where does turbotax account for catch up contributions?

[majuby]

I am reviewing old tax records. I assumed entering the information from the W2 for 401k contributions would be part of its process. I cannot find how 2020 accounts for catch-up contributions. It keeps telling me I contributed excess.

[DoninGA]

All contributions to a 401(k) are reported on the W-2 in box 12 with a code of D.