# Contingent Liabilities: ASC 450 & IAS 37 Explained Published: 2026-04-19 Author: Warren Team URL: https://www.heywarren.com/blog/contingent-liabilities --- When Bayer acquired Monsanto in 2018, it inherited a relatively small line item buried in the footnotes: pending Roundup weed-killer litigation. Within two years, that quiet disclosure exploded into more than $10 billion in accrued reserves and tens of billions in market cap destruction. The lesson for investors and finance professionals is brutal: contingent liabilities are where balance sheets hide their scariest secrets. Contingent liabilities are potential obligations whose existence — or amount — depends on uncertain future events. A pending lawsuit, a product warranty claim, an environmental cleanup order, a tax dispute with the [IRS](https://www.irs.gov/): none are certain debts today, but each could become one tomorrow. Yet despite their importance, the rules around when to accrue them, when to merely disclose them, and when to ignore them are confusing, inconsistent across accounting standards, and ripe for management abuse. This guide walks through the ASC 450 (US GAAP) and IAS 37 ([IFRS](https://www.ifrs.org/)) frameworks that govern contingent [liability](/blog/examples-liabilities) recognition, with worked examples, famous case studies, and the questions every investor should ask when reading a 10-K. Warren is an AI financial advisor built to translate dense accounting standards into decisions you can actually use. ## What is a contingent liability? A contingent [liability](/blog/examples-of-liabilities) is a potential obligation that may arise depending on the outcome of a future event outside the company's full control. Unlike an accounts payable invoice or a bond coupon, the existence or size of a contingent liability is uncertain at the reporting date. Examples include lawsuits, warranties, and guarantees. The defining feature is uncertainty in three dimensions: whether the obligation exists at all, how large it might ultimately be, and when it might be settled. Both US GAAP (ASC 450, "Contingencies") and IFRS (IAS 37, "Provisions, Contingent Liabilities and Contingent Assets") build their entire recognition framework around resolving those three uncertainties through probability and estimability tests. Critically, a contingent liability only lands on the balance sheet when two conditions are simultaneously met: the loss is probable AND the amount is reasonably estimable. Otherwise, it lives in the footnotes — or nowhere at all. ## The recognition framework: ASC 450 and IAS 37 Both standards use a two-axis test: how likely is the loss, and can you put a number on it? The answers determine whether the liability gets accrued on the balance sheet, disclosed in the footnotes, or left out entirely. The matrix below summarizes the decision rules every CFO, controller, and audit committee member knows by heart. ![Contingent liability recognition matrix](data:image/svg+xml;base64,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) The thresholds matter enormously. Under US GAAP, "probable" is interpreted as "likely to occur," which courts and auditors generally treat as roughly 70% or higher. Under IFRS, "probable" means "more likely than not" — anything above 50%. That difference can cause the same lawsuit to be accrued under IFRS but only disclosed under US GAAP, producing materially different balance sheets for otherwise identical companies. ## Common contingent liabilities you'll see in filings Most contingent liabilities cluster into a handful of recurring categories. Pending litigation is by far the most visible, but warranties, environmental obligations, tax disputes, and guarantees show up across nearly every industrial and financial filer. The chart below maps the most common types and how each is typically handled. ![The five most common contingent liability categories seen in public company filings, each with distinct recognition