If you contribute to a Roth TSP, and diligently made the changes required by the Defense Finance and Accounting Service (DFAS) in January, you got overpaid on February 13, 2015 because DFAS failed to take those new TSP contributions out of the mid-month pay. Your end-of-month pay will have the entire Roth TSP contribution deducted, and the two paychecks together should come out to the right amount. For more details and guidance, see this Paycheck Chronicles post.
Overpayment on Roth TSP
