can I fix 1099-R taxable amount after rollover

[yj0]

I have rolled over my after-tax 401K to roth IRA (distribution code on 1099R is G). At the time of rollover, they don't ask if I want to put the 'taxable amount' (a few hundreds) from my after-tax 401K into my pre-tax IRA in order to defer tax.  Thus the 'Taxable amount' is also rolled over to my Roth IRA. I believe the `taxable amount` is generated from the capital gain of the after tax amount in my after-tax 401K.

Now can I still manually withdraw that taxable amount that has already been rolled over to my roth IRA and put it into my pre-tax IRA to defer the tax ? 

Thank you.

[AmyC · Accepted solution]

If you have the 1099-R in your hand and it is for 2021, it is too late to move money in/ for/ related to 2021. If they went ahead and sent the 2022 form, you could add money to the pre-tax IRA so next year's tax will not have the earnings.

[yj0]

Hi @AmyC , Thank you for the reply. do you have reference to the IRS publication describing that such fix/move is allowed ? 

[FangxiaL]

The taxable amount could be a pre-tax employer match to your Roth 401(k) contributions. The earnings should not be taxable when you rolled over from Roth 401(k) to your Roth IRA. If you rolled over the pre-tax to the after-tax account, the pre-tax portion is taxable. 

@yj0