Section 300 · Assessment
Section 300 of the Income-tax Act, 2025 — Application of Other Provisions to Block Assessment
By CA Rajat Agrawal
Updated 05 Jul 2026
Chapter XVI
📜 What the law says — Section 300, Income-tax Act 2025
300. Save as otherwise provided in this part, all other provisions of this Act shall
apply to assessment made under this part.
Interpretation.
In plain language
What Section 300 actually says
The bare text is short and powerful: "Save as otherwise provided in this part, all other provisions of this Act shall apply to assessment made under this part." In plain English, Section 300 is a saving clause (also called a "machinery" clause). It sits inside the block-assessment part of the Income-tax Act, 2025 — the special code (Sections 292 to 301) that governs how the tax department assesses undisclosed income found during a search under Section 247 or requisition under Section 248.
- Block assessment is a self-contained mini-code. It has its own procedure (Section 294), its own time limit (Section 296), its own flat tax rate (Section 297) and its own definitions (Section 301).
- But no mini-code can cover everything. It does not repeat rules for issuing a notice of demand, charging interest for late payment, recovery of tax, refunds, appeals, revision, rectification, penalties or prosecution.
- Section 300 fills every one of those gaps. It says: for anything the block-assessment part is silent on, fall back on the ordinary provisions of the whole Act. But wherever the block part has said something different ("save as otherwise provided"), the block part wins.
Who it applies to
Section 300 applies to any person whose case is being assessed under the block-assessment scheme — that is, a person searched under Section 247, a person whose assets/books were requisitioned under Section 248, and "other persons" whose undisclosed income surfaces during that search (Section 295). It is not a section a normal salaried taxpayer or ordinary business filer will ever "use" directly; it is the plumbing that lets the block regime borrow the rest of the Act.
Which ordinary provisions get pulled in
- Notice of demand and recovery — once undisclosed income is taxed, a demand is raised and recovered using the general recovery machinery, because the block part contains no separate recovery code.
- Interest — interest for default in payment of tax and interest on excess refunds apply through Section 300, so a block-assessment demand carries interest like any other demand.
- Penalty and prosecution — general penalty for under-reporting/misreporting and prosecution provisions attach to block assessments through this clause, subject to anything special in the block part.
- Appeals, revision, rectification — a person unhappy with a block assessment order can appeal to the Commissioner (Appeals)/Tribunal and seek rectification of mistakes, because the appellate and rectification machinery of the Act is imported.
- Refunds, TDS/TCS credit, advance tax adjustment — credits and refunds are computed using the general provisions.
How it interacts with the rest of the block scheme
The block scheme opens with a non-obstante (overriding) clause — it says undisclosed income of the block period is assessed "notwithstanding anything in the Act". Section 300 is deliberately read together with that override. The two are two sides of one coin:
- The overriding clause switches OFF ordinary provisions where the block code has its own rule (rate, period, procedure, time limit).
- Section 300 switches them back ON for everything else. So the department cannot say "block assessment is special, therefore no appeal / no interest / no recovery rules apply" — Section 300 stops that argument.
Practical implications for a taxpayer
- You keep your appeal rights. A block-assessment order is appealable just like a regular Section 271 assessment order — thanks to Section 300.
- Interest and penalty will follow. Do not assume the flat 60% under Section 297 is the end of the story; interest for late payment and penalty/prosecution can ride on top through Section 300.
- Recovery is real and immediate. The same coercive recovery tools (attachment, garnishee, etc.) apply.
- It settles disputes. Historically, many litigation questions ("does interest apply to block assessment?", "can this order be revised?") were answered using the 1961 equivalent, Section 158BH. Section 300 carries that settled position forward.
1961 vs 2025 — the lineage
Section 300 is the direct successor of Section 158BH of the Income-tax Act, 1961 ("Application of other provisions of this Act"), which sat at the end of the old block-assessment code in Chapter XIV-B. The wording and function are the same — a general saving clause — so the large body of case law built around Section 158BH continues to guide how Section 300 is read. The 2025 Act simply re-numbered and re-drafted it in simpler language, effective 1 April 2026.
💡 Example
Worked example 1 — interest riding on a block demand. Suppose a search under Section 247 uncovers undisclosed income of ₹40,00,000 across the block period for Mr. Arjun. Section 297 taxes this at the flat block rate of 60%, giving ₹24,00,000 of tax. Section 297 also bars any deduction, set-off of loss or exemption against this income. Now, Section 297 says nothing about interest for delayed payment. Because of Section 300, the ordinary interest provisions apply — so if Arjun delays payment of the ₹24,00,000 demand, interest is charged on top, exactly as it would be on a normal assessment demand. Without Section 300, there would be a gap and the department could not levy that interest.
