Chapter XIII - Determination of Tax in Special Cases
Section 228
Section 228: relevant shipping income and exclusion from book profit
Section 228 defines "relevant shipping income" - the income of a tonnage tax company that is not chargeable to tax because it is already captured through the notional tonnage income computed under Section 227 - and sets rules for allocating costs, related-party transactions and book profit for such companies.
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This article is for general information. Refer to the Income-tax Act, 2025 as amended by the Finance Act, 2026 and the Taxation and Other Laws (Amendment) Act, 2026 for the official provisions. If you need professional advice for your situation, contact Bizeneed.
Statutory text
Bare law
(1) For the purposes of this Part, the relevant shipping income of a tonnage tax company means— (a) its profits from core activities referred to in sub-section (3); and (b) its profits from incidental activities referred to in sub-section (7).
(2) Where the aggregate of all such incomes specified in sub-section (1)(b) exceeds 0.25% of the turnover from core activities referred to in sub-section (3), such excess shall not form part of the relevant shipping income for the purposes of this Part and shall be taxable under the other provisions of this Act.
(3) The core activities of a tonnage tax company shall be— (a) its activities from operating qualifying ships; and (b) other ship-related or inland vessel related activities, as the case may be, as follows:— (i) shipping contracts in respect of— (A) earning from pooling arrangements; (B) contracts of affreightment; (ii) specific shipping trades, being— (A) on-board or on-shore activities of passenger ships or inland vessels comprising of fares and food and beverages consumed on-board; (B) slot charters, space charters, joint charters, feeder services and container box leasing of container shipping.
(4) For the purposes of sub-section (3)(b)(i),— (a) “pooling arrangement” means an agreement between two or more persons for providing services through a pool or operating one or more ships or inland vessels as the case may be, and sharing earnings or operating profits on the basis of mutually agreed terms; (b) “contract of affreightment” means a service contract under which a tonnage tax company agrees to transport a specified quantity of specified products at a specified rate, between designated loading and discharging ports over a specified period.
(5) The Central Government, if it considers necessary or expedient so to do, may, by notification, exclude any activity referred to in sub-section (3)(b) or prescribe the limit up to which such activities shall be included in the core activities for the purposes of this section.
(6) Every notification issued under this Part shall be laid, as soon as may be after it is issued, before each House of Parliament, while it is in session for a total period of thirty days which may be comprised in one session or in two or more successive sessions, and if, before the expiry of the session immediately following the session or the successive sessions aforesaid, both Houses agree in making any modification in the notification, or both Houses agree that the notification should not be issued, the notification shall thereafter have effect only in such modified form or be of no effect; so, however, that any such modification or annulment shall be without prejudice to the validity of anything previously done under that notification.
(7) The incidental activities shall be the activities which are incidental to the core activities and as may be prescribed for the purpose.
(8) Where a tonnage tax company operates any ship or inland vessels as the case may be, which is not a qualifying ship, the income attributable to operating such non-qualifying ship shall be computed under other provisions of this Act.
(9) Where any goods or services held for the purposes of— (a) tonnage tax business are transferred to any other business carried on by a tonnage tax company; or (b) any other business carried on by such tonnage tax company are transferred to the tonnage tax business, and, in either case, the consideration, if any, for such transfer as recorded in the accounts of the tonnage tax business does not correspond to the market value of such goods or services as on the date of the transfer, then, the relevant shipping income under this section shall be computed as if the transfer, in either case, had been made at the market value of such goods or services as on that date.
(10) In sub-section (9), “market value”, in relation to any goods or services, means the price that such goods or services would ordinarily fetch on sale in the open market.
(11) Where, in the opinion of the Assessing Officer, the computation of the relevant shipping income in the manner specified in sub-section (9) presents exceptional difficulties, he may compute such income on such reasonable basis as he considers fit.
