Civil Law Act (Cap. 43): Primary legislation requiring guarantees to be in writing and signed. Section 6 is particularly relevant as it establishes the fundamental framework for contractual obligations in guarantees.

Contract Law Principles: Common law principles governing contract formation, including the Contracts (Rights of Third Parties) Act, consideration requirements, and capacity to contract rules.

Banking Act (Cap. 19): Relevant for guarantees related to banking facilities and financial institutions, setting out specific requirements for bank-related guarantees.

Moneylenders Act (Cap. 188): Applicable when the underlying debt involves licensed moneylenders, containing specific requirements for guarantees in money lending transactions.

Unfair Contract Terms Act (Cap. 396): Governs unfair terms in contracts and sets limitations on exclusion clauses in guarantee agreements.

Limitation Act (Cap. 163): Establishes time limits for enforcing guarantees and prescription periods for legal actions related to guarantee contracts.

Property Law/Conveyancing and Law of Property Act (Cap. 61): Relevant when guarantees are secured against property, governing the property-related aspects of guarantee agreements.

Companies Act (Cap. 50): Applicable when parties are corporate entities, covering corporate capacity and authority to provide guarantees.

Case Law on Guarantees: Relevant Singapore court decisions that establish precedents and principles for interpretation and enforcement of guarantees.

Discharge of Guarantees: Legal principles governing how guarantees can be discharged, terminated, or released.

Execution Requirements: Specific requirements for valid execution of guarantee documents under Singapore law.

Disclosure Obligations: Legal requirements regarding necessary disclosures between parties in a guarantee agreement.

Rights of Subrogation and Indemnity: Legal principles governing the guarantor's rights to step into the creditor's position and seek indemnity from the principal debtor.