Key Takeaways
- The frameworks differ in temperament before they differ in detail. IFRS states principles and expects judgement; US GAAP supplies rules, bright lines and industry-specific guidance.
- Most of the gap sits in a small number of places. Inventory costing, asset revaluation, development costs and whether an impairment can ever be reversed account for the bulk of the difference in reported figures.
- US GAAP permits LIFO; IFRS prohibits it. In a period of rising costs that single choice moves reported profit, closing inventory and tax outcomes in the United States.
- IFRS allows previously recognised impairments to be reversed when conditions improve. US GAAP generally does not — once written down, an asset stays down.
- Development costs can be capitalised under IFRS when defined criteria are met. US GAAP expenses research and development as incurred, with a narrow carve-out for certain software costs.
- The two are about to diverge again. IFRS 18 rebuilds the face of the income statement from January 2027, while the FASB has instead added a disaggregation footnote for annual periods beginning after 15 December 2026 — same investor complaint, two different answers.
An Indian finance team usually meets US GAAP for one of four reasons: the company has been acquired by an American parent, it is preparing to list on a US exchange, it operates a global capability centre reporting into a US group, or an American investor has asked for figures on a basis they recognise. In each case the request arrives with a deadline and an assumption that the conversion is administrative.
It is not. The two frameworks agree on most of what happens in a business, and then disagree sharply in a handful of places that happen to be exactly where large numbers sit — inventory, long-lived assets, intangibles and impairment. This article concentrates on those, because they are the ones that change the answer rather than the wording.
Principles vs RulesWhy the Two Frameworks Feel So Different to Work With
One framework is written by a London-based board for worldwide use; the other is written by a Connecticut-based board for a single, heavily litigated market. US GAAP is gathered into one Accounting Standards Codification organised by topic. That difference in origin explains most of what follows.
- IFRS is principles-based. It sets out objectives and recognition criteria and leaves the application to judgement, supported by disclosure of that judgement.
- US GAAP is rules-based. It supplies detailed guidance, quantitative bright lines and a substantial body of industry-specific literature, which reduces the room for interpretation.
- This produces a different kind of argument. An IFRS discussion tends to be about whether a treatment faithfully represents the substance. A US GAAP discussion tends to be about whether the transaction falls within the scope of a particular sub-topic.
- Neither approach is superior. Rules give comparability and defensibility; principles give flexibility to reflect unusual arrangements. The practical consequence is that documentation matters more under IFRS and scoping matters more under US GAAP.
The Differences That Move the Numbers
Set aside the long lists of minor divergences. These are the ones that most often produce a different profit, a different balance sheet, or a reconciling item a US parent has to explain.
| Area | Under IFRS | Under US GAAP |
|---|---|---|
| Inventory costing | LIFO is prohibited; FIFO or weighted average only | LIFO is permitted, and is widely used in the United States because of its tax linkage |
| Inventory write-downs | Reversed when the reason for the write-down no longer exists | Write-downs create a new cost basis and are not reversed |
| Property, plant and equipment | Cost model or revaluation model, applied by class of asset | Historical cost; revaluation is not permitted |
| Component depreciation | Required where parts of an asset have different useful lives | Permitted but rarely applied in practice |
| Development costs | Capitalised once the recognition criteria in the intangibles standard are met | Research and development expensed as incurred, with a narrow exception for certain software development costs |
| Impairment of long-lived assets | Single-step test against recoverable amount, being the higher of fair value less costs of disposal and value in use | Two-step approach beginning with an undiscounted cash flow recoverability test |
| Reversal of impairment | Permitted for most assets when circumstances improve; prohibited for goodwill | Generally prohibited once recognised |
| Leases — lessee | Single model; substantially all leases produce a right-of-use asset and interest-plus-amortisation expense | Dual model; operating leases produce a straight-line expense despite being on the balance sheet |
| Provisions | Recognised where an outflow is more likely than not; a mid-point is used for a range of equally likely outcomes | A higher likelihood threshold applies, and the low end of a range is used where no amount is better |
| Interest and dividends in cash flows | Presentation choices are available within defined limits | Classification is largely prescribed |
| Interim reporting | Each interim period is treated as a discrete period | Interim periods are treated as an integral part of the annual period |
Summarised for orientation. Each row carries conditions and exceptions in the underlying standards — read the applicable literature before relying on any of it for a reporting decision.
Illustrative figures for a hypothetical group. Each item is an amount IFRS may permit to be recognised where US GAAP would record nil, so each becomes a reconciling item when the same business is reported on both bases. Magnitudes will differ entirely by company — the pattern is the point.
Read the chart as a direction rather than a size. Every bar represents a case where IFRS allows an entity to reflect improved value or capitalised effort, and US GAAP does not. That asymmetry is why a business reported under IFRS will frequently show higher assets and equity than the identical business reported under US GAAP, and why conversion is a genuine exercise rather than a relabelling one.
