CHAPTER VIA — DEDUCTIONS TO BE MADE IN COMPUTING TOTAL INCOME
Case Laws & Commentary
SECTION 80B — DEFINITIONS (GROSS TOTAL INCOME)
Case Laws & Commentary (Income-tax Act, 1961 as amended by Finance Act, 2026)
STATUTORY SCHEME (editorial summary — verbatim bare-Act text in the companion Block-1 file)
Marginal heading: Definitions.
Section 80B is the definition section of Chapter VIA. Its principal surviving clause is section 80B(5), which defines 'gross total income' to mean the total income computed in accordance with the provisions of the Act, before making any deduction under Chapter VIA. The gross total income is therefore the figure arrived at after computing income under all heads, after Chapter VI aggregation and set-off / carry-forward of losses and after unabsorbed depreciation, but before the Chapter VIA deductions are given.
A. SECTION COMMENTARY
A.1 Structural position
Section 80B(5) supplies the base on which the whole of Chapter VIA operates. Every deduction under sections 80C to 80U is 'from the gross total income', and section 80A(2) caps the aggregate deductions at the gross total income. The definition therefore does double duty — it fixes both the starting figure and, through section 80A(2), the ceiling.
A.2 Provision taxonomy
The definition has three moving parts: (i) 'total income' — meaning income under section 2(45) computed under the Act; (ii) 'computed in accordance with the provisions of this Act' — importing all set-offs, carry-forwards and allowances; and (iii) 'before making any deduction under this Chapter' — fixing the stage at which the figure is read. The phrase 'computed in accordance with the provisions of this Act' is the litigated expression: it pulls in the loss-set-off and depreciation machinery.
A.3 Core doctrinal themes
The settled theme is that gross total income is a post-set-off, post-depreciation figure: business losses (current and brought forward) and unabsorbed depreciation are absorbed before the gross total income is struck, and a Chapter VIA deduction is possible only if that figure is positive. A connected theme is unit-versus-global computation — the deduction is referable to eligible profits, but the ceiling is the global gross total income, so a profitable eligible unit yields no deduction if the global gross total income is nil.
A.4 Legislative evolution / FA amendment trail
Section 80B was enacted with Chapter VIA from 1 April 1968. Several of its original clauses became redundant as the relief structure changed and were dropped; section 80B(5) is the enduring definition. No change is made by the Finance Act, 2026.
A.5 CA practitioner pointers
(1) Compute gross total income only after Chapter VI set-off and unabsorbed depreciation — this is the Synco Industries discipline. (2) If gross total income is nil or negative, no Chapter VIA deduction is available, however profitable an individual unit. (3) The gross-total-income concept differs from 'book profit' (section 115JB) and from 'total income' after Chapter VIA — keep the three figures distinct on the computation sheet.
B. FA 2026 IMPACT NOTE
Section 80B of the Income-tax Act, 1961 is NOT amended by the Finance Act, 2026. The definition of 'gross total income' in section 80B(5) continues unchanged and governs every Chapter VIA computation for assessment year 2026-27.
C. CASE LAW — CLUSTERED BY ISSUE
Cluster C-1 : 'Gross total income' is a post-set-off, post-depreciation figure
Facts: A multi-division assessee sought Chapter VIA deductions on the profits of its eligible divisions while substantial losses and unabsorbed depreciation of another division remained unabsorbed.
Issue: Whether gross total income under section 80B(5) is computed after set-off of losses and unabsorbed depreciation, and whether a Chapter VIA deduction is available where the resulting figure is nil.
Held: The Supreme Court held that gross total income is computed after adjusting all losses and unabsorbed depreciation; where it is nil, no Chapter VIA deduction can be allowed even if an eligible unit is profitable.
Ratio: Section 80B(5) read with section 80A(2) requires a positive gross total income, struck after set-off of losses and depreciation, as the precondition and ceiling for Chapter VIA deductions.
Relevance: The definitive authority on the content of 'gross total income' and the base/ceiling for the whole Chapter.
Facts: Computation of the section 80P deduction turned on whether brought-forward losses were to be set off in arriving at gross total income.
Issue: Whether brought-forward losses are deducted in computing gross total income for Chapter VIA.
Held: The Supreme Court held that gross total income is the total income computed under the Act, necessarily after set-off of brought-forward losses, before the Chapter VIA deduction.
Ratio: Carry-forward loss set-off is part of computing gross total income under section 80B(5).
Relevance: Applies the section 80B(5) definition in the co-operative-society setting and supports Synco Industries.
Editorial note on sourcing
Editorial scheme summary prepared from the Income-tax Act, 1961 as amended by the Finance Act, 2025, read with the Finance Act, 2026; the verbatim bare-Act text is carried in the companion Block-1 treatise file and is not reproduced here. Case law cited is restricted to reported Supreme Court and High Court authority verified against standard law reports (ITR/SCC/Taxman); citations are given in neutral form. Where a decision arose under a cognate Chapter VIA provision it is flagged as such.
