Filing Form 10-IEA inadvertently can lock business income taxpayers into the old regime for that year since it is a binding election. If the return has not been filed yet, simply do not attach the form when submitting. If it was already submitted with a return, a revised return filed before the July 31 or August 31 deadline can correct the regime flag. This [ITR-2 AY 2026-27 guide](https://taxgarden.in/blog/itr-2-ay-2026-27-who-can-file-changes-deadline) has a clear section on how regime selection interacts with Form 10-IEA and which filers are affected.