How can I correctly enter catch-up contributions to my 403(b) beyond the $19,000 limit for 2019 without Turbotax interpreting it as overpayment?

[vkamat]

I double checked with my employer that I am eligible for up to $3,000 beyond the $19,000 limit for 2019. However TurboTax offers me no opportunity to enter this information or override it manually. Thanks for any help or insights.

[dmertz]

Enter the amounts shown in box 12 of your W-2 exactly as they are, only in box 12 of TurboTax's W-2 form, nowhere else in TurboTax.  Do not enter them as IRA contributions, a 403(b) is not an IRA.

Although I think it's unlikely, if TurboTax warns you during entry of the W-2 that you are over the contribution limit, ignore the indication.  If TurboTax will not allow e-filing with this condition present in your tax return, file by mail.