Q. After entering retirement from CSRS, are Thrift Savings Plan funds withdrawn classified as income in addition to the 20 percent accessed at the time of withdrawal from the TSP account. Are there ways to avoid double taxation if they are taxed twice other than rolling over into an IRA or Roth IRA?
A. The traditional TSP funds you withdraw are classified as ordinary income on your tax return. They are not subject to double taxation. The 20 percent withheld from your payment(s) is a deposit against your tax liability. If the distribution is not a required minimum distribution and you meet the timing limits, you may roll your distribution over to an IRA to avoid current taxation.