I just turned 60, so I can start taking from my tIRA now. I'm trying to decide whether to continue to live on after tax investments (a lot of which is cash), staying in the 15% bracket and doing Roth conversions to the top of it. The other alternative is starting withdrawing from the tIRA while staying in the 15% bracket. This would stop me from converting, but would allow me to leave my after tax money alone. And it would also make my RMDs after 70 smaller.
Since I put the money in the tIRA while I was in the 25% bracket, withdrawing at 15% is a savings, but I'm thinking that over time the Roth conversion would be the best option. Especially since I'm hoping not to have to draw on it, and to be able to leave it to DD as a tax advantaged inheritance.
But either way, I'm also waiting until 70 to start SS. It and RMDs will probably put us over the 15% bracket, so I guess I should maximize the conversions while I can.
"Good judgment comes from experience. Experience comes from bad judgement." - Will Rogers
DW and I - FIREd at 50 (7/06), living off assets