treatment.](data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20760%20211%22%20width%3D%22760%22%20height%3D%22211%22%20role%3D%22img%22%3E%3Ctitle%3EHierarchy%3C%2Ftitle%3E%3Crect%20width%3D%22100%25%22%20height%3D%22100%25%22%20fill%3D%22%23f8fafc%22%2F%3E%3Crect%20x%3D%22300%22%20y%3D%2220%22%20width%3D%22160%22%20height%3D%2258%22%20rx%3D%228%22%20fill%3D%22%232563eb%22%2F%3E%3Ctext%20x%3D%22380%22%20y%3D%2254%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22700%22%20fill%3D%22white%22%3EContingent%20Liabilities%3C%2Ftext%3E%3Cpath%20d%3D%22M%20380%2078%20L%20380%20105.5%20L%20110%20105.5%20L%20110%20133%22%20stroke%3D%22%23cbd5e1%22%20stroke-width%3D%222%22%20fill%3D%22none%22%2F%3E%3Crect%20x%3D%2230%22%20y%3D%22133%22%20width%3D%22160%22%20height%3D%2258%22%20rx%3D%228%22%20fill%3D%22white%22%20stroke%3D%22%230891b2%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22110%22%20y%3D%22158%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2213%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3EPending%20Lawsuits%3C%2Ftext%3E%3Ctext%20x%3D%22110%22%20y%3D%22176%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3EFootnote%20or%20accrue%3C%2Ftext%3E%3Cpath%20d%3D%22M%20380%2078%20L%20380%20105.5%20L%20290%20105.5%20L%20290%20133%22%20stroke%3D%22%23cbd5e1%22%20stroke-width%3D%222%22%20fill%3D%22none%22%2F%3E%3Crect%20x%3D%22210%22%20y%3D%22133%22%20width%3D%22160%22%20height%3D%2258%22%20rx%3D%228%22%20fill%3D%22white%22%20stroke%3D%22%230891b2%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22290%22%20y%3D%22158%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2213%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3EProduct%20Warranties%3C%2Ftext%3E%3Ctext%20x%3D%22290%22%20y%3D%22176%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3EAccrue%20%28historical%29%3C%2Ftext%3E%3Cpath%20d%3D%22M%20380%2078%20L%20380%20105.5%20L%20470%20105.5%20L%20470%20133%22%20stroke%3D%22%23cbd5e1%22%20stroke-width%3D%222%22%20fill%3D%22none%22%2F%3E%3Crect%20x%3D%22390%22%20y%3D%22133%22%20width%3D%22160%22%20height%3D%2258%22%20rx%3D%228%22%20fill%3D%22white%22%20stroke%3D%22%230891b2%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22470%22%20y%3D%22158%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2213%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3EEnvironmental%3C%2Ftext%3E%3Ctext%20x%3D%22470%22%20y%3D%22176%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3EAccrue%20%2B%20disclose%3C%2Ftext%3E%3Cpath%20d%3D%22M%20380%2078%20L%20380%20105.5%20L%20650%20105.5%20L%20650%20133%22%20stroke%3D%22%23cbd5e1%22%20stroke-width%3D%222%22%20fill%3D%22none%22%2F%3E%3Crect%20x%3D%22570%22%20y%3D%22133%22%20width%3D%22160%22%20height%3D%2258%22%20rx%3D%228%22%20fill%3D%22white%22%20stroke%3D%22%230891b2%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22650%22%20y%3D%22158%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2213%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3ETax%20Disputes%3C%2Ftext%3E%3Ctext%20x%3D%22650%22%20y%3D%22176%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2210%22%20fill%3D%22%2364748b%22%3EASC%20740-10%3C%2Ftext%3E%3C%2Fsvg%3E) *The five most common contingent liability categories seen in public company filings, each with distinct recognition treatment.* ![Common contingent liability examples](data:image/svg+xml;base64,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) Product warranties are typically the easiest case: a manufacturer with years of historical claims data can build a reliable accrual percentage (say, 1.2% of revenue) and book a warranty reserve every quarter. Environmental remediation under Superfund laws, by contrast, can require decades of estimation revisions as soil studies progress. Tax disputes follow their own rules under ASC 740-10 (uncertain tax positions), which uses a "more likely than not" recognition standard closer to IFRS. ## The disclosure decision flow in practice Every contingent liability runs through the same decision tree: assess probability, then assess estimability, then choose the accounting treatment. The flowchart below mirrors the workflow auditors and controllers actually follow each quarter when evaluating litigation memos from outside counsel. ![The four-step decision tree auditors and controllers follow each quarter to determine whether a contingent liability is accrued, disclosed, or