IAS 1 vs IFRS 18: What’s Changing in Financial Statement Presentation?

IAS 1 vs IFRS 18

Introduction

On April 9, 2024, the International Accounting Standards Board (IASB) issued IFRS 18 — a brand-new standard that replaces IAS 1, fundamentally reshaping how financial performance is presented in financial statements.

While the recognition and measurement rules remain unchanged, IFRS 18 introduces a new structure, subtotals, and mandatory categories that will significantly affect how users read and interpret financial information.

This post explores:

  • The difference between IAS 1 and IFRS 18
  • Why IFRS 18 was introduced
  • What’s changing across each financial statement
  • A clear, beginner-friendly example
  • Key takeaways for accountants and companies

IAS 1 vs IFRS 18: What’s the Difference?

FeatureIAS 1IFRS 18
FocusGeneral format guidanceDetailed, standardized structure and subtotals
Statement of Profit or LossFlexible categories and subtotalsMandatory subtotals and 3 defined categories
Operating ProfitNot requiredRequired subtotal
Management Performance Measures (MPMs)Not regulatedStrict disclosure and reconciliation required
ComparabilityLimited across companiesEnhanced across companies and industries
Effective DateExisting standardApplies from Jan 1, 2027 (early adoption allowed)

Why Did IASB Introduce IFRS 18?

The IASB introduced IFRS 18 in response to:

  • Inconsistent presentation of operating results
  • Lack of transparency around custom KPIs (non-GAAP measures)
  • Users’ demand for greater comparability and clarity
  • Need to standardize what counts as “operating,” “investing,” and “financing” results

IAS vs IFRS: General Difference

  • IAS (International Accounting Standards): Older standards issued before 2001 by the International Accounting Standards Committee (IASC)
  • IFRS (International Financial Reporting Standards): Newer standards issued post-2001 by the IASB
  • Over time, IAS standards are being replaced by IFRS, like in this case with IAS 1 → IFRS 18

How Each Financial Statement Will Change Under IFRS 18

1. Statement of Profit or Loss – Mandatory Categories

IFRS 18 requires the income statement to be split into three defined categories with required subtotals:

  • Operating: Income/expenses from core business activities
  • Investing: Related to assets that generate income but are not used in operations
  • Financing: Expenses related to raising finance (e.g., interest)

Required Subtotals:

  • Operating profit
  • Profit before financing and income tax
  • Profit before tax
  • Net profit

2. Statement of Financial Position (Balance Sheet)

IFRS 18 does not require major layout changes but encourages:

  • Clear distinction between current and non-current items
  • Optional alignment of items with operating/investing/financing structure

3. Statement of Cash Flows

Although not structurally changed, entities are encouraged to:

  • Align cash flow categories with P&L categories (e.g., investing/financing)

4. Notes – Management Performance Measures (MPMs)

If entities use custom KPIs in investor presentations (like “adjusted EBITDA”), they must:

  • Disclose them in the notes
  • Reconcile them with IFRS-defined subtotals
  • Explain calculation and changes over time
  • Apply them consistently

Profit and Loss Comparison: IAS 1 vs IFRS 18 (Line by Line)

Line ItemIAS 1 ExampleIFRS 18 Example
Revenue$100,000$100,000 (Operating Category)
Cost of Sales($60,000)($60,000) (Operating Category)
Gross Profit$40,000(Not mandatory under IFRS 18)
Selling & Admin Expenses($10,000)($10,000) (Operating Category)
R&D Expenses($5,000)($5,000) (Operating Category)
Other Operating Income$2,000$2,000 (Operating Category)
Operating Profit (new!)(Optional subtotal)$27,000 (Required)
Gain on Disposal of Equipment$3,000$3,000 (Investing Category)
Profit Before Financing and Tax(Not shown separately)$30,000 (Required subtotal)
Interest Expense($4,000)($4,000) (Financing Category)
Profit Before Tax$26,000$26,000
Income Tax Expense($6,000)($6,000)
Net Profit$20,000$20,000

Same bottom line — just clearer structure under IFRS 18


Transition & Implementation

  • Effective Date: January 1, 2027
  • Issued On: April 9, 2024
  • Application: Retrospective (with some reliefs)
  • Preparation Required:
    • Revise chart of accounts
    • Update reporting systems
    • Educate finance teams and stakeholders

Key Takeaways

IFRS 18 is not just cosmetic — it changes how performance is structured
✅ Adds clarity, consistency, and comparability to financial reporting
✅ Start preparing now: align your systems and educate your team
✅ If you’re reporting custom metrics, MPM rules now apply

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