Read This Before You Tap Your TSP to Pay Off Your House
Article Excerpt: "...One misconception that I see is that some feds assume that traditional TSP distributions will be taxed at capital gains tax rates, but this is not the case. These distributions are simply added to your income in whatever year you take the money out. It is also important to note that the TSP is required to withhold 20% of any traditional TSP distributions to cover taxes..."
Resource: www.govexec.com