In DepthThree Differences Worth Understanding Properly
LIFO, and why it survives in the United States
Under the last-in, first-out assumption, the most recently purchased inventory is treated as sold first. When costs are rising, that pushes higher costs into cost of sales, reduces reported profit and leaves older, cheaper costs sitting in closing inventory. IFRS prohibits it on the grounds that it rarely reflects physical flow and distorts the balance sheet.
It persists in the United States largely because of a tax rule requiring consistency between tax and financial reporting for entities using it. That link makes the choice commercially rational there and irrelevant elsewhere. For a group converting, LIFO is often the single largest reconciling item on inventory.
Impairment reversals, and the asymmetry they create
Under IFRS, if the circumstances that caused an impairment reverse, the write-down is reversed too — restricted to the carrying amount that would have existed had no impairment been recognised, and never for goodwill. Under US GAAP, the reduced carrying amount becomes the new cost basis and recovery is not recognised.
The practical effect appears across a cycle. A group that impairs in a downturn and recovers in the upturn will show that recovery in IFRS profit and not in US GAAP profit, which makes multi-year comparisons across the two frameworks unreliable unless the reconciliation is understood.
Development costs and the point of capitalisation
IFRS separates research from development. Research is expensed; development is capitalised once the entity can demonstrate technical feasibility, intention and ability to complete, probable future economic benefits and reliable measurement of cost. US GAAP expenses both as incurred, with a narrow exception for certain software development costs once technological feasibility is established.
For engineering, pharmaceutical and technology businesses this is material. The same spending produces an intangible asset and a stronger balance sheet under one framework, and a charge against profit under the other.
Presentation and Vocabulary
Before any measurement difference is visible, the statements simply read differently. This catches people who move between the two frameworks mid-career.
| Element | IFRS Convention | US GAAP Convention |
|---|---|---|
| Position statement | Statement of Financial Position | Balance Sheet |
| Typical balance sheet ordering | Frequently least liquid first | Most liquid first, beginning with cash |
| Performance statement | Statement of Profit or Loss and Other Comprehensive Income | Income Statement, with comprehensive income presented separately or combined |
| Structure of the standards | Individually numbered standards, IAS and IFRS | A single codification organised by topic and sub-topic |
| Extent of industry guidance | Limited; principles applied across sectors | Extensive, with dedicated industry sub-topics |
| Development of practice | Interpretations issued centrally | A substantial body of accepted practice alongside the codification |
Conventions rather than absolute rules — both frameworks permit variation in presentation within defined limits.
Other comprehensive income exists in both frameworks and behaves broadly similarly, though the individual items and their recycling behaviour differ in places. If that concept is unfamiliar, our note on other comprehensive income sets out the underlying logic.
What Changes NextThe 2027 Divergence: Same Problem, Two Different Answers
Convergence has been the assumed direction of travel for two decades. The next reporting cycle runs the other way, and it does so on the most visible statement in the accounts.
Both boards responded to the same investor complaint — that reported expenses are too aggregated to understand a company’s cost structure. They responded differently.
- The IASB rebuilt the statement itself. From reporting years starting in January 2027, IFRS 18 sorts income and expenses into prescribed buckets, forces certain subtotals to appear on the face, and drags adjusted performance metrics into the audited numbers.
- The FASB left the face alone and added a footnote. Its disaggregation requirements, introduced through an update to the codification, apply to public business entities for annual reporting periods beginning after 15 December 2026, with interim periods following a year later. A subsequent update clarified that effective date.
- The FASB requirement is a tabular note disaggregating certain expense captions into natural categories — inventory purchases, employee compensation, depreciation and intangible amortisation — without changing recognition or the captions on the face of the statement.
- The IASB requirement changes what the statement itself looks like, including which subtotals must appear and how items are categorised by reference to the entity’s main business activities.
What this means for a dual-reporting group. A calendar-year group reporting under both frameworks in 2027 has to satisfy two different solutions to one problem in the same year — restructuring the primary statement for IFRS while building a new disclosure table for US GAAP. Neither output substitutes for the other. Groups planning system and chart-of-accounts changes should scope both together rather than sequentially, because the underlying data requirements overlap even though the presentation does not.
When an Indian Business Actually Meets US GAAP
Ind AS satisfies Indian statutory reporting. US GAAP becomes relevant when an American reader needs the numbers on their own terms.
- An American holding company folding an Indian entity into its consolidation will want a pack prepared on the group’s own basis, running in parallel with the Indian statutory file.
- Going to a US exchange for equity or debt imports that market’s disclosure regime and audit expectations wholesale.
- Global capability centres and captive units frequently report into US groups monthly, which makes the differences an operational matter rather than a year-end one.
- American private equity and strategic buyers running diligence often ask for a US GAAP view so the target is comparable with the rest of their portfolio.
- None of these require a duplicate ledger. What they require is a defensible bridge from one basis to the other, rebuilt each period — the day-to-day of our financial statement conversion engagements.
