IFRS vs J-GAAP: Key Differences Compared
Same company, different numbers? A comprehensive guide to accounting standard differences
About 8 min
What you'll learn
Table of Contents
Interactive tutorial: lines where IFRS vs JGAAP actually diverge
Walks through Meiji Holdings (E21902) to see the lines where IFRS and JGAAP measurement actually differ — revenue recognition, operating profit definition, leases, goodwill amortization, and R&D capitalization.
1. Why Comparison Matters
01
The same business activities can produce different reported figures depending on the accounting standards applied.
02
IFRS adoption has caused operating income swings of billions of yen in some cases.
03
When making investment decisions, always verify which standards the companies being compared are using.
2. Comprehensive Comparison Table
Standard Setter
Approach
Rules-based
Principles-based
Goodwill
Amortized (max 20 years)
Not amortized (annual impairment test)
Leases
Revenue Recognition
Comprehensive Income
Disclosed in notes only
Presented as primary financial statement
Operating Income
Defined (multi-step)
Not defined (company discretion)
Extraordinary Items
Exists (5-step income)
Not permitted
Retirement Benefits
Development Costs
Expensed as incurred
Capitalized if criteria met (IAS 38)
| Item | J-GAAP | IFRS | Investor Impact |
|---|---|---|---|
| Standard Setter | ASBJ (Accounting Standards Board of Japan) | IASB (International Accounting Standards Board) | — |
| Approach | Rules-based | Principles-based | IFRS allows more company judgment |
| Goodwill | Amortized (max 20 years) | Not amortized (annual impairment test) | IFRS shows higher operating income |
| Leases | Finance leases only on B/S | Nearly all leases on B/S (IFRS 16) | IFRS total assets/liabilities are larger |
| Revenue Recognition | Revenue Recognition Standard (mandatory from 2021) | IFRS 15 | Largely converged |
| Comprehensive Income | Disclosed in notes only | Presented as primary financial statement | OCI fluctuations more visible under IFRS |
| Operating Income | Defined (multi-step) | Not defined (company discretion) | Cross-company comparison difficult under IFRS |
| Extraordinary Items | Exists (5-step income) | Not permitted | J-GAAP income steps are clearer |
| Retirement Benefits | Corridor approach allowed | Immediate OCI recognition (IAS 19) | IFRS B/S more volatile |
| Development Costs | Expensed as incurred | Capitalized if criteria met (IAS 38) | IFRS may show higher profits |
When comparing peers, goodwill treatment and lease accounting create the biggest differences.
3. Case Study
Using a hypothetical Company B, let's see how the same economic activity differs under J-GAAP and IFRS.
Goodwill (acquisition cost ¥10B, 20-year amortization)
Operating income difference: +¥1.0B (IFRS side is higher)
Leases (office with ¥500M annual lease payments)
Operating lease expense: ▲¥500M
Right-of-use asset + lease liability recorded Depreciation + interest: total ▲¥520M
Under IFRS, both total assets and liabilities increase. Operating income differs slightly.
4. Four Accounting Standards Available in Japan
5. Practical Checklist
Check the accounting standard on the annual report cover page
Verify goodwill amount and treatment method
Confirm the definition of operating income in the notes
Check whether lease liabilities are recorded on the B/S
Compare peers using the same accounting standard
Compare J-GAAP vs IFRS Side by Side
Compare companies from the same industry using different standards.