(12) Where it appears to the Assessing Officer that, owing to the close connection between the tonnage tax company and any other person, or for any other reason, the course of business between them is so arranged that the business transacted between them produces to the tonnage tax company more than the ordinary profits which might be expected to arise in the tonnage tax business, the Assessing Officer shall, in computing the relevant shipping income of the tonnage tax company for the purposes of this Part, take income as may reasonably be deemed to have been derived therefrom.
(13) In this Part, in case the relevant shipping income of a tonnage tax company is a loss, then, such loss shall be ignored for the purposes of computing tonnage income.
(14) Where a tonnage tax company also carries on any business or activity other than the tonnage tax business, common costs attributable to the tonnage tax business shall be determined on a reasonable basis.
(15) Where any asset, other than a qualifying ship, is not exclusively used for the tonnage tax business by the tonnage tax company, depreciation on such asset shall be allocated between its tonnage tax business and other business on a fair proportion to be determined by the Assessing Officer, having regard to the use of such asset for the purposes of the tonnage tax business and for the other business.
(16) The book profit or loss derived from the activities of a tonnage tax company, referred to in sub-section (1), shall be excluded from the book profit of the company for the purposes of section 206(1)(c).
Introduction
Section 228 identifies the shipping income that belongs in the tonnage-tax scheme and what is excluded. It distinguishes core, incidental and non-qualifying activities.
The section also addresses related-party transactions, common costs and book-profit computation.
Key takeaways
Core plus incidental income
Relevant shipping income includes profits from the qualifying core activities and the permitted incidental activities.
Incidental ceiling and exclusions
The section limits incidental activity income and allows notification of exclusions from listed core activities.
Internal transfers need market value
Non-market prices for transfers between the tonnage business and another business are adjusted under the section.
What makes up relevant shipping income
Relevant shipping income is the sum of a tonnage tax company's profits from "core activities" and its profits from "incidental activities". Where the aggregate of incidental-activity income exceeds 0.25% of turnover from core activities, the excess does not form part of relevant shipping income and is instead taxable under the Act's other provisions.
Core activities
Core activities are the company's activities from operating qualifying ships, plus other ship or inland-vessel related activities such as:
- Earnings from pooling arrangements (agreements between two or more persons to operate ships/inland vessels through a pool and share earnings or operating profits on mutually agreed terms)
- Contracts of affreightment (service contracts to transport a specified quantity of goods at a specified rate between designated ports over a specified period)
- On-board or on-shore activities of passenger ships or inland vessels, comprising fares and food/beverages consumed on board
- Slot charters, space charters, joint charters, feeder services and container box leasing of container shipping
Incidental activities and non-qualifying ships
Incidental activities are those incidental to the core activities, as may be prescribed. The Central Government may, by notification, exclude any core activity listed above or prescribe limits up to which such activities are included as core activities - such notifications must be laid before each House of Parliament for thirty days, subject to modification or annulment by both Houses.
Where a tonnage tax company operates a ship or inland vessel that is not a qualifying ship, income attributable to that non-qualifying vessel is computed under the Act's other provisions, not under this Part.
Related-party and internal transfer rules
If goods or services are transferred between the tonnage tax business and any other business of the same company at a value that does not correspond to market value, relevant shipping income is computed as if the transfer had occurred at market value (the price the goods or services would ordinarily fetch in the open market).
If the Assessing Officer finds computing relevant shipping income under this market-value rule presents exceptional difficulty, he may compute it on any reasonable basis he considers fit.
Where the connection or arrangement described in section 228(12) produces more than ordinary profits in the tonnage-tax business, the Assessing Officer shall use the income that may reasonably be deemed to have been derived for the purposes of this Part.
Losses, common costs and book profit
If relevant shipping income for a tax year works out to a loss, that loss is ignored for the purpose of computing tonnage income - it cannot reduce tonnage income.
