Rule 233 of the Draft Income-tax Rules, 2026 lays down the manner of authentication of notices and other documents communicated electronically by income-tax authorities. It provides that electronic communications shall be deemed authenticated if the name and office of the issuing authority are properly displayed. In the case of email communications, authentication is satisfied where the authority’s name and office are printed either in the email body or in its attachment, and the email is sent from the designated official email address. In the case of electronic records hosted online, authentication is valid if the authority’s name and office are displayed within the electronic record or printed in its attachment, and the record is made available on the designated website. The Principal Director General or Director General of Income-tax (Systems) is empowered to specify the designated email addresses, official websites, and the procedures, formats, and standards to ensure secure and authentic communication. The rule adopts definitions of “electronic mail” and “electronic record” as provided under the Information Technology Act, 2000, thereby aligning tax administration procedures with established digital law standards and ensuring legal certainty in electronic service of documents.
Extract of Rule No. 233 of Draft Income-tax Rules, 2026
Rule 233
Authentication of notices and other documents.
(1) Every notice or other document communicated in electronic form by an income-tax authority under the Act shall be deemed to be authenticated, —
(a) in case of electronic mail or electronic mail message (hereinafter referred to as the e-mail), if the name and office of such income-tax authority—
(i) is printed on the e-mail body, if the notice or other document is in the e-mail body itself; or
(ii) is printed on the attachment to the e-mail, if the notice or other document is in the attachment, and the e-mail is issued from the designated e-mail address of such income-tax authority;
(b) in case of an electronic record, if the name and office of the income-tax authority—
(i) is displayed as a part of the electronic record, if the notice or other document is contained as text or remark in the electronic record itself; or
(ii) is printed on the attachment in the electronic record if the notice or other document is in the attachment,
and such electronic record is displayed on the designated website.
(2) The Principal Director General of Income-tax (Systems) or the Director General of Income-tax (Systems) shall specify the designated e-mail address of the income-tax authority, the designated website and the procedure, formats and standards for ensuring authenticity of the communication.
(3) For the purposes of this rule, the expressions—
(a) “electronic mail” and “electronic mail message” shall have the same meanings respectively assigned to them in Explanation to section 66A of the Information Technology Act, 2000 (21 of 2000);
(b) “electronic record” shall have the same meaning as assigned to it in section 2(1)(t) of the Information Technology Act, 2000 (21 of 2000).