omitted.](data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20875%20125%22%20width%3D%22875%22%20height%3D%22125%22%20role%3D%22img%22%3E%3Ctitle%3EFlow%20diagram%3C%2Ftitle%3E%3Crect%20width%3D%22100%25%22%20height%3D%22100%25%22%20fill%3D%22%23f8fafc%22%2F%3E%3Crect%20x%3D%2230%22%20y%3D%2225%22%20width%3D%22170%22%20height%3D%2275%22%20rx%3D%2210%22%20fill%3D%22white%22%20stroke%3D%22%232563eb%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22115%22%20y%3D%2258.5%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3ELoss%20probable%3F%3C%2Ftext%3E%3Ctext%20x%3D%22115%22%20y%3D%2278.5%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2211%22%20fill%3D%22%2364748b%22%3EASC%20450%20%2F%20IAS%2037%3C%2Ftext%3E%3Cline%20x1%3D%22205%22%20y1%3D%2262.5%22%20x2%3D%22237%22%20y2%3D%2262.5%22%20stroke%3D%22%2364748b%22%20stroke-width%3D%222%22%2F%3E%3Cpolygon%20points%3D%22244%2C62.5%20235%2C57.5%20235%2C67.5%22%20fill%3D%22%2364748b%22%2F%3E%3Crect%20x%3D%22245%22%20y%3D%2225%22%20width%3D%22170%22%20height%3D%2275%22%20rx%3D%2210%22%20fill%3D%22white%22%20stroke%3D%22%232563eb%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22330%22%20y%3D%2258.5%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3EEstimable%3F%3C%2Ftext%3E%3Ctext%20x%3D%22330%22%20y%3D%2278.5%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2211%22%20fill%3D%22%2364748b%22%3ECan%20you%20quantify%3F%3C%2Ftext%3E%3Cline%20x1%3D%22420%22%20y1%3D%2262.5%22%20x2%3D%22452%22%20y2%3D%2262.5%22%20stroke%3D%22%2364748b%22%20stroke-width%3D%222%22%2F%3E%3Cpolygon%20points%3D%22459%2C62.5%20450%2C57.5%20450%2C67.5%22%20fill%3D%22%2364748b%22%2F%3E%3Crect%20x%3D%22460%22%20y%3D%2225%22%20width%3D%22170%22%20height%3D%2275%22%20rx%3D%2210%22%20fill%3D%22white%22%20stroke%3D%22%232563eb%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22545%22%20y%3D%2258.5%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3EAccrue%3C%2Ftext%3E%3Ctext%20x%3D%22545%22%20y%3D%2278.5%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2211%22%20fill%3D%22%2364748b%22%3EBalance%20sheet%3C%2Ftext%3E%3Cline%20x1%3D%22635%22%20y1%3D%2262.5%22%20x2%3D%22667%22%20y2%3D%2262.5%22%20stroke%3D%22%2364748b%22%20stroke-width%3D%222%22%2F%3E%3Cpolygon%20points%3D%22674%2C62.5%20665%2C57.5%20665%2C67.5%22%20fill%3D%22%2364748b%22%2F%3E%3Crect%20x%3D%22675%22%20y%3D%2225%22%20width%3D%22170%22%20height%3D%2275%22%20rx%3D%2210%22%20fill%3D%22white%22%20stroke%3D%22%232563eb%22%20stroke-width%3D%222%22%2F%3E%3Ctext%20x%3D%22760%22%20y%3D%2258.5%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3EDisclose%20only%3C%2Ftext%3E%3Ctext%20x%3D%22760%22%20y%3D%2278.5%22%20text-anchor%3D%22middle%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2211%22%20fill%3D%22%2364748b%22%3EFootnote%3C%2Ftext%3E%3C%2Fsvg%3E) *The four-step decision tree auditors and controllers follow each quarter to determine whether a contingent liability is accrued, disclosed, or omitted.* ![Disclosure decision flow](data:image/svg+xml;base64,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) ## Worked example: a pending lawsuit Suppose a plaintiff sues your company for $10 million in damages. Outside counsel writes a memo concluding that loss is probable (estimated 60% likelihood) and that the realistic settlement range is $3 million to $7 million, with no point in that range more likely than any other. What journal entry do you book? Under ASC 450-20-25-2, when a loss is probable and a range can be estimated but no single amount is the best estimate, you accrue the **lower end of the range**. So you debit Litigation Expense for $3 million and credit Accrued Litigation Liability for $3 million. You then disclose the full $3-7 million range and the nature of the litigation in your footnotes, including any reasonably possible additional loss above the accrued amount. Under IFRS IAS 37, the "best estimate" standard typically pushes companies toward the **midpoint** of the range — $5 million in this example — producing a $2 million higher liability for the identical fact pattern. This is one of the most consequential remaining differences between US GAAP and IFRS, and the convergence project has explicitly left it unresolved. ## Famous contingent liability events Some of the largest financial losses in corporate history began life as "reasonably possible" footnote disclosures before migrating to multi-billion-dollar accruals. The pattern repeats often enough that experienced investors learn to read footnotes the way detectives read crime scenes. - **Bayer Roundup litigation**: After acquiring Monsanto, Bayer accrued more than $10 billion across multiple settlements with plaintiffs alleging the glyphosate herbicide caused non-Hodgkin's lymphoma. - **Johnson & Johnson talc lawsuits**: J&J has accrued and paid over $9 billion related to claims that its baby powder contained asbestos. The company even attempted a controversial "Texas two-step" bankruptcy maneuver to ring-fence the liability. - **Tobacco Master Settlement Agreement (1998)**: The four largest US tobacco companies agreed to pay roughly $206 billion over 25 years to 46 