Where a tonnage tax company also carries on other business, common costs attributable to the tonnage tax business are determined on a reasonable basis, and depreciation on any non-ship asset not exclusively used for the tonnage tax business is allocated by the Assessing Officer on a fair proportion, having regard to actual use.
The book profit or loss derived from the activities covered by this section is excluded from the company's book profit for the purposes of Section 206(1)(c) (the MAT-type book-profit provision).
Current scope includes specified inland-vessel activity
The Finance Act, 2026 added “or inland vessels” to subsection (3)(b)(ii)(A) with effect from 1 April 2026. The clause covers the specified on-board or on-shore passenger activity; it should be read with the qualifying-ship and tonnage-tax conditions rather than treated as a general exemption for every inland-vessel receipt.
Step-by-step flow for working out relevant shipping income under Section 228
- 1
Identify profits from core activities
Core activities are operating qualifying ships and the ship-related activities in Section 228(3)(b): pooling arrangements, contracts of affreightment, and the listed passenger and container trades. The Central Government may by notification exclude an activity in Section 228(3)(b) or limit it (Section 228(5)).
- 2
Identify profits from incidental activities
Incidental activities are those incidental to core activities and prescribed by rules (Section 228(7)).
- 3
Do incidental profits exceed 0.25% of the turnover from core activities?
- Yes: The excess is not relevant shipping income and is taxed under the other provisions of the Act (Section 228(2)).
- No: All incidental profits are part of relevant shipping income.
- 4
Make the required adjustments
Income from non-qualifying ships is computed under the other provisions (Section 228(8)). Transfers between the tonnage tax business and other businesses are taken at market value (Section 228(9) and (10)). The Assessing Officer may adjust under Section 228(11) and (12). Common costs and shared-asset depreciation are allocated as Section 228(14) and (15) provide.
- 5
Apply the result
A loss in relevant shipping income is ignored for tonnage income (Section 228(13)). The book profit or loss from these activities is excluded from book profit for Section 206(1)(c) (Section 228(16)).
Practical checklist
Do
- Classify each receipt as core, incidental or non-qualifying shipping income.
- Keep allocation records for common expenses and related-party transfers.
Avoid
- Treat all income of a shipping company as tonnage-tax income.
Illustrative example
Worked example: the 0.25% cap on incidental profits
Hypothetical facts (illustration only, not a real taxpayer): A tonnage tax company has turnover from core activities of ₹400 crore for the tax year. Its profits from prescribed incidental activities are ₹1.3 crore. All figures are assumed; the 0.25% limit is from Section 228(2).
Cap
0.25% × ₹400 crore = ₹1 crore.
Compare
Incidental profits of ₹1.3 crore exceed the cap by ₹1.3 crore − ₹1 crore = ₹0.3 crore, that is ₹30 lakh.
Within relevant shipping income
₹1 crore of incidental profits stays in relevant shipping income, together with the profits from core activities.
Excess
The ₹30 lakh is taxed under the other provisions of the Act (Section 228(2)).
Outcome
- Only ₹1 crore of the incidental profits is covered by the tonnage tax scheme; ₹30 lakh is taxed normally.
- Which activities count as incidental depends on the rules; Section 228 does not list them.
Frequently asked questions
Is all of a tonnage tax company's income tax-exempt?
No - only "relevant shipping income" (core plus capped incidental activities) is excluded from tax because it is captured through tonnage income under Section 227. Income from non-qualifying ships, or incidental income beyond the 0.25% cap, is taxed under the Act's other provisions.
What is the cap on incidental-activity income?
Incidental-activity income counting toward relevant shipping income is capped at 0.25% of turnover from core activities; anything above that is taxed separately.
Does a loss in relevant shipping income reduce the company's tonnage income?
No - Section 228(13) states that if relevant shipping income is a loss, that loss is simply ignored in computing tonnage income.
Need help applying this provision to your situation?
Talk to our tax team about tonnage tax scheme incomeLast updated 10 October 2026