Thank you for your response! Box 12 on both of my 2022 W-2s shows my 401k contributions with code AA (Designated Roth contributions under a section 401k plan) and I believe it means all my 401k contributions were after-tax contributions. Please, let me know if this is not the case. Thanks again!
https://www.irs.gov/instructions/iw2w3#en_US_2023_publink1000308380
Code AA—Designated Roth contributions under a section 401(k) plan.
Use this code to report designated Roth contributions under a section 401(k) plan. Do not use this code to report elective deferrals under code D. See Designated Roth contributions .
