Rule 1 — Short title and commencement. Made under s.533 of the Income-tax Act, 2025.
Rule 1 gives effect to Section 533 of the Income-tax Act, 2025. A rule cannot go beyond the section it serves: where the two seem to differ, the section governs.
The rule names the instrument and fixes the date it begins to operate. Sub-rule (1) provides that these rules may be called the Income-tax Rules, 2026. Sub-rule (2) provides that they shall come into force on the 1st April, 2026.
The opening words above the rule record where the power comes from and how the rules were made: the Central Board of Direct Taxes makes them in exercise of powers conferred by section 533 of the Income-tax Act, 2025 (30 of 2025), by notification G.S.R. 198(E), dated 20-3-2026.
Section 533 gives the Board power to make rules but does not say what a set of rules made under it is to be called, or from when it operates. Sub-rule (1) fixes the citation that every other rule, form and order in this body of law refers back to. Sub-rule (2) fixes one date from which the whole set takes effect, which is later than the date the notification was issued.
| What | Figure | The condition on it | Where |
|---|---|---|---|
| Date the rules come into force | 1st April, 2026 | Applies to the set of rules as a whole | Rule 1(2) |
| Date of the notification making the rules | 20-3-2026 | G.S.R. 198(E), the notification by which the Board made the rules under section 533 | Opening words above rule 1 |
The date of the notification and the date of commencement are not the same. G.S.R. 198(E) is dated 20-3-2026, but sub-rule (2) says the rules shall come into force on the 1st April, 2026, so nothing in this set operates in the eleven days between. Rule 1 is not a source of power either; the power is section 533 of the Act, and every rule in the set has to stand within it. Where a form or an order refers to a requirement "under the Income-tax Rules, 2026", sub-rule (1) is what makes that citation the right one.
The rules are notified on 20-3-2026. An act done on 25 March 2026 is not governed by any rule in this set, because sub-rule (2) brings them into force only on the 1st April, 2026. The same act done on 2 April 2026 is.
You meet it as the citation line, not as an obligation: any notice, form or order that requires something "under the Income-tax Rules, 2026" is using the name sub-rule (1) gives. It also settles any argument about whether a rule in this set could govern something done before the 1st April, 2026.
These rules may be called the Income-tax Rules, 2026.
They shall come into force on the 1st April, 2026.