Can I Move My 401(k) (or IRA) to the TSP?

Why Federal Employees Consider Moving to the TSP

Keeping up with all your retirement accounts can feel like alphabet soup. Maybe you have  
a 401(k) from a previous job or even a 403(b), 457, or a traditional IRA floating around. You’ve probably wondered, “Can I roll these into my Thrift Savings Plan (TSP) to simplify things?” 

And I get it. 

Life is complicated enough without juggling five retirement accounts and a stack of login passwords. I’m locked out of more accounts than I care to admit. So, the idea of consolidating and streamlining your retirement savings into one easy-to-watch account is really appealing. 

And the answer to your question is: 

Yes. You can absolutely transfer many types of retirement accounts into your TSP.  

Let’s break it down. 

What You Can Move into the TSP 

Thankfully, the TSP allows you to transfer in pre-tax retirement accounts like: 

• Traditional 401(k) 
• Traditional 403(b) 
• Traditional 401(a) 
• Traditional IRAs 

If you have a Roth TSP, you can also move Roth employer-sponsored accounts—like a Roth 401(k), Roth 403(b), and Roth 457—into it. That’s a big win if you’re trying to clean up your financial closet and consolidate everything. 

Here’s the way I like to explain it: 

Think of your retirement accounts like frozen income cubes. A traditional 401(k), IRA, or TSP—all of them are freezers keeping your taxable income frozen. As long as you’re moving frozen cubes from one freezer to another (traditional to traditional or Roth to Roth), there’s no tax bill. The income stays frozen. 

But—and this is big—once you pull those cubes out of the freezer and let them thaw (i.e., move them into a different tax type), that’s when the IRS wants a slice. So make sure your transfer stays within the same tax “freezer.” 

What You Can’t Move into the TSP 

There’s one account TSP won’t take, no matter how nicely you ask: 

The Roth IRA. 

Roth IRAs are off-limits for transfers into the Roth TSP. They just don’t play nicely together. 

The Advantages of Consolidating Into the TSP

Why Would You Move Accounts Into the TSP? Let’s be real—there are some solid reasons to consolidate everything into your TSP: 

Simplicity and Organization

All your eggs are in one basket. And as Andrew Carnegie said, “Put all your eggs in one basket—and then watch that basket like a hawk.” That’s not anti-diversification—it’s anti-chaos. You don’t want a junk drawer full of retirement accounts you forgot existed.  

I’ve seen too many retirees with overlapping funds, outdated beneficiaries, or worse, old accounts just sitting idle. 

Lower Fees 

The TSP is known for its rock-bottom fees. While it doesn’t have the lowest fees in the financial world, it’s costs are among the lowest available anywhere for individual investors. That’s a win for long-term growth. 

Potentially Faster Access 

Depending on your retirement status and how your previous employer plans were structured, consolidating your accounts into the TSP may mean quicker access to your funds when the time comes. 

The Drawbacks of Moving to the TSP

But, here’s the flip side. Consolidating your retirement accounts into the TSP has clear advantages—but it’s important to take a balanced view. Let’s be fair and talk about the downsides too. 

Limited Investment Choices 

Once you roll your accounts into the TSP, you’re stuck with the five core funds (C, S, I, G, and F) and the L Funds. That’s it. No Vanguard ETFs. No mutual funds with long track records. Just those TSP options. 

What if you rolled your old 401(k) into an IRA instead? You could build a highly customized portfolio with thousands of investment choices.  

At SWAN Capital, for example, we manage portfolios using low-cost ETFs, including the full suite of 80+ Vanguard options, all inside of Schwab’s platform. An IRA gives you this kind of freedom and flexibility that the TSP simply doesn’t offer. 

TSP Withdrawal Rules 

Once those funds are inside the TSP, they’re subject to the TSP’s withdrawal rules. That might limit how and when you can take money out—especially in retirement when cash flow is king. 

This is where strategy matters. You want to avoid painting yourself into a corner. 

So, How Do You Actually Make the Transfer? 

Let’s say you’ve weighed all the options and decided that consolidating all your retirement accounts into the TSP just makes life easier. What’s your next move?  

Here’s where it gets a little bureaucratic—but that’s nothing new for you as a federal employee. 

Step 1 — Request Transfer Paperwork from TSP

Call TSP or log in online to get their transfer paperwork. 

Step 2 — Coordinate with Your Former Employer Plan

Your former employer plan will also likely have forms—and they may require a signature from a plan administrator or third-party administrator to confirm you’re no longer employed. 

Step 3 — Complete a Trustee-to-Trustee Transfer

Once approved, the funds transfer directly to TSP.  
Remember: Don’t take the check yourself. You want a trustee-to-trustee transfer to avoid triggering a taxable event. 

Step 4 — Get Professional Help If Needed

Advisors can ensure your transfer is tax-efficient and stress-free. At SWAN Capital, we help federal employees with these transfers all the time. Think of us like your financial valet—we make the process smooth and stress-free. 

Should You Move Your Old Accounts Into the TSP?

Maybe. 

It depends on your goals, your timeline, and how much flexibility you want. 

If you’re looking for simplicity and low costs, TSP could be your one-stop shop. 
But if you’re nearing retirement and want more investment options, income strategies, or tax planning flexibility—an IRA might be the better route. 

Final Thoughts — Choosing What’s Right for You

You can move your 401(k) or IRA to the TSP—but it’s not always the best move for everyone.
If you’re unsure, watch the short video below to help you decide which path fits your goals.

If you’re looking for financial guidance about your TSP allocations, my team at SWAN Capital is here to help. We’d welcome the opportunity to sit down with you and  build a retirement plan that lets you sleep well at night. 

Ready to simplify or optimize your retirement strategy?

Text SWAN to 1-800-848-8768 or schedule your complimentary visit today!

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Welcome to Swan Capital, LLC (“SWAN”), your friendly neighborhood Registered Investment Adviser (“RIA”). Now, while we may have a fancy title, remember that our registration doesn’t guarantee we’re flying high above the rest. This communication hasn’t been blessed or verified by the United States Securities and Exchange Commission (SEC) or any state securities authority. At SWAN, we believe in giving you personalized investment advice as unique as a swan’s graceful glide. We work with clients in their own states, making sure to play by all the regulatory rules or find the right exceptions. But here’s the scoop: all investments come with risks—like a wild swim in the pond—so no investment strategy can promise profits or protect you from the occasional splashdown. Just remember, past performance is like a cozy old story; it might be nice to reminisce about, but it doesn’t promise what’s coming next. 

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Thanks for gliding along with us at SWAN! We’re here to help you soar to new financial heights while ensuring you can truly Sleep Well At Night!