Definition

Generally Accepted Accounting Principles (GAAP) is the body of standards, conventions and rules used in a particular jurisdiction. In the UK, GAAP is primarily codified through Financial Reporting Standard 102 (FRS 102), issued by the Financial Reporting Council, which applies to most UK companies not required to use IFRS. International Financial Reporting Standards (IFRS) are globally recognised standards issued by the International Accounting Standards Board (IASB). Under the Companies Act 2006, UK-listed companies must prepare consolidated accounts under UK-adopted IFRS, whilst smaller and most private property companies use FRS 102.

Why this matters for Accounting Principles & Procedures

  • Level 1 knowledge: you must be able to define GAAP and IFRS and explain which framework applies to a given entity.
  • The framework chosen determines how investment property, revenue, leases and financial instruments are reported, directly affecting how a surveyor interprets a client's accounts.
  • Property valuations prepared under RICS Red Book standards may feed into IFRS or FRS 102 fair-value disclosures, making it essential to know which standard is in play.
  • Assessors frequently probe whether a candidate understands that UK-listed groups use IFRS whilst most private property companies use FRS 102, and that the two frameworks can produce materially different results for the same asset.

Key principles

The UK accounting landscape

Since 2005, UK-listed companies have been required to prepare consolidated financial statements under UK-adopted IFRS. Subsidiary, parent-only and unlisted company accounts generally follow FRS 102. Very small companies may use FRS 105, the micro-entities regime. The choice of framework is largely determined by company type and listing status rather than management preference.

Key differences between IFRS and FRS 102

Whilst both frameworks share the same conceptual foundations, they diverge in areas relevant to property professionals. Under IAS 40, investment property fair value gains hit the income statement directly. Under FRS 102 Section 16, movements are also recognised in profit or loss, but disclosures and transitional provisions differ in detail. Lease accounting under IFRS 16 requires almost all leases on the balance sheet as right-of-use assets, whereas FRS 102 Section 20 retains the finance/operating lease distinction.

Common underlying principles

Despite their differences, GAAP and IFRS share a common conceptual basis. Both require financial statements to give a true and fair view, rely on accruals and going concern bases of preparation, and require consistency, comparability and materiality. IFRS 15 governs revenue recognition for listed entities using a five-step model; FRS 102 Section 23 uses a simpler probability-and-measurement approach that affects how fee income is recognised on long-running instructions.

Relevant RICS guidance and legislation

  • Companies Act 2006 — sets out which entities must use IFRS and which may use UK GAAP; governs the legal form and filing of accounts.
  • FRS 102: The Financial Reporting Standard applicable in the UK and Republic of Ireland (Financial Reporting Council) — the primary UK GAAP standard for most property companies.
  • IAS 40: Investment Property — governs recognition and measurement of investment property under IFRS.
  • IFRS 16: Leases — requires lessees to recognise right-of-use assets and lease liabilities for most leases.
  • RICS Rules of Conduct (effective 2 February 2022) — Rule 5 (competent service) requires members to understand the financial reporting context of the advice they give.

Ethics and Rules of Conduct angle

Rule 5 of the RICS Rules of Conduct requires members to provide competent service. Advising on the financial implications of a property transaction without knowing which accounting framework applies risks providing misleading guidance. Competence also links to Rule 3 (integrity): presenting financial ratios without understanding the accounting policy choices that underpin them could amount to misrepresentation, even if unintentional.

APC-style Q&As

Q (Level 1)What is the difference between GAAP and IFRS?

GAAP refers to jurisdiction-specific accounting rules; in the UK the principal standard is FRS 102. IFRS is a set of globally harmonised standards issued by the IASB. UK-listed companies must use UK-adopted IFRS for consolidated accounts; most private and unlisted companies use FRS 102.

Q (Level 1)Which companies in the UK are required to use IFRS?

Under the Companies Act 2006, UK-listed companies (those whose securities are admitted to trading on a regulated market) must prepare consolidated financial statements under UK-adopted IFRS. Unlisted companies and subsidiaries may choose IFRS or use FRS 102.

Q (Level 2)How does the choice between IAS 40 and FRS 102 Section 16 affect the reporting of investment property?

Under both standards, fair value changes on investment property are recognised in profit or loss. However, they differ in detail on transitional provisions, disclosures and the interaction with deferred tax, which can produce different net asset figures for what appears to be the same portfolio. Under IAS 40, the income statement is often more volatile as fair value movements hit it directly each period.

Q (Level 2)Why does the accounting framework matter when interpreting a client's financial statements?

The framework determines the accounting policies applied, which in turn affect reported profit, net assets and key ratios. A gearing ratio calculated from IFRS accounts may differ significantly from one based on FRS 102 accounts for the same entity, particularly where leases or investment property revaluations diverge. Before interpreting any financial metric, confirm which framework is in use and what the key accounting policies are.

Q (Level 3)A property development client asks you to advise on the financial reporting implications of a sale-and-leaseback transaction. How do you approach this?

(example) My first step would be to confirm the client's accounting framework. Under IFRS 16, a sale-and-leaseback creates a right-of-use asset and lease liability on the balance sheet, and the gain on sale may be restricted. Under FRS 102, the treatment depends on whether the leaseback is a finance or operating lease. In either case I would recommend early engagement of the client's auditors and document my advice clearly, noting the limits of my expertise as a surveyor.