When you have a non-deductible Traditional IRA contribution I am aware that Form 8606 needs to be filed with the return for that tax year. The other comments I see regarding this are to "keep good records". What is considered good recording keeping of this? Is keeping a copy of the return filed with the Form 8606 the record keeping this refers to? What about the brokerage firm where the IRA account resides, should they be informed concerning a non-deductible IRA contribution, and what do they do with this information? Do they keep track deductible and non-deductible IRA contributions on the brokerage account statement?
What happens when the money is taken out at retirement with respect to the non-deductible IRA contributions, how are they treated differently?
I have searched about this and the only articles I have been able to find that discuss this pertain to some sort of special conversation of a Traditional IRA to a Roth IRA in 2010. Thanks!
Edward