Every year, thousands of federal employees leave the Thrift Savings Plan (TSP) to take advantage of the greater flexibility and investment options that an Individual Retirement Account (IRA) can offer. The move can be a smart one—but only if it is executed correctly. Getting the money from the TSP to an IRA the wrong way can trigger massive, entirely avoidable tax bills and penalties. This article walks through the most critical mistakes retirees make during this transition and, more importantly, how to avoid them.
Mistake #1: The Indirect Rollover
The single most costly error a federal employee can make when moving money out of the TSP is choosing an indirect rollover. This is the process by which the TSP sends the funds directly to you—either as a check to your mailbox or as a deposit into your personal checking or savings account—before you then attempt to transfer the money to your new IRA.
This approach creates two serious problems. First, the TSP is required by law to withhold at least 20% of the distribution for federal income taxes. On a $1 million TSP balance, that means $200,000 is immediately withheld before you ever see the money. Second, if the funds are treated as a simple withdrawal rather than a rollover, you could face a total tax burden approaching 40% depending on your state of residence, in addition to potential early withdrawal penalties.
The correct approach is always a direct rollover. This means the money travels directly from the TSP to the financial institution holding your new IRA—whether that is Vanguard, Schwab, Fidelity, or another custodian—without ever touching your personal accounts. When done correctly, a traditional TSP rolling directly into a traditional IRA, or a Roth TSP rolling directly into a Roth IRA, results in zero taxes and zero penalties. The key is to confirm explicitly with both the TSP and your receiving institution that the transfer is being processed as a direct rollover.
Mistake #2: Losing the Rule of 55
Many federal employees are unaware of a powerful provision that exists within the TSP but does not automatically carry over to an IRA. Under the “Rule of 55,” if you retire from federal service in the year you turn 55 or later, you are permitted to take withdrawals from your TSP immediately and without the standard 10% early withdrawal penalty—even though you are under the age of 59½.
This rule does not transfer to an IRA. If you are 57 years old, retire, and immediately roll your entire TSP balance into an IRA, you have effectively locked yourself out of penalty-free access to that money until you reach 59½. Any withdrawal from the IRA before that age will be subject to the standard 10% early withdrawal penalty.
The practical solution is straightforward: before executing the rollover, calculate how much money you will need to live on between your retirement date and your 59½ birthday. Keep that amount in the TSP, where you can access it penalty-free under the Rule of 55. Everything else can be moved to the IRA without issue. It is also worth noting that for federal employees covered under Special Provisions—such as law enforcement officers, firefighters, and air traffic controllers—the penalty-free withdrawal age is even earlier than 55, providing additional flexibility.
Mistake #3: Rolling Over Required Minimum Distributions (RMDs)
For federal employees who are already in their 70s and subject to Required Minimum Distributions, there is an additional layer of complexity to navigate before executing a rollover. The IRS does not permit RMDs to be rolled over into an IRA. If you attempt to roll over your entire TSP balance—including the portion that represents your current year’s RMD—the RMD amount will be considered an ineligible rollover contribution and will be treated as a taxable distribution.
The proper sequence is to satisfy your RMD obligation from the TSP first, withdrawing the required amount for the current year, and then initiate the rollover of the remaining balance to the IRA. This keeps the transaction clean and compliant. While this consideration applies to a smaller subset of the federal workforce, for those in the RMD stage it is a critical step that cannot be overlooked.
Mistake #4: Moving Without an Investment Plan
The TSP is elegantly simple. It offers five core investment funds—the G, F, C, S, and I Funds—along with Lifecycle funds that blend them automatically. For many federal employees, this simplicity has been a feature, not a limitation. It removes the paralysis of choice and keeps costs extremely low.
An IRA, by contrast, opens the door to thousands of investment options. Many of these are excellent; many are not. Without a clear investment plan before making the move, retirees can find themselves overwhelmed, making poor investment decisions, or unknowingly paying high fees that erode their returns over time. The flexibility of an IRA is only an advantage if you know how to use it.
Before moving to an IRA, you should have a concrete plan that addresses three key questions: What investments will you hold, and what are their expense ratios? How will you structure withdrawals to minimize your tax burden over time? And does the added complexity of an IRA serve your specific retirement goals, or does the simplicity of the TSP actually serve you better?
Your Rollover Checklist
If you have decided that moving from the TSP to an IRA is the right choice for your situation, the following checklist will help ensure the process goes smoothly. First, confirm that the transfer is a direct rollover, with the funds moving institution-to-institution without passing through your personal accounts. Second, calculate your “bridge”—the amount of money you need to retain in the TSP to cover living expenses between now and age 59½, so you are not penalized for early IRA withdrawals. Third, if you are subject to RMDs, satisfy your current year’s distribution from the TSP before initiating the rollover. Finally, arrive at your new IRA with a clear investment strategy in place so that the added flexibility works in your favor rather than against you.
The TSP is one of the best retirement savings vehicles available to any American worker. Moving away from it is not inherently wrong, but it demands careful, deliberate planning. By avoiding these four common mistakes, you can make the transition on your own terms—without leaving a single unnecessary dollar behind.