This blog post clarifies that individuals and pensioners filing ITR-1 or ITR-2 (without business or professional income) do not need to file Form 10-IEA to switch between the old and new tax regimes on an annual basis. It explains that the choice can be made directly within the ITR form itself each year, even when opting out of the default new regime (effective AY 2024-25) or switching back to it later. The post contrasts this flexibility with the stricter requirement for those with business income (filing ITR-3/ITR-4) who must use Form 10-IEA to opt out and face limitations on switching back.