Age-. The general rule in the industry is that once an A/C unit reaches 10-15 years, the idea of replacing the unit is usually a much better investment than putting money into an older system. If your system is at this threshold, it's usually wise to begin expecting, not wondering, when the system will fail.
You can keep the money in the TSP after you leave your federal job to benefit from the low fees, or you can roll over the money into an IRA or a new employer's 401(k), 403(b) or 457.
There is a little known IRS rule called a 72(t). It allows you to take equally substantial distributions, to ELIMINATE the 10% early withdrawal penalty normally due for withdrawals prior to age 59-Â½. So let's review how it works. You stop working due to loss of job, or health, layoff, RIF, or an early out offer. You can roll your TSP into an IRA. After the rollover is completed you apply for a 72(t) equally substantial distribution.