Worked example 2 — appeal rights. The Assessing Officer completes Arjun's block assessment and passes the order within 12 months from the end of the quarter in which the last search authorisation was executed (the Section 296 time limit). Arjun believes ₹15,00,000 of the ₹40,00,000 was actually disclosed income already taxed. The block part has no appeal provision of its own. Section 300 imports the Act's general appeal machinery, so Arjun files an appeal before the Commissioner (Appeals) challenging the ₹15,00,000 — the same route available to any other assessee.
A relatable story. Think of the block-assessment scheme like a specialised "express counter" at a bank set up only for one purpose — settling accounts after a locker raid. The express counter has its own rules: a fixed fee (60% rate), a fixed deadline, and a fixed form. But the counter does not have its own security guards, its own complaint desk, or its own cashier for refunds. Section 300 is the notice on the wall that says: "For everything not printed on this counter's rulebook, the bank's normal rules apply." That single line is what keeps interest, penalties, recovery, refunds and the complaint (appeal) desk all working for the express counter too.
| Aspect | Governed by the block part itself | Borrowed via Section 300 (general Act provisions) |
|---|
| Procedure for assessment | Yes — Section 294 (notice, return for block period, determination of undisclosed income) | — |
| Rate of tax | Yes — Section 297 (flat 60%, no deduction/exemption/set-off) | — |
| Time limit to complete | Yes — Section 296 (12 months from end of quarter of last search authorisation) | — |
| Definitions (block period, undisclosed income) | Yes — Section 301 (block period = 6 tax years + part period up to date of search) | — |
| Notice of demand and recovery of tax | — | Yes — via Section 300 |
| Interest for late payment / on refunds | — | Yes — via Section 300 |
| Penalty and prosecution | — | Yes — via Section 300 (subject to block-specific rules) |
| Appeals, revision, rectification | — | Yes — via Section 300 |
| Refunds, TDS/TCS credit, advance-tax adjustment | — | Yes — via Section 300 |
Related sections
Section 294 — Procedure for block assessment Section 295 — Undisclosed income of any other person Section 296 — Time limit for completing block assessment Section 297 — Tax on undisclosed income (flat 60% rate) Section 301 — Definitions: block period and undisclosed income Section 247 — Search and seizure that triggers block assessment
Frequently asked questions
What is Section 300 of the Income-tax Act, 2025 in simple terms?
It is a saving clause for block assessment. It says that except where the block-assessment part provides its own special rule, all other provisions of the Act apply to a block assessment too. It fills the gaps the block scheme leaves open.
Which section of the old Income-tax Act, 1961 does Section 300 replace?
It replaces Section 158BH of the 1961 Act, titled 'Application of other provisions of this Act', which was the saving clause at the end of the old Chapter XIV-B block-assessment code. The function is identical.
Can I appeal a block assessment order?
Yes. The block part has no appeal provision of its own, so Section 300 imports the Act's general appeal machinery. You can appeal a block assessment order just like any regular assessment order.
Does interest apply on a block assessment demand?
Yes. Section 297 fixes only the tax rate (a flat 60%). Interest for late payment is not part of the block code, so it applies through Section 300, on top of the tax.
If block assessment overrides the whole Act, why is Section 300 needed?
The block scheme's overriding clause switches off ordinary provisions only where the block code has its own rule. Section 300 switches everything else back on, so recovery, interest, penalty, appeals and refunds still work. The two clauses are read together.
Does Section 300 apply to a person who was not searched?
Yes. It applies to every assessment made under the block-assessment part, including an 'other person' whose undisclosed income surfaces during someone else's search and is assessed under Section 295.
From when is Section 300 effective?
The Income-tax Act, 2025 (as amended by the Finance Act, 2026) is effective from 1 April 2026, so Section 300 applies to block assessments arising from searches and requisitions on or after that date.
C
CA Rajat Agrawal
Chartered Accountant, EaseValue · Reviewed 05 Jul 2026
This explainer is prepared and reviewed by EaseValue's tax team, based on the text of the Income-tax Act, 2025 (as amended by the Finance Act, 2026).
Disclaimer: This page explains the law in general terms for education and is not professional advice. The Income-tax Act, 2025 takes effect from 1 April 2026; provisions, thresholds and interpretations may change. Please confirm your specific position with our team before acting.
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