1) Single, and do not expect this to change.
2) Assume standard deduction after retirement. I'm hoping things will work out that I'll be able to sell my current home when I retire and have sufficient proceeds to buy a new home with cash or a very small mortgage.
3) I plan to move out of state upon retirement, but not sure where. Definitely could be in a state without income taxes.
4) $117,000 current income
5) TSP: $285,000; rIRA $42,000; taxable investment account: $10,000; no tIRA
6) Per SSA.gov, estimated SS benefits if taken at age 62: $1,731/mo; if taken at age 67: $2,567/mo.
7) Do not expect to work after retiring.
8) In 2013, I hit the 28% bracket for the first time and expect to reach it for 2014 as well, but I was not maxing out the TSP in those years (can't change the past). So hopefully starting with 2015 I'll be back in the 25% bracket.
Well, here's what I'd suggest:
1) max out your TSP ($17,500)
and then your traditional IRA ($5500) EDIT: phased out of the deduction, so never mind. You need to get out of those higher tax brackets ASAP. If you also have access to an HSA, do it. Given that you're a single filer, it'll be a lot harder to drop into lower tax brackets, but that would be my first step.
2) consider itemizing your deductions, if you don't already. I don't know your current housing situation, but if you own and have a mortgage, both your property taxes and mortgage insurance are deductible. So is your state income tax or sales tax. Those will help drive down your tax liability as well.
3) If you have more money to save after step 1 (and you should!), I'd put it in taxable accounts (to help build your Roth Ladder later), or find some other lucrative investment (rental real estate seems to be popular around here).