abctax55
Level 15

Split the returns... adjust as necessary.  Print, mail (I would do it by April 15 to be safe altho May 17th may be OK).

You cannot efile a superseding return. 

And prepare yourself, and your client for love letters from the IRS.  Evaluate whether a $ 900 savings will be worth it in the long run.

It wouldn't be in my practice.  YMMV

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