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Lesson 4 of 4 11–14% of the exam

IFRS vs US GAAP, new standards and other information sources

International Financial Reporting Standards (IFRS) and US generally accepted accounting principles (US GAAP) have converged on most new standards but still differ on last in, first out (LIFO) inventory, development costs, inventory write-down reversals and where interest paid sits in cash flow. Analysts watch for new standards and transactions, and add issuer, third-party and their own research.

6 min cram, 28 min full read. Based on the 2027 CFA® Program Level I curriculum, Financial Statement Analysis, Learning Module 1. Also part of the 2026 curriculum, so it applies to the November 2026 exam too.

Tailor this to you: take the self-assessment

On the exam

  • Describe implications for financial analysis of alternative financial reporting systems and the importance of monitoring developments in financial reporting standards
  • Describe information sources that analysts use in financial statement analysis besides annual and interim financial reports

Describe the implications of alternative reporting systems and of monitoring standards, and describe information sources beyond the reports. Expect a direction-of-effect or which-system question on the headline differences, and a classification of a source of information.

How deeply to learn each part
Know the idea
Understand it in general. It frames other topics, but you will not calculate with it.
Use it
Understand it well enough to solve a question with it. Recognize when it applies.
Memorize
Learn it by heart. The exam will not give it to you.

You know this one. The full lesson is folded away. The takeaways, formulas and checkpoint below are your quick refresher, and the checkpoint is a fair test of whether you still do.

You tested strong here. The full lesson is folded away. The takeaways, formulas and checkpoint below are your quick refresher, and the checkpoint is a fair test of whether you still know it.

Cram mode: the one-screen version of this lesson. Switch to Full for the explanations, worked examples and interactives.

Which differences between IFRS and US GAAP still matter?

Four, and they all move reported numbers. The two systems agree on most new standards but not on these.

IFRS are developed by the International Accounting Standards Board (IASB ). US GAAP are developed by the Financial Accounting Standards Board (FASB ). Their convergence on conceptual frameworks and existing standards was put on hold in the late 2000s, but major new standards, such as revenue recognition, leasing and credit losses, have been mostly or entirely converged.

AreaUS GAAPIFRSWhat it does to the analysis
StyleRules-basedPrinciples-basedMore judgment under IFRS
Inventory methodsFirst in, first out (FIFO), LIFO, weighted averageFIFO, weighted average (no LIFO)In rising prices LIFO shows higher cost of sales and lower profit, so adjust before comparing
Reversal of inventory write-downsProhibitedPermitted, up to the original write-downIFRS earnings can bounce back
Development costsExpensedCapitalized when conditions are metIFRS shows higher assets and earlier profit
Interest paid (cash flow)OperatingOperating or financingAn IFRS filer can show higher operating cash flow
Headline gaps between IFRS and US GAAP
IFRS versus US GAAPthe differences that move numbers
  • Style Use it IFRS principles-based, US GAAP rules-based
  • Inventory Memorize
    • LIFO US GAAP only; IFRS bans it
    • Reversal of write-downs IFRS allows (up to the original write-down); US GAAP prohibits
  • Development costs Memorize IFRS capitalizes when conditions are met; US GAAP expenses
  • Interest paid in the cash flow statement Memorize US GAAP: operating; IFRS: operating or financing

There is no required reconciliation between the two, so the analyst often lacks the data to adjust. The practical answer is caution: do not compare ratios across systems as if they were identical.

Operating cash flow under the other interest treatment Use it
CFOop=CFOfin−I\text{CFO}_{\text{op}} = \text{CFO}_{\text{fin}} - I

Here CFOfin\text{CFO}_{\text{fin}} is operating cash flow with interest paid classified as financing (an IFRS option), CFOop\text{CFO}_{\text{op}} is operating cash flow with interest paid inside operating (US GAAP, and the other IFRS option), and II is interest paid.

The exam can start from either side: the US GAAP figure, the IFRS figure, the interest or the percentage gap.

