth IRA, the amount you convert becomes taxable income for the year in which the conversion occurs.

Direct Rollover vs. Indirect Rollover for Converting TSP Funds to Roth Account

Here’s how transferring funds from a traditional TSP to a traditional IRA typically works, often as the initial step before a Roth conversion. This transfer, also known as a TSP rollover, can be accomplished in a couple of ways. Here are differences between direct and indirect rollovers. 

  1. A direct rollover, where the TSP directly sends the funds to your traditional IRA account.
  2. An indirect rollover, where you receive a check and have to deposit the money into another retirement account within 60 days.

Converting Traditional IRA to Roth IRA

After transferring money from the TSP to a traditional IRA, the next step to eventually get it into a Roth IRA is to convert the traditional IRA to a Roth IRA. This is the crucial step where you pay taxes on the amount converted. The converted amount becomes part of your taxable income for the year, and you will owe income tax at your income tax rate. Once the money is in the Roth IRA, it can grow tax-free, and withdrawals in retirement are also tax-free and not subject to required minimum distributions (RMDs). 

Differences Between Thrift Savings Plan Accounts and IRAs

The TSP is a workplace retirement account designed specifically for federal employees and service members, while an Individual Retirement Account (IRA) is a personal account anyone can open. The TSP offers higher contribution limits and agency matching, but with a limited menu of low‑cost index funds and a restrictive Mutual Fund Window that provides access to other types of investments. The money in traditional IRAs, by contrast, is subject to lower contribution limits but allow far more investment choices and tax strategies. Many federal employees benefit from using both: the TSP for its match and simplicity, and an IRA for added flexibility and control over retirement income planning, transferring pre-tax TSP to a traditional IRA and Roth TSP funds to a Roth IRA. Converting funds should only be performed if you are expecting to be in a higher tax bracket in the bulk of your retirement years. 

Check out these Free Federal Retirement Planning Calculators, Tools, and Resources

Traditional TSP vs. Roth TSP

Here’s a breakdown of the key tax differences between traditional and Roth TSP accounts:

  • With a traditional TSP, contributions are made pre-tax, but withdrawals in retirement are taxed.
  • In contrast, a Roth TSP involves paying taxes on contributions upfront, allowing for tax-free qualified withdrawals during retirement. 

Roth TSP vs. Roth IRA

Here are some important distinctions between the Roth TSP and Roth IRA. Specifically:

  • A Roth TSP is exclusively for federal employees.
  • A Roth IRA is type of IRA accessible to anyone meeting specific income criteria.

One of the biggest differences between a Roth TSP and a Roth IRA is the income limits. While a Roth TSP has no income limits, a Roth IRA does. If your income is too high, you will not be able to contribute to a Roth IRA directly. However, there is a workaround often referred to as the “backdoor Roth conversion,” which involves contributing to a traditional IRA and then converting it to a Roth IRA.

Upcoming Changes to Thrift Savings Plan

Starting in 2026, the TSP will allow in-plan Roth conversions as discussed above. There are also a few other changes to keep in mind if you use either of the two types of TSP accounts to save for retirement. 

Updated TSP Contribution Limits for Retirement Funds

The IRS has raised the 2026 TSP contribution limit to $24,500, with catch-up contributions increasing to $8,000 for those 50+, and up to $11,250 for those aged 60 to 63. That’s a potential $35,750 in tax-advantaged retirement savings.

Catch-Up Contributions to Roth Balance Rules

One of the upcoming changes to the Thrift Savings Plan revolves around catch-up contributions. Starting in 2026, federal employees must know that the ability to make catch-up contributions will be affected by their income. If your income exceeds $150,000 in 2025, there are specific rules regarding where those catch-up contributions must go. These rules aim to guide pre-retirees in maximizing their retirement savings. Remember: all matching contributions from the government and your agency must be placed in a traditional TSP account. 

Mandatory Roth TSP Contributions

For federal employees earning over $150,000 in 2025, all catch-up contributions for 2026 must go into a Roth TSP account. This means that you will be paying taxes on these contributions upfront, but qualified withdrawals in retirement will be tax-free. It’s a significant change that can impact your overall retirement plan as money in your traditional TSP pushes tax liability down the road and retirement assets in your Roth account might be tax-free when you withdraw later on, but could mean a big tax bill for the upcoming year. 

Resources and Recommendations: TSP Webinars and Calculators

To help federal employees and members of the uniformed services, PlanWell Financial is now offering a TSP webinar designed to provide comprehensive information and guidance on the Thrift Savings Plan. This webinar covers a range of topics, including investment strategy, fund information, and withdrawal strategies. 

