Let's say two spouses are negotiating a separation agreement. They each have a mix of pre-tax and post-tax retiremenent accounts. That includes 401Ks, traditional IRAs, and Roth IRAs. There is also a bit of cash sitting in bank accounts.
My holdings overall are a bit larger than hers, so most likely I'll need to make a payment to her. It will probably come from my bank account or the principle of my Roth IRA. (We will avoid doing any QDROs.)
In order to come up with a fair settlement, how do you compare pre-tax to post-tax accounts?
My thought was to multiply pre-tax accounts by .85, thus reducing them by 15 percent to account for future taxes.
What do you think? Is there a standard way to do this?