Rearrange itInterest classification: operating cash flow under each system
The question asks for
An IFRS filer reports operating cash flow of 80.00 with 12.00 of interest paid shown in financing. With interest in operating, as under US GAAP, its operating cash flow would be closest to:

80.00 − 12.00 = 68.00

Operating cash flow with interest paid in operating68.00

On your calculator
  1. 80−12=68
  1. 80ENTER12−68

ENTER enter (on the HP, puts the number on the stack)

Compare one small company under the two systems, open the lines that change, then sort the information sources on the second tab.

Loading the interactive
Go deeper Other cash flow classifications that differ

Interest paid is the difference this module tests, but the same flexibility applies to other items. Under IFRS, interest and dividends received can be shown in operating or investing activities, and dividends paid in operating or financing. Under US GAAP, interest received, interest paid and dividends received are operating, and dividends paid are financing. The cash flow modules teach these properly.

Go deeper Why development costs and write-downs matter for earnings quality

Capitalizing a development project moves the spending from the income statement to the balance sheet, so early profit rises and assets rise. Reversing a write-down boosts income in a later period. Both give management timing flexibility, which is why the next modules and the reporting quality module treat them as areas to check.

Why must analysts keep up with changing standards?

Because changes in standards change the reported numbers, comparability and valuations, and analysts cannot rely on the data vendors to adjust. Analysts need not be accountants. An accountant watches from the preparer’s side; the analyst watches as a user and asks how a change affects the reports.

Three things to monitor:

  1. New products or types of transactions. Digital assets and new fintech models can have no explicit guidance. Ask for the business purpose, the reporting, the key estimates and the cash flow implications. Some structures exist mainly for window dressing. Standard setters lag behind new products, so their actions will not reveal them.
  2. Actions of standard setters and user groups. The IASB and FASB publish an exposure draft for each proposed standard, and users can send comment letters. CFA Institute members serve on liaison committees and write comment letters on users’ behalf. A change that moves an item from the notes into the statements can change how the market values a company. When employee share options became an expense, their dilutive effect, once buried in the notes, started to reduce reported profit.
  3. Company disclosures about critical accounting policies and estimates, where management judgment concentrates.
How an analyst keeps up with reporting standards
Monitoring developmentsfrom the user's view, not the preparer's
  • New products and transactions Use it no guidance yet; ask the business purpose
  • Standard setters and user groups Use it IASB and FASB exposure drafts, CFA Institute comment letters
  • Company disclosures Use it critical accounting policies and estimates

What information do analysts use beyond the reports?

Four groups, by origin. Sort a source by asking whose voice it is. Outside the company, third-party sources are either public or proprietary.

  • Issuer sources outside the filings: earnings call s (webcast presentations and questions, not legally required), investor day s (ad hoc, in-depth sessions), press release s, conversations with management and investor relations, the company website, and experiencing the products as a customer.
  • Public third-party sources: free industry white papers, government economic and industry indicators, general and industry news, and social media for customer sentiment.
  • Proprietary third-party sources: those that are paid or restricted, such as sell-side and rating agency reports, data platforms and specialist consultancies.
  • Proprietary primary research: surveys, conversations, product comparisons and store visits that the analyst conducts or commissions.

Issuer sources are management’s view and carry its bias. Analysts ask probing questions and cross-check against outside sources.

Where else information comes from
Sources beyond the filed reportsgrouped by origin
  • Issuer Use it management's voice, so biased
    • Earnings calls not legally required; analysts ask questions
    • Investor days and presentations ad hoc, in depth
    • Press releases and website also products and stores as a customer
    • Management and investor relations
  • Public third party Use it free to access
    • Industry white papers
    • Government economic and industry indicators
    • General and industry news; social media
  • Proprietary third party Use it paid or restricted
    • Sell-side and credit rating agency reports
    • Data platforms for example Bloomberg and FactSet
    • Specialist consultancies
  • Proprietary primary research Use it the analyst's own
    • Surveys, conversations, product comparisons, store visits

An analyst who visits stores and interviews shoppers is doing proprietary primary research . Industry and peer information put the company’s results in perspective, and a consumer-products analyst will usually try the product firsthand.

