I currently have a rollover IRA which I no longer contribute to and a 401k which I currently contribute to. I would like a Roth account to be more diversified from a tax perspective. I currently put 12% into the 401k (the company matches 0.5% on the first 6%, so I get an addition 3% of company match). I would like to reduce my 401k contribution to 6% and put the remaining 6% into the Roth IRA.
My questions are, how do I make sure that I am contributing an equal amount? It's not completely clear what 6% of pretaxed income equals in post tax amount. And, is going from 12% pretaxed/0% Roth to 6% pretax/6% Roth too much Roth or how do I determine if I have a sufficient spread of pretax and Roth savings?