Utilizing TSP Calculator to Plan for Federal Retirement

The simple but effective TSP Calculator is a valuable tool for federal employees looking to optimize their retirement savings. Help project the potential growth of your investments, estimate your future retirement income, and understand the impact of different contribution strategies. For the FERS pension, check out the federal retirement benefit calculator.

 

TSP FAQ

Here are some commonly asked questions regarding the federal retirement savings plan: 

Am I in the Right Investment Strategy?

Determining the right investment strategy  is crucial for maximizing your retirement savings. Consider your risk tolerance, time horizon, and retirement goals. Are you comfortable with higher-risk investments that offer potentially higher returns, or do you prefer a more conservative approach? Also consider the type of retirement plan for which you are saving and the tax implications involved.

Should I Move Money Out of the TSP?

Deciding whether to move money out of the TSP is a significant decision that requires careful consideration. Evaluate the fees and investment options available in your TSP account versus those offered in other retirement accounts, such as a traditional IRA or Roth IRA. Understand the tax consequences of any withdrawals, rollovers, or transfers. It is always smart to consult a financial professional before transferring TSP funds. If you do decide to make a withdraw, simply instruct the TSP administrator online to roll over your TSP to the new IRA provider, assuming it is an eligible rollover distribution. 

Are Roth Conversions a Good Idea?

Deciding whether a conversion to Roth is a wise choice involves considering several factors. If you anticipate being in a higher tax bracket in retirement, a Roth conversion might be beneficial, as withdrawals are tax-free. However, be mindful of the immediate tax consequences, as the converted amount becomes taxable income for the year. It’s smart to also consider the TSP transfer and TSP to an IRA rollover options.

What should pre-retirees know about partial versus full TSP withdrawals?

Partial Withdrawals

  • Flexibility: You can take out a portion of your balance (minimum $1,000) while leaving the rest invested.
  • Control: Partial withdrawals can be requested even if you’re receiving installment payments, and you can choose whether funds come from your traditional TSP, Roth TSP, or proportionally from both.
  • Taxes: Withdrawals from the traditional TSP are subject to income tax, with 20% withheld automatically. Roth withdrawals may be tax‑free if qualified.
  • Account remains open: Your TSP stays active, allowing you to continue managing investments and take future withdrawals.

Full Withdrawals

  • Permanent closure: A full withdrawal means your entire balance is distributed, ending your participation in the TSP.
  • Options: After leaving federal service, you can take the full amount as a lump sum, roll it into an IRA or other plan, purchase a TSP annuity, or set up installment payments.
  • Impact on flexibility: Once a full withdrawal is processed, you cannot later request partial withdrawals or change installment payments or take a loan from your account. 
  • Taxes: Traditional balances are fully taxable when withdrawn, while Roth balances may be tax‑free if qualified.

Next Steps for Federal Retirement Planning

PlanWell Financial Services offers comprehensive financial planning and investment advice tailored to federal employees. They provide expertise on topics such as the Thrift Savings Plan and its various account options, including the traditional TSP and Roth TSP. They can assist you in making informed decisions about rollovers, TSP transfer options, and conversions, ensuring your retirement plan aligns with your goals.

Retirement Planning Resources

Numerous retirement planning resources are available to help federal employees navigate the complexities of retirement. These resources include online calculators, federal retirement webinars, and educational materials covering topics such as investment strategies, tax planning, and estate planning. These tools can assist you in projecting your future retirement income, understanding the tax implications of different retirement plans, and determining your retirement plan.

Check out the FERS webinar calendar here! 

Investment Advice and Support

Seeking professional investment advice and support can be invaluable for federal employees looking to optimize their retirement savings plan or account. A qualified financial advisor can help you assess your individual financial situation, understand your retirement goals, and develop a tailored investment strategy. They can also provide guidance on topics such as asset allocation, risk management, and tax-efficient investing. Financial advisors can assist pre-retirees. Schedule a meeting now. 

Ben Derge

About Ben Derge

Writer & Benefits Consultant · ChFEBC℠

Ben is a Chartered Federal Employee Benefits Consultant (ChFEBC℠) with over a decade of experience advising federal employees on their retirement benefits. His passion for helping the federal community was inspired by his late grandfather, a colonel in the Army. Ben is dedicated to ensuring federal and military families receive quality, actionable information about FERS, TSP, survivor benefits, and more.