Memorize this

MemorizeIFRS versus US GAAP: the headline gaps

AreaUS GAAPIFRS
Set byFASBIASB
StyleRulesPrinciples
Inventory methodsFIFO, LIFO, weighted averageFIFO, weighted average (no LIFO)
Reversal of inventory write-downProhibitedPermitted (up to the original write-down)
Development costsExpensedCapitalized if conditions are met
Interest paid (cash flow)OperatingOperating or financing

Memory hook LIFO is the lone US-only item. IFRS gets the three flexible ones, "DRI": Development costs, Reversals, Interest.

Know it cold No reconciliation between IFRS and US GAAP is required, so compare across systems with caution.

MemorizeFour origins of other information

OriginExamples
IssuerEarnings calls, investor days, press releases, management, website
Public third partyWhite papers, government data, news, social media
Proprietary third partySell-side and rating agency reports, data platforms, consultancies
Proprietary primary researchOwn surveys, conversations, product comparisons, store visits

Memory hook Whose voice? The company's (issuer), someone free (public), someone paid (proprietary third party), or yours (primary research).

Know it cold Issuer sources carry management's bias; cross-check them.

MemorizeThree things to monitor

WatchWhy
New products or transactionsGuidance may not exist yet
Standard setters and user groupsRule changes alter reported numbers and valuations
Critical accounting policies and estimatesWhere management judgment is concentrated

Memory hook Products, Proposals, Policies: new things, new rules, and the judgment calls.

Know it cold An analyst monitors from the user's perspective, not the preparer's, and does not need to be an accountant.

Headline gaps between IFRS and US GAAP
IFRS versus US GAAPthe differences that move numbers
  • Style Use it IFRS principles-based, US GAAP rules-based
  • Inventory Memorize
    • LIFO US GAAP only; IFRS bans it
    • Reversal of write-downs IFRS allows (up to the original write-down); US GAAP prohibits
  • Development costs Memorize IFRS capitalizes when conditions are met; US GAAP expenses
  • Interest paid in the cash flow statement Memorize US GAAP: operating; IFRS: operating or financing
Where else information comes from
Sources beyond the filed reportsgrouped by origin
  • Issuer Use it management's voice, so biased
    • Earnings calls not legally required; analysts ask questions
    • Investor days and presentations ad hoc, in depth
    • Press releases and website also products and stores as a customer
    • Management and investor relations
  • Public third party Use it free to access
    • Industry white papers
    • Government economic and industry indicators
    • General and industry news; social media
  • Proprietary third party Use it paid or restricted
    • Sell-side and credit rating agency reports
    • Data platforms for example Bloomberg and FactSet
    • Specialist consultancies
  • Proprietary primary research Use it the analyst's own
    • Surveys, conversations, product comparisons, store visits
How an analyst keeps up with reporting standards
Monitoring developmentsfrom the user's view, not the preparer's
  • New products and transactions Use it no guidance yet; ask the business purpose
  • Standard setters and user groups Use it IASB and FASB exposure drafts, CFA Institute comment letters
  • Company disclosures Use it critical accounting policies and estimates
Operating cash flow under the other interest treatment Use it
CFOop=CFOfin−I\text{CFO}_{\text{op}} = \text{CFO}_{\text{fin}} - I
Quick example

An IFRS filer reports operating cash flow of 150 with 21 of interest paid in financing. With interest in operating, as under US GAAP: 150 − 21 = 129. The IFRS figure looks 16.3% higher (21 ÷ 129).

On your calculator
  1. 150−21= 129
  1. 150ENTER21− 129

ENTER enter (on the HP, puts the number on the stack)

How it is asked

  1. Which system permits it

    Which inventory method is permitted under US GAAP but not IFRS?

