While AIS provides a more extensive view of income from various sources, Form 26AS focuses solely on TDS and TCS information. It is advisable to refer to both AIS and Form 26AS during ITR filing since they serve distinct purposes.

Finance Act, 2020 (Budget 2020-2021) and amendment, inserts new Rule 114-I, had introduced a New section 285 BB in THE INCOME TAX ACT 1961 TO IMPLEMENT REVISED FORM 26 AS (Annual Information System).