The Thrift Savings Plan (TSP) is a retirement savings plan for federal and Postal Service™ career employees and members of the uniformed services. It is similar to the 401(k) plans offered by many private employers.
TSP Roth is a new offering that allows career employees to contribute after-tax dollars to the TSP. Both the contributions and their earnings will be tax-free when withdrawn, as long as Internal Revenue Service (IRS) requirements are met. This new option provides employees with greater flexibility in managing their retirement income.
With the TSP Roth option, participants can choose to invest after-tax dollars in any of the TSP funds, up to the Internal Revenue Code limits.
Employees may visit www.TSP.gov to find answers to questions about TSP Roth. Employees also will find forms and publications, such as TSP-30, A New TSP Element, a TSP Roth video, and other information there.
Employees should carefully consider whether TSP Roth would be to their advantage. As with all tax matters, employees should seek advice from qualified tax or financial advisors for information pertaining to their specific tax situations.
To enroll in TSP Roth, employees may access PostalEASE on the Internet at https://liteblue.usps.gov, at an Employee Self-Service Kiosk (available in some facilities), on the intranet (from the Blue page), or by calling the Employee Service Line toll-free at 877-477-3273, option 1. PostalEASE TSP and TSP Catch-up Worksheets have been updated and are available on LiteBlue.
— Compensation and Benefits,
Labor Relations, 8-9-12