Rule 179 explained: this guide covers what it means, who it applies to, the step-by-step process, documents required, fees, due dates and penalties in India — so you can stay compliant with confidence and avoid costly mistakes.
Rule 179 of the Income-tax Rules, 2026 puts the notice of demand into Form No. 103 — or Form No. 151 after a section 407 order; rule 180 puts the block assessment return into Form ITR-BN.
The two demand notices in rule 179
| Situation | Form |
|---|---|
| The notice of demand under section 289, generally | Form No. 103 |
| The notice of demand under section 289 to be served in pursuance of an order under section 407 | Form No. 151 |
The 1962 parallel is rule 15. Sub-rule (1) is expressly "subject to the provisions of sub-rule (2)", so Form No. 151 is not an alternative the officer may choose — where the demand follows a section 407 order, it is the form that must be used.
The distinction in rule 179 is worth noticing on receipt. A demand on Form No. 151 tells the assessee, on its face, that it flows from an order under section 407 — which is a different origin, and often a different set of remedies, from an ordinary Form No. 103 demand. Reading only the figures and not the form number loses that.
Rule 180 — the block assessment return
Sub-rule (1): the return required under section 294(1)(a), relating to any search initiated under section 247 or requisition made under section 248, shall be in Form ITR-BN and verified in the manner indicated therein. The 1962 parallel is rule 12AE.
| Sl. | Person | Manner of furnishing |
|---|---|---|
| 1 | Company | Electronically under digital signature |
| 2 | Any person other than a company | (A) Electronically under digital signature; or (B) transmitting the data electronically in the return under electronic verification code |
Sub-rule (3): "electronic verification code" has the meaning assigned in rule 165.
So a company has no EVC route for a block return — the same restriction rule 177 imposes on ITR-A. A non-corporate assessee has both. Where rule 179 fixes the form of the demand that may follow, rule 180 fixes the form of the return that precedes it.
The credit claim condition
Sub-rule (4): where a claim of credit of tax payments is made against undisclosed income of the block period, other than by way of self-assessment tax for the block period, the claim of such credits and the allowability thereof shall be subject to the verification by and satisfaction of the Assessing Officer.
The carve-out matters. Tax the assessee pays as self-assessment tax for the block period itself is credited in the ordinary way. Every other credit claimed against undisclosed income — advance tax, TDS, TCS, taxes paid for the individual years now absorbed into the block — is claimed subject to the officer's verification and satisfaction. A block return that assumes those credits will flow through automatically is likely to produce a demand.
The practical consequence is documentary. Every non-self-assessment credit claimed in ITR-BN should be supported at the time of filing — challans, deduction certificates, and a reconciliation showing which year each payment relates to and why it is available against the block period.
The systems mandate
Sub-rule (5): the Principal Director-General of Income-tax (Systems) or Director-General of Income-tax (Systems) shall:
- specify the procedures, formats and standards for ensuring secure capture and transmission of data; and
- be responsible for evolving and implementing appropriate security, archival and retrieval policies in relation to furnishing the return in the manners specified.
This is the same drafting the 2026 Rules use elsewhere for electronic filings — the rule fixes the form and the permitted modes, and delegates the technical specification to the systems directorate.
Worked example
| Facts | Position |
|---|---|
| Demand raised on a regular assessment | Form No. 103 |
| Demand raised in pursuance of a section 407 order | Form No. 151, not 103 |
| Search initiated under section 247 on a company | ITR-BN electronically under digital signature — no EVC option |
| Same search covering an individual partner | ITR-BN under DSC or EVC |
| Requisition made under section 248 | Also brings section 294(1)(a) and ITR-BN into play |
| Self-assessment tax paid for the block period | Credited in the ordinary way |
| TDS of earlier years claimed against block income | Subject to the Assessing Officer's verification and satisfaction |
| Credits claimed with no supporting challans | Likely to be disallowed at verification |
Compliance checklist
- Read the form number on a demand notice — 103 or 151 under rule 179 — and trace its origin.
- For a block return, confirm the trigger is a section 247 search or section 248 requisition.
- Use ITR-BN and verify it as the form indicates.
- For a company, arrange a live digital signature — there is no EVC route.
- For others, choose DSC or the rule 165 electronic verification code.
- Separate self-assessment tax for the block period from every other credit claimed.
- Support every other credit with challans, certificates and a year-wise reconciliation.
- Follow the DGIT (Systems) formats and standards for transmission.
Common mistakes
- Issuing or accepting Form No. 103 where a section 407 order is the source.
- Attempting an EVC filing of a company's block return.
- Assuming earlier-year TDS flows through automatically against block income.
- Filing credit claims without documentation and expecting to produce it later.
- Overlooking a section 248 requisition as a trigger for the block return.