Case Laws & Commentary
SECTION 80B — DEFINITIONS (GROSS TOTAL INCOME)
Case Laws & Commentary (Income-tax Act, 1961 as amended by Finance Act, 2026)
STATUTORY SCHEME (editorial summary — verbatim bare-Act text in the companion Block-1 file)
Marginal heading: Definitions.
Section 80B is the definition section of Chapter VIA. Its principal surviving clause is section 80B(5), which defines 'gross total income' to mean the total income computed in accordance with the provisions of the Act, before making any deduction under Chapter VIA. The gross total income is therefore the figure arrived at after computing income under all heads, after Chapter VI aggregation and set-off / carry-forward of losses and after unabsorbed depreciation, but before the Chapter VIA deductions are given.
A. SECTION COMMENTARY
A.1 Structural position
Section 80B(5) supplies the base on which the whole of Chapter VIA operates. Every deduction under sections 80C to 80U is 'from the gross total income', and section 80A(2) caps the aggregate deductions at the gross total income. The definition therefore does double duty — it fixes both the starting figure and, through section 80A(2), the ceiling.
A.2 Provision taxonomy
The definition has three moving parts: (i) 'total income' — meaning income under section 2(45) computed under the Act; (ii) 'computed in accordance with the provisions of this Act' — importing all set-offs, carry-forwards and allowances; and (iii) 'before making any deduction under this Chapter' — fixing the stage at which the figure is read. The phrase 'computed in accordance with the provisions of this Act' is the litigated expression: it pulls in the loss-set-off and depreciation machinery.
A.3 Core doctrinal themes
The settled theme is that gross total income is a post-set-off, post-depreciation figure: business losses (current and brought forward) and unabsorbed depreciation are absorbed before the gross total income is struck, and a Chapter VIA deduction is possible only if that figure is positive. A connected theme is unit-versus-global computation — the deduction is referable to eligible profits, but the ceiling is the global gross total income, so a profitable eligible unit yields no deduction if the global gross total income is nil.
A.4 Legislative evolution / FA amendment trail
Section 80B was enacted with Chapter VIA from 1 April 1968. Several of its original clauses became redundant as the relief structure changed and were dropped; section 80B(5) is the enduring definition. No change is made by the Finance Act, 2026.
A.5 CA practitioner pointers
(1) Compute gross total income only after Chapter VI set-off and unabsorbed depreciation — this is the Synco Industries discipline. (2) If gross total income is nil or negative, no Chapter VIA deduction is available, however profitable an individual unit. (3) The gross-total-income concept differs from 'book profit' (section 115JB) and from 'total income' after Chapter VIA — keep the three figures distinct on the computation sheet.
B. FA 2026 IMPACT NOTE
Section 80B of the Income-tax Act, 1961 is NOT amended by the Finance Act, 2026. The definition of 'gross total income' in section 80B(5) continues unchanged and governs every Chapter VIA computation for assessment year 2026-27.
C. CASE LAW — CLUSTERED BY ISSUE
Cluster C-1 : 'Gross total income' is a post-set-off, post-depreciation figure
Synco Industries Ltd. v. Assessing Officer (2008) 299 ITR 444 (SC)
Facts: A multi-division assessee sought Chapter VIA deductions on the profits of its eligible divisions while substantial losses and unabsorbed depreciation of another division remained unabsorbed.
Issue: Whether gross total income under section 80B(5) is computed after set-off of losses and unabsorbed depreciation, and whether a Chapter VIA deduction is available where the resulting figure is nil.
Held: The Supreme Court held that gross total income is computed after adjusting all losses and unabsorbed depreciation; where it is nil, no Chapter VIA deduction can be allowed even if an eligible unit is profitable.
Ratio: Section 80B(5) read with section 80A(2) requires a positive gross total income, struck after set-off of losses and depreciation, as the precondition and ceiling for Chapter VIA deductions.
Relevance: The definitive authority on the content of 'gross total income' and the base/ceiling for the whole Chapter.
CIT v. Kotagiri Industrial Co-operative Tea Factory Ltd. (1997) 224 ITR 604 (SC)
Facts: Computation of the section 80P deduction turned on whether brought-forward losses were to be set off in arriving at gross total income.
Issue: Whether brought-forward losses are deducted in computing gross total income for Chapter VIA.
Held: The Supreme Court held that gross total income is the total income computed under the Act, necessarily after set-off of brought-forward losses, before the Chapter VIA deduction.
Ratio: Carry-forward loss set-off is part of computing gross total income under section 80B(5).
Relevance: Applies the section 80B(5) definition in the co-operative-society setting and supports Synco Industries.
Editorial note on sourcing
Editorial scheme summary prepared from the Income-tax Act, 1961 as amended by the Finance Act, 2025, read with the Finance Act, 2026; the verbatim bare-Act text is carried in the companion Block-1 treatise file and is not reproduced here. Case law cited is restricted to reported Supreme Court and High Court authority verified against standard law reports (ITR/SCC/Taxman); citations are given in neutral form. Where a decision arose under a cognate Chapter VIA provision it is flagged as such.