The Thrift Savings Plan runs required minimum distributions largely on autopilot. It calculates the amount, watches what comes out during the year, and sends a payment on its own if the total falls short by the deadline. An IRA owner usually gets a notice from the custodian and is left to handle the rest.
That automation is useful, and it rests on a few rules that do not match how IRAs work. Federal retirees who also hold IRAs, Roth money in the TSP, or a job they have not left yet tend to run into the differences.
TSP required distributions start once two things are both true: the participant has separated from federal service and has reached their RMD age, which is 73 or 75 depending on birth year. A federal employee still on the job past that age owes no TSP distribution yet. The first year in which both conditions are met is the first distribution calendar year.
The amount comes from the traditional balance only. The TSP divides the traditional balance at the end of the previous year by the IRS Uniform Lifetime Table factor for the participant’s age. Roth money in the TSP is not subject to required distributions for the participant, and withdrawals of Roth money do not count toward the requirement. Converting traditional money to Roth inside the TSP does not count either, because the money never leaves the account.
The first year has an extra window. The TSP has until April 1 of the following year to make the first required payment, a date called the required beginning date. After that, every year’s required amount is due by December 31. Someone who lets the first payment slide to April gets two required payments in the second year, one by April 1 for the first year and one by December 31 for the second.
Any withdrawal from the traditional balance during the year counts toward the requirement. If the year’s withdrawals fall short, the TSP sends a supplemental payment for the rest before the deadline. Required distributions cannot be rolled over, so if a participant asks to roll over a withdrawal in a year a required distribution is due, the TSP pays the required amount out first and rolls over only what is left.
The TSP’s required distribution stands on its own. It is figured and satisfied inside the TSP, and IRA withdrawals do not satisfy it. The reverse holds too: the TSP payment does nothing for an IRA’s required distribution, which follows the IRA rules.
What happens if the payment is late? The automation depends on the TSP’s records. The TSP’s own tax booklet warns that if a participant’s date of birth or separation date is wrong in its records, or the agency reports the separation late, the required payment can miss its deadline. The shortfall then faces a 25% excise tax, reduced to 10% when corrected within the correction window. The TSP also will not mail a required payment check to an address it knows is wrong. Accurate records are the participant’s part of the deal.
So the calendar runs like this. The first distribution calendar year is the first year with both separation and RMD age. Its payment is due by April 1 of the following year. Every later year’s payment is due by December 31. The excise tax and its correction window apply only when a payment misses those dates.
Linda retired from federal service at 70. She turns 73 in July, her RMD age. Her TSP holds $530,000 in traditional money at the end of the prior year and $100,000 in Roth. The Uniform Lifetime Table factor for 73 is 26.5, so her required amount is $20,000, figured on the traditional balance alone.
In the first version, Linda has monthly installments running from her traditional balance. By December they total $24,000, which covers the $20,000 requirement, and the TSP sends nothing extra. Her Roth balance is untouched by the calculation.
In the second version, Linda takes no traditional withdrawals during the year. She takes $20,000 from her Roth balance in August for a home repair. That withdrawal does not count. With no traditional withdrawals, the TSP sends her the $20,000 required payment from the traditional balance by the following April 1, and then a second required payment by December 31 of that second year.
In the third version, Linda never retired. She is still a federal employee at 74, so she owes no TSP required distribution at all. Her first distribution calendar year will be the year she separates, with that year’s payment due by April 1 of the next year.
The TSP takes most of the work out of required distributions. It does the math, tracks the withdrawals, and sends the money if needed, which is more than an IRA custodian does.
What matters is what counts and what does not. Traditional withdrawals count, Roth withdrawals and in-plan conversions do not, and the TSP’s requirement is separate from any IRA’s. For the IRA side of the same math, our RMD calculator figures the required amount from a prior year-end balance and an age.
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Disclaimer
This article is for educational and informational purposes only. It is not tax, legal, or financial advice and does not create an advisor-client relationship. Always consult appropriate professionals regarding your specific situation.