What are the mutual rights and liabilities of partners?

The Governing Principle: Freedom of Contract under Section 11

Section 11(1) provides that, subject to the provisions of the Act, the mutual rights and duties of partners may be determined by contract between them, express or implied by a course of dealing, and such a contract may be varied at any time with the consent of all partners. Section 11(2) carves out a notable exception to the ordinary law of contract by permitting partners to agree that a partner shall not carry on any business other than that of the firm while he remains a partner, notwithstanding Section 27 of the Indian Contract Act, 1872, which otherwise voids agreements in restraint of trade. This freedom of contract, however, does not extend to the mandatory duties of good faith and indemnity for fraud under Sections 9 and 10.

General Duty of Good Faith: Section 9

Section 9 lays the foundation for all mutual dealings by requiring partners to carry on the business to the greatest common advantage, to be just and faithful to each other, and to render true accounts and full information affecting the firm to any partner or his legal representative. This duty demands uberrimae fidei, or utmost good faith, a standard considerably higher than ordinary commercial honesty. This duty of disclosure was illustrated in Gordon v. Holland, where a partner who covertly repurchased firm property sold to a third party, without disclosing this to his co-partners, was compelled to account for his profit, and similarly in Kuhlirz v. Lambert Bros Ltd, where a partner selling his own goods to the firm at an inflated price without revealing his own prior cheap purchase was held liable to account.

Mandatory Duty to Indemnify for Fraud: Section 10

Section 10 makes every partner liable to indemnify the firm for any loss caused by his fraud in conducting its business, a duty that is mandatory and cannot be excluded by agreement, unlike the duty concerning mere wilful neglect under Section 13(f). While innocent partners remain liable to third parties for a co-partner's fraud, Section 10 gives them a corresponding right to recover from the fraudulent partner, as recognised in Thomas v. Atherton.

Rights and Duties in Conducting the Business: Section 12

Section 12 governs management, providing that, subject to contract, every partner has a right to take part in the conduct of the business, is bound to attend diligently to his duties, may have ordinary differences settled by majority (though no change in the nature of the business may be made without unanimous consent), and has a right to inspect and copy the firm's books. A partner who neglects his duty of diligent attendance, leaving the burden of management to others, gives them a right to compensation. The Supreme Court has clarified that the majority's power under clause (c) is confined to ordinary matters arising in the course of exercising the right under clause (a), and cannot bind the minority on matters of vital importance.

Rights to Profit and Liability for Loss

Where the partnership deed is silent, partners are presumed to share both profits and losses equally, though they remain free to agree otherwise — for instance, fixing a salaried partner's return irrespective of fluctuations in the firm's fortunes, or excusing certain partners from bearing losses altogether. This flexibility was upheld in Raghunandan Nanu v. Hormasjee Benzoojee, where a partner entitled only to a fixed monthly sum, and not liable for losses, was nonetheless held to be a genuine partner, since partners may agree to share profits in whatever manner they choose

Application of Firm Property: Section 15

Section 15 provides that, subject to contract, the property of the firm must be held and used exclusively for the purposes of the business. A mortgage of partnership property executed by one partner for his own private benefit has accordingly been held invalid, and any partner who diverts firm property to personal use must account to the firm for the resulting profit, since a contract of partnership is uberrimae fidei.

Liability to Account for Secret Profits: Section 16

Section 16 is central to the mutual liabilities of partners. It provides that if a partner derives any profit for himself from a transaction of the firm, or from the use of its property, business connection, or name, he must account for and pay that profit to the firm; and if he carries on a competing business of the same nature, he must similarly account for all profits made in it. The Act's own illustrations bring this to life: where C, without the knowledge of A and B, secures for himself the lease of the premises where the firm's business is carried on, A and B are entitled to share in the benefit of that lease if they wish; and where a London merchant secretly pays commission to a partner in return for directing consignments to him, that partner must account to the firm for the payment received. The Privy Council in Ahmad Musaji v. Hashim Ebrahim confirmed that this duty to account survives even after dissolution, directing a partner who had retained and used firm assets for his own benefit to account for them with interest. The English case Aas v. Benham marks the outer limit of this liability, holding that a partner who used certain information gained as a partner to assist in an entirely non-competing shipbuilding venture was not liable to account, since the true test is whether the other business competes with the firm's business, not merely the source of information used.

Continuity of Mutual Rights After Change in Constitution: Section 17

Section 17(a) preserves mutual rights and duties, so far as possible, in their pre-existing form where a change occurs in the firm's constitution, such as the introduction of a new partner following a death. This was applied where, upon a partner's death, his son stepped into his place and continued the business with the surviving partner without any fresh agreement; the son was held entitled to the same share his father had held. Sections 17(b) and (c) extend the same principle of continuity respectively to firms continuing business beyond a fixed term, and firms carrying out further undertakings beyond those originally contemplated.

Illustration Bringing the Provisions Together

Suppose A, B and C are partners in an electronics trading firm, sharing profits equally, with the deed silent on losses. If A neglects his duties under Section 12(b), B and C acquire a right to compensation for the added burden of management. If C secretly earns a commission from a supplier for routing the firm's purchase orders through him, A and B can invoke Section 16(a) to compel him to account for that profit. If C additionally opens a competing electronics shop nearby while still a partner, Section 16(b) entitles A and B to claim the profits of that venture as well, and any fraud committed by C in falsifying the firm's accounts to conceal these dealings would trigger the non-excludable liability to indemnify under Section 10.

Concluding Observations

The scheme of Sections 9 to 17 thus creates a body of reciprocal mutual rights and liabilities: freedom of contract under Section 11 allows partners to structure most of their internal relationship as they see fit, but this freedom operates within an outer boundary of mandatory good faith and honesty, and is supplemented by default rules addressing management, property, profits, secret gains, and continuity through changes in the firm — all designed to give practical effect to the deeply fiduciary character that the law attributes to the partnership relationship.