Understanding Daily Backup Obligations for Electronic Books under Income Tax Act 2025

1. Background: Why Rule 46(8) Is Causing Panic

With the rollout of the Income Tax Act 2025 and corresponding Income Tax Rules 2026, many finance teams and professionals are worried about one specific requirement—daily backup of books of account “maintained in electronic mode” under Rule 46(8).

A common assumption in practice is:

“If accounts are written in Tally / Busy / Excel / any software on a computer, they are maintained in electronic mode; therefore daily backup on servers in India is compulsory for everyone.”

If this assumption were correct, even a small shop maintaining accounts on a single desktop would be required to maintain daily backups on servers physically located in India—an onerous, expensive and, for many, technically unrealistic obligation.

However, a careful reading of the Income Tax Act 2025, Income Tax Rules 2026, earlier Income Tax Act 1961, Information Technology Act 2000, and Companies Act 2013 indicates that this understanding is too broad. The real issue is not merely the use of a computer, but whether books are being maintained “in electronic mode” in the specific legal sense used in the new law.

This article systematically unpacks that distinction and explains when exactly Rule 46(8) is triggered.

2. Statutory Framework: How the New Law Has Evolved

2.1 Definition of “Books or Books of Account” – Old vs New

Under the Income Tax Act 2025, Section 2(19) defines “books or books of account” to include:

  • Traditional records like ledgers, day-books, cash books, account-books, and other books, whether:
    1. Kept in written form; or
    2. Kept in electronic or any digital form, or on cloud-based storage, or on any electromagnetic data storage device such as floppy disk, tape, portable data storage device, external hard drive, or memory card; or
    3. Kept as print-outs of data stored in any such electronic or digital form or on such devices.

Under the Income Tax Act 1961, Section 2(12A) defined books of account more narrowly. It covered written, electronic, and digital forms and print-outs of data stored on electromagnetic devices, but did not mention cloud-based storage.

This shift is meaningful:

  • The old law recognized books stored physically or digitally (on local storage/media).
  • The new law goes further to expressly recognize cloud-based storage and networked digital environments where records may not be tied to a specific physical device at the assessee’s premises.

2.2 Section 62 and Rule 46 – The New Compliance Architecture

Section 62 of the Income Tax Act 2025 (corresponding to Section 44AA of the old Act) obliges specified assessee to keep and maintain books of account so that the Assessing Officer can compute total income correctly.

Section 62(3) authorizes the Central Board of Direct Taxes (CBDT) to make rules prescribing:

  • What books must be kept and maintained
  • The form, manner, and place of such maintenance
  • Retention period for the records

Exercising this power, CBDT notified Rule 46 of the Income Tax Rules 2026, titled “Maintenance of Books of Account under Section 62”. Sub-rules (1)–(7), (9), and (10) address various aspects of keeping and maintaining books and documents.

The controversial clause is Rule 46(8), which states:

“The books of account and other documents specified in sub-rules (1), (4), and (6) maintained in electronic mode shall remain accessible in India at all times, and the backup of such books of account and other documents maintained in electronic mode shall be kept on a daily basis in servers physically located in India.”

Two immediate observations:

  1. Rule 46(8) applies only to books “maintained in electronic mode”, not to all books kept on computers in general.
  2. There was no equivalent requirement in the earlier Income Tax Rules 1962. This is a fresh obligation introduced under the new regime.

The controversy, therefore, centres on the precise meaning of “maintained in electronic mode” and whether it is the same as “maintained on a computer system”.

3. What Does “Electronic Mode” Really Mean?

3.1 Plain Meaning and Comparative Definitions

The new Act and Rules do not define “electronic mode” directly. We must therefore rely on:

  • Ordinary meaning of the words
  • Usage pattern across the new Act and Rules
  • Parallel definitions in related legislation

Conceptually:

  • “Electronic” relates to the use of electronic technology for processing, transmission, or communication of information.
  • “Mode” refers to the manner or method in which an activity is carried out.

Read together, “electronic mode” suggests performing an activity through electronic transmission or processing, not merely using an electronic device as a tool.

This is supported by the Companies Rules 2014, where Rule 2(1)(h) defines “electronic mode” in the context of:

  • Business-to-business and business-to-consumer transactions
  • Data interchange and other digital supply transactions
  • Financial settlements
  • Web-based marketing, etc.

In those contexts, “electronic mode” clearly refers to doing things electronically through networks and platforms, rather than simply creating records on an isolated device.

3.2 Usage within the Income Tax Act 2025 and Rules 2026

Across the Income Tax Act 2025 and Income Tax Rules 2026, the term “electronic mode” is consistently used in situations involving:

  • Electronic filing
  • Electronic communication or service
  • Electronic payment or transmission of information

In other words, the term appears in relation to active processes—how something is done—rather than passive storage.

When the law wants to refer to records as such, it tends to use “electronic form”, not “electronic mode”.