My 401k contribution is shown on box 12 with an AA

[fmallison]

I should be able to deduct this

[LindaA · Accepted solution]

There are two types of 401(k) plans: traditional and Roth. Contributions to a traditional 401(k) (indicated by code D in Box 12 of the W-2) are tax-deferred. The code AA shown in Box 12 of your W-2 indicates a contribution to a Roth 401(k). Unlike Traditional 401(k) contributions (which are pre-tax), Roth 401(k) contributions are included in income (i.e, not deductible).

For more information, please see IRS Retirement Plans FAQs for Designated Roth Accounts.