However, TurboTax won't allow me to submit electronically because my Box 12b in W-2 is over the allowed $18,500 amount. How can I work around this issue? Technically my W-2's report that I deferred too much. I want to still file electronically.
TurboTax is aware of the e-filing issue that you are having and is currently working on a solution. An update to fix the issue is expected to be released around 4/5/2019.
Be sure to sign up for updates to be alerted as soon as there is a solution. If you do not want to wait for an update, you have the option to paper file your tax returns as this is only an e-filing issue.
You can check out this recently added TurboTax FAQ for more information: Excess 401(k) Contribution Preventing E-filing.
it appears that no fix will be released.
How do you not have the software developers to resolve this? We are paying significant money for this service and now have to paper file. Please provide a better resolution to this.