Section 73 Income Tax Act 1961: Speculation Business Loss
Section 73 of the Income-tax Act, 1961 governed the set-off and carry forward of losses from a speculation business. From 1 April 2026, the Income-tax Act, 2025 applies to tax years beginning on or after that date, and the corresponding rule is contained in Section 113.
What is a speculation business?
Under the Income-tax Act, 1961, Section 43(5) defined a "speculative transaction" broadly as a contract for purchase or sale of a commodity, including stocks and shares, that is settled otherwise than by actual delivery or transfer. The provision also contained specified exclusions, including qualifying hedging, derivatives and commodity derivative transactions subject to statutory conditions.
Where speculative transactions were of such a nature as to constitute a business, that speculation business was treated as distinct and separate from other business for computation purposes.
Section 73 of the Income-tax Act, 1961
For years governed by the Income-tax Act, 1961, Section 73 imposed a ring-fencing rule for speculation losses. In practical terms, a loss from speculation business could not be adjusted against ordinary business income or income under another head.
| Rule | Effect under old Section 73 |
|---|---|
| Set-off | A speculation business loss could be set off only against profits and gains of another speculation business. |
| Carry forward | An unabsorbed speculation loss could be carried forward, subject to the other applicable provisions of Chapter VI. |
| Future set-off | The carried-forward loss could be set off against profits and gains of speculation business in a later assessment year. |
| Time limit | The loss could not be carried forward for more than four assessment years immediately succeeding the assessment year in which it was first computed. |
| Depreciation and scientific research allowance | Old Section 73(3) applied the ordering rule in Section 72(2) to speculation business. |
Current rule: Section 113 of the Income-tax Act, 2025
For tax years beginning on or after 1 April 2026, Section 113 of the Income-tax Act, 2025 is the corresponding provision. The core treatment remains substantially the same: speculation loss is ring-fenced and is set off only against profits and gains of speculation business.
An unabsorbed speculation business loss is carried forward to later tax years and remains available only against speculation business profits. The maximum carry-forward period remains four tax years immediately succeeding the tax year in which the loss was first computed. The provision also gives priority to the unabsorbed speculation business loss before specified carried-forward allowances.
Share trading by companies and deemed speculation business
The law contains a special deeming rule for certain companies engaged in purchase and sale of shares of other companies. Under the current Section 113 framework, such share dealing can be treated as speculation business to the relevant extent, subject to statutory exclusions.
The exclusion covers, among others, a company whose gross total income consists mainly of income chargeable under specified non-business heads, and a company whose principal business is trading in shares, banking, or granting loans and advances. The precise facts and the applicable tax year should therefore be checked before treating a company's share-trading loss as a speculation loss.
What happens to Section 73 losses from before 1 April 2026?
The Income-tax Act, 2025 repealed the Income-tax Act, 1961, but Section 536 preserves specified rights, liabilities, proceedings and brought-forward losses. Eligible speculation business losses relating to tax periods before 1 April 2026 continue to retain their character and may be set off and carried forward in the manner preserved by the transition provisions, without restarting the original carry-forward period.
Accordingly, an old Section 73 loss does not become an unrestricted business loss merely because the new Act has commenced. Its original nature and the applicable four-year limit remain relevant.
Simple example
Suppose an assessee has a speculation business loss of Rs. 3,00,000 and ordinary business profit of Rs. 5,00,000. The speculation loss cannot ordinarily be set off against the ordinary business profit. If the assessee also has Rs. 1,20,000 of speculation business profit, the loss may be set off against that speculation profit, subject to the applicable statutory conditions, and the eligible balance may be carried forward within the prescribed period.
Practical points before claiming carry forward
The nature of the transaction, whether it falls within the statutory meaning of speculation, the separate computation of speculation business, timely compliance for carrying forward losses, and the remaining statutory carry-forward period should all be checked. For a loss originating before 1 April 2026, the transition and savings provisions of the Income-tax Act, 2025 should also be considered.
Updated: 28 September 2026. This page is a general legal and tax information resource. Tax treatment depends on the facts, the relevant tax year, and amendments applicable to that period.