Filing Business Income Under ITR-4? Know the Rules for Choosing and Switching Between Old and New Tax Regimes

The Income-Tax Department has officially enabled the Excel utilities for key income-tax return (ITR) forms, including ITR-1 (Sahaj), ITR-2, and ITR-4 (Sugam), on its e-filing portal for the financial year 2025–26 (assessment year 2026–27). For individual taxpayers filing business income under the ITR-4 Sugam form, the tax department has outlined strict guidelines regarding deadlines and the process for choosing or switching between the old and new tax regimes.