    LIFO. Weighted average and FIFO are allowed by both.

  2. Direction of the effect

    An IFRS filer classifies interest paid as financing. Versus US GAAP, its operating cash flow is…

    Interest leaves operating, so operating cash flow is higher. The trap is the reverse direction.

  3. Classify the source

    An analyst surveys shoppers outside five stores. The survey is a…

    The analyst's own work is proprietary primary research. A rating agency report is proprietary third party; a government release is public third party; an earnings call is issuer.

  4. What must the analyst do about changing standards

    Which is most likely a way to monitor developments?

    Track new transactions, standard setters' actions and critical accounting policy disclosures. Standard setters' actions lag, so they will not reveal new products.

Exam traps

  • Saying IFRS allows LIFO. It does not; only US GAAP does.
  • Saying US GAAP permits reversing an inventory write-down. It prohibits it; IFRS allows it up to the original write-down.
  • Assuming a reconciliation between the two systems is required. It is not, so the analyst often cannot adjust fully.
  • Treating management's earnings call or investor day as independent information. It is issuer information and carries bias.
  • Mixing the setters up: IASB writes IFRS and FASB writes US GAAP. The Securities and Exchange Commission (SEC) and the Public Company Accounting Oversight Board (PCAOB) do not write US GAAP.

Checkpoint

3 exam-style questions. About 90 seconds each.

  1. 1A company wrote down an inventory item last year. Market prices have since recovered. Which statement about reversing the write-down is correct?

  2. 2An IFRS filer classifies interest paid as a financing cash flow. Its reported operating cash flow is 215 and interest paid is 35. If it used US GAAP instead, its operating cash flow would be closest to:

  3. 3Which of the following is best described as a public third-party source of information?

Key takeaways

  • IFRS and US GAAP still differ on LIFO, development costs, write-down reversals and the place of interest paid.
  • No reconciliation is required, so compare across systems with care.
  • Monitor new transactions, standard setters' actions and critical accounting estimates from the user's side.
  • Add issuer, third-party and your own research, and remember issuer bias.
Operating cash flow under the other interest treatment Use it
CFOop=CFOfin−I\text{CFO}_{\text{op}} = \text{CFO}_{\text{fin}} - I
Quick example

An IFRS filer reports operating cash flow of 150 with 21 of interest paid in financing. With interest in operating, as under US GAAP: 150 − 21 = 129. The IFRS figure looks 16.3% higher (21 ÷ 129).

On your calculator
  1. 150−21= 129
  1. 150ENTER21− 129

ENTER enter (on the HP, puts the number on the stack)

All Financial Statement Analysis formulas, every lesson

Practice exam-style questions on Introduction to Financial Statement Analysis

Questions about this lesson?

Where this comes back

Questions candidates ask

What are the main differences between IFRS and US GAAP for CFA Level 1?

US GAAP is rules-based and IFRS principles-based. US GAAP allows LIFO and IFRS does not. IFRS allows reversing inventory write-downs and capitalizing development costs when criteria are met; US GAAP prohibits the first and expenses the second. IFRS lets interest paid be operating or financing; US GAAP says operating.

Why do analysts need to monitor changes in accounting standards?

New standards and new types of transaction change reported numbers, comparability and valuations. Analysts watch from the user's side: how will a change affect the reports? They follow new products, standard setters' proposals and critical accounting policies.

What information sources do analysts use besides annual reports?

Issuer sources such as earnings calls, investor days and press releases; public third-party sources such as government data and news; proprietary third-party sources such as sell-side or rating agency reports and data platforms; and the analyst's own primary research.

Spotted an error? Tell us and we will fix it.

  1. What financial statement analysis is for
  2. The six-step financial statement analysis framework
  3. Regulatory filings, notes, MD&A and the audit report
  4. IFRS vs US GAAP, new standards and other information sources

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