Anonymous wrote:I'm in your same position and hoping to stay on until I'm at least 62. While I could collect FERS at 57 that would replace just 30 percent of my final salary. You can't take anything out of your TSP without a penalty until age 59.5 and you can't collect social security until 62 so even with my mortgage paid off and my kids out of the house at 57 I can't live on 30 percent of my final income. Plus if you go beyond your initial retirement date you get a higher percentage, the multiplier by year is 1.1% rather than 1% per year. Adding my TSP and SS should get me pretty close to my final salary for life if I stay until age 62, which should be quite do-able.
If you retire at 55 or later you can withdraw TSP funds without penalty.
https://www.tsp.gov/LifeEvents/career/enteringRetirement.html
I won't have 30 years of service at 57 so I’ll probably try to stay until 60 (+/- 2 years depending on whether I love my job or hate it). Kid should be out of college when I am 58 or so, so the timing works for me.