I haven't always been Mustachian....Found out about this lifestyle a little late so doing my best to "catch-up."
Under my employer's 457 Plan one can normally deduct 18K per year. However if you are 50 plus, that can to go to 24K per year. BUT here's the "loop hole:"
For those that haven't fully contributed over the course of their employment, you may be entitled to a "3-YEAR PRE-RETIREMENT CATCH UP PROVISION" in which you may be able to contribute UP TO $36,000 (double the normal contribution of 18K) for up to 3 years, but not including the year in which you retire. This amount can even be higher if the normal contribution increases....
So right now, I'm contributing $36K to my 457. My wife is contributing $24K to her 403b and $24K to her 457 for a grand total of $84K