UNIT 13: TERMINATION OF OBLIGATIONS

Define performance (solutio) and state its primary legal effect

Performance (solutio) is the primary, natural, and intended way a contract comes to an end. It occurs when a party properly, completely, and timeously carries out the exact duties promised in the agreement.

Contractual duties create a vinculum iuris—a temporary personal legal tie holding the debtor to the creditor.

Proper performance completely dissolves this legal tie, releasing the debtor from their duty and extinguishing the creditor's personal right to claim.

Explain the dual legal character of performance

Juridically, performance has a dual legal character:

1. Bilateral Juristic Act: In most agreements, performance requires the mutual cooperation of both parties (for example, the debtor must tender payment and the creditor must accept it).

2. Unilateral Juristic Act: Where performance requires no active participation from the creditor (such as fulfilling a promise not to trade in a specific area), it operates as a unilateral act performed solely by the debtor.

State the general rule on who may render performance

As a general rule under South African common law, performance can be legally rendered by the debtor, their authorized agent, or an independent third party acting on the debtor's behalf.

Remarkably, a third party's payment remains legally valid and extinguishes the debt even if the debtor is unaware of the payment or expressly objects to it.

Explain the delectus personae exception to who may perform

The primary exception to third-party performance is the doctrine of delectus personae (choice of a specific person).

Where promised performance involves unique personal skills, artistic talent, or expert qualifications, the law presumes the creditor selected that debtor specifically for their personal attributes.

In such cases, performance cannot be delegated and must be rendered strictly by the designated debtor in person, as affirmed in University of Johannesburg v Auckland Park Theological Seminary.

 State to whom performance must be rendered

To validly extinguish a debt, performance must be rendered directly to the creditor, their legally authorized agent, or a third party specifically designated in the contract to receive payment (known as a solutionis causa adiectus).

 State the legal effect of rendering performance to an unauthorized third party

Rendering performance to an unauthorized third party does not discharge the debt as a matter of law, meaning the debtor remains liable to the creditor and risks paying twice.

The debtor will only be released if the creditor subsequently ratifies (retroactively approves) the unauthorized payment, or if the creditor actually received a financial benefit from it under the rules of unjustified enrichment.

State the rules on performance content and completeness

A debtor is legally bound to deliver the exact performance promised in the contract. Under the rule of completeness, a creditor cannot be forced to accept a substitute performance (aliud) or partial performance, unless the contract explicitly allows for installments or the law requires it.

State the rules governing payment by cheque or electronic funds transfer (EFT)

Payment tendered by cheque or electronic funds transfer (EFT) operates as a conditionally valid payment. It only achieves full legal effect and discharges the debt when the funds are irrevocably cleared and credited into the creditor's bank account.

State the rules on time and place of performance

Performance must occur at the agreed place or a reasonable location determined by the nature of the debt.

Under the rule dies interpellat pro homine (the date reminds on behalf of the person), the arrival of an agreed due date automatically places a non-performing debtor in default (mora debitoris) without requiring any demand.

If no date was fixed, performance is due within a reasonable time after the creditor issues a formal demand (interpellatio).

Explain the debtor's and creditor's rights of payment allocation (appropriation)

Where a debtor owes several distinct debts to the same creditor and makes a payment that cannot cover all of them, the debtor has the primary right to state which debt is being paid at the exact time of payment.

If the debtor remains silent, the creditor has a secondary right to allocate the payment immediately, provided the allocation is equitable and communicated to the debtor.

 State the common law default order for allocating payments

If neither party allocates a payment across multiple debts, the law allocates it automatically in this exact order:

1. To clear accrued interest before reducing capital.

2. To due and enforceable debts over future or non-due debts.

3. To more burdensome (onerous) debts (such as interest-bearing or secured debts) over less onerous ones.

4. To older debts before newer debts.

5. Split proportionately (pro rata) across debts of equal age and burden.

Define release and waiver (pactum de non petendo) and state its requirements

A release or waiver (pactum de non petendo) is a bilateral agreement in terms of which a creditor voluntarily surrenders or abandons their personal right against the debtor, thereby extinguishing the debtor's duty to perform.

As explained in Alfred McAlpine & Son v Transvaal Provincial Administration, establishing a valid waiver requires proof of clear objective consensus showing that the creditor fully appreciated their right and actively intended to surrender it.

 Explain the impact of a non-variation clause on a waiver

Where a contract contains a formal non-variation clause or written waiver requirement (a Shifren clause), any purported oral or tacit waiver is an absolute legal nullity, as affirmed in SA Sentrale Ko-op Graanmaatskappy Bpk v Shifren and De Villiers NNO v BOE Bank Ltd.