How to Approach a Conversion Sensibly
- Scope by materiality before anything else. Identify which of the divergences above actually exist in your business — most groups find three or four matter and the rest do not.
- Start with inventory and long-lived assets. That is where the largest reconciling items usually sit, and where the underlying data is hardest to reconstruct retrospectively.
- Check whether any impairment has been recognised historically, and whether it has since reversed. This single question often explains a large part of an equity difference.
- Identify capitalised development costs and be ready to reverse them for the US GAAP view, along with the related amortisation.
- Fix the accounting policy differences in a written bridge document, so the reconciliation is repeatable each period rather than rebuilt from memory.
- Build the reconciliation into the monthly close if reporting is monthly. Groups that leave it to year-end spend far more time on it.
- Plan the 2027 presentation changes on both frameworks together, since the data required to satisfy each overlaps substantially.
Four Misconceptions Worth Correcting
“IFRS and US GAAP have basically converged.”
Revenue and leases moved a long way towards each other. Inventory, revaluation, impairment reversal and development costs did not, and the 2027 presentation changes move the two apart again.
“US GAAP is always the more conservative framework.”
It is more conservative on reversals and revaluation, and less so on LIFO, which can reduce reported profit in a way IFRS would not permit. Conservatism runs in both directions depending on the item.
“The conversion is a presentation exercise.”
Presentation is the visible part. The reconciling items sit in measurement, and they change equity and profit rather than layout.
“We report under Ind AS, so IFRS is automatic.”
Ind AS is converged with IFRS but carries deliberate departures of its own, so an Indian group converting for a US parent is often bridging two gaps rather than one.
How N D Savla & Associates Supports Dual Reporting
Most of this work reaches us in one of two states: a group that has been asked for US GAAP numbers next month, or a group that has been producing them badly for years. The ones that go well share a habit — they treat the bridge as part of the monthly close, not as a year-end event.
Four Engagement Lines That Carry Dual Reporting
IFRS Implementation Services
Group reporting packs, policy alignment and the reconciliation bridge between bases.
Ind AS Implementation
Where the Indian statutory position is also moving, this runs alongside so the two do not conflict.
IPO Readiness Assessment
For transaction-driven timelines, readiness and diligence support address the reporting basis before the deal timetable forces the answer.
Financial Reporting & MIS
Ongoing reporting is handled here, with the audit and assurance team planning the assurance implications in the same cycle.
The standards themselves are published by the International Accounting Standards Board and the Financial Accounting Standards Board respectively, and both are amended regularly. Read the text applicable to your reporting period before relying on any summary, this one included.
Frequently Asked QuestionsIFRS vs US GAAP — Common Questions
Is IFRS accepted in the United States?
Foreign private issuers may file with the Securities and Exchange Commission using IFRS as issued by the IASB, without reconciling to US GAAP. Domestic US registrants report under US GAAP. So an Indian company listing in the United States may have a choice depending on its status, while its American parent will not.
Which framework is stricter, IFRS or US GAAP?
Neither, consistently. US GAAP is stricter on reversing impairments and prohibits revaluation, so assets tend to be carried lower. IFRS is stricter on inventory costing, prohibiting LIFO. The honest answer is that each is more restrictive in different places, which is exactly why conversion produces reconciling items in both directions.
Why is LIFO allowed in the United States but not under IFRS?
IFRS concluded that LIFO rarely reflects the actual flow of inventory and leaves outdated costs on the balance sheet. In the United States it survives largely because tax rules require consistency between the tax and financial reporting treatment, which makes it commercially attractive there. It is frequently the largest single inventory reconciling item on conversion.
If we already report under Ind AS, how much work is a US GAAP pack?
Less than starting from Indian GAAP, but more than nothing. Ind AS is built on IFRS, so the conceptual distance to US GAAP is similar. You are bridging the Ind AS carve-outs first and then the IFRS-to-US-GAAP differences, and inventory, impairment history and capitalised development costs usually drive the effort.
Are IFRS and US GAAP going to converge fully?
There is no active programme to do so, and the next reporting cycle moves them apart on presentation. The IASB has rebuilt the face of the income statement through IFRS 18 for periods from January 2027, while the FASB addressed the same concern through a disaggregation footnote for annual periods beginning after 15 December 2026. Expect the frameworks to remain close in principle and distinct in application.
IFRS and US GAAP agree about most of commercial life and disagree about a small number of things that happen to carry large balances. If you are converting, find your three or four material differences, document the bridge properly, and build it into the reporting rhythm rather than the year-end rush. And do not assume the two frameworks are quietly merging — on the income statement, at least, 2027 takes them in opposite directions.
Reach N D Savla & Associates at +91 98218 32683, +91 98190 00511 or +91 91670 58000 to scope a US GAAP reporting pack or a conversion bridge — or visit ndsavlaa.com to explore the firm’s services.
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