My husband began withdrawing his TSP in 2021, mostly rolling it into a Roth IRA. I just finished withdrawing mine this year, also mostly to a Roth IRA. All of our TSP accounts were with pre-tax dollars. The 1099-R he received last year, the one I received this year and the past 8 years, with distribution code G, has the taxable amount equal to the gross distribution amount (Box 1 and Box 2a show the same amount). For some reason, probably the "new TSP system", the 1099-R he received this year with distribution code G, shows the taxable amount exactly half of the gross distribution amount. I don't think this is correct, but I contacted TSP and they assured me that the amount shown in 2a on the 1099-R he received is correct. I am reluctant to file using the amount they show in 2a. Help?
