New Delhi, April 3 -- Senior citizens who are earning income below the basic exemption limit will no longer use Form 15H to avoid tax deducted at source (TDS). Under the Income-tax Rules 2026, this form has been replaced by Form 121.

Both Form 15G and Form 15H have now been replaced by a single, unified Form 121. The old forms were particularly used by individuals and senior citizens with low taxable income to prevent unnecessary TDS deductions.

Meanwhile, Form 121 serves the same purpose. It can be used by a taxpayer to avoid TDS if their tax liability for the year is nil. Based on this declaration, the payer will not deduct tax on income or credit due to the taxpayer.

Form 121 represents a major transformation as it integrates the fo...