states, the largest civil litigation settlement in US history. - **GE asbestos liability**: General Electric carries multi-billion-dollar reserves for asbestos exposure claims tied to legacy industrial operations. - **BP Deepwater Horizon**: BP recognized over $65 billion in cumulative charges related to the 2010 Gulf of Mexico oil spill, including cleanup, fines, and civil settlements. In each case, early-year disclosures dramatically understated what would eventually hit the income statement. ## Investor implications: how to read footnotes Contingent liabilities are the canonical reason "the balance sheet doesn't tell the whole story." A company with $50 million of accrued litigation reserves on its balance sheet might have another $500 million of "reasonably possible" exposure buried in the footnotes — and an unknown universe of "remote" claims that never appear at all. Key 10-K reading habits: - **Item 3 (Legal Proceedings)** must disclose material pending lawsuits, including governmental investigations exceeding $1 million in potential sanctions. - **Commitments and Contingencies footnote** quantifies accruals and ranges of reasonably possible loss above accrued amounts. - **Year-over-year movement** in legal reserves often signals management's evolving view of probability. - **Outside counsel response letters** are summarized but not quoted; rapid reserve increases often follow adverse rulings. - **"Cannot reasonably estimate"** language is a yellow flag — it means even management isn't sure where the floor is. ## Tax treatment and deferred taxes Contingent liabilities create one of the most common book-tax differences. For book purposes, you accrue the expense when probable and estimable. For tax purposes, the IRS generally only allows a deduction when the liability is **fixed, determinable, and economic performance has occurred** — usually when the cash is paid. That timing gap creates a deferred tax asset (DTA). If you accrue a $10 million litigation reserve at a 25% effective tax rate, you record a $2.5 million DTA, which reverses when the cash settlement occurs and becomes tax-deductible. Companies must then assess whether a valuation allowance is needed — particularly for businesses with limited future taxable income against which to realize the DTA. ## Risk management and common mistakes Smart finance teams don't just account for contingent liabilities — they actively manage them. The toolkit includes commercial general liability and product liability insurance, indemnification clauses in M&A purchase agreements, escrow and holdback structures that fund post-closing claims, and explicit litigation reserves negotiated as part of settlements. The most common mistakes auditors flag: - **Failing to accrue** when the probable + estimable threshold is clearly met (often driven by management optimism) - **Over-disclosing remote items** to appear conservative, which clutters footnotes and confuses readers - **Inconsistent year-to-year treatment** without clear documentation of changed facts or assumptions - **Mis-applying the range rule** — using midpoint under US GAAP instead of the required lower end - **Failing to update** estimates as new information emerges (depositions, expert reports, settlement offers) - **Aggregating dissimilar contingencies** to mask material individual items Auditors treat contingencies as a high-risk area and typically require management representation letters, outside counsel confirmations, and detailed support for every material accrual. ## US GAAP vs IFRS: a persistent divide The [FASB](https://www.fasb.org/)-IASB convergence project that ran from 2002 to roughly 2015 explicitly attempted to harmonize contingent liability accounting and explicitly failed. The remaining differences are not cosmetic: ![For the same $3–7M probable-loss range, US GAAP requires accruing the lower end while IFRS requires the best estimate (midpoint), producing a $2M gap.](data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20800%20210%22%20width%3D%22800%22%20height%3D%22210%22%20role%3D%22img%22%3E%3Ctitle%3EComparison%3C%2Ftitle%3E%3Crect%20width%3D%22100%25%22%20height%3D%22100%25%22%20fill%3D%22%23f8fafc%22%2F%3E%3Ctext%20x%3D%22230%22%20y%3D%2257.5%22%20text-anchor%3D%22end%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3EUS%20GAAP%20%28ASC%20450%29%3C%2Ftext%3E%3Crect%20x%3D%22240%22%20y%3D%2225%22%20width%3D%22270%22%20height%3D%2255%22%20rx%3D%226%22%20fill%3D%22%232563eb%22%2F%3E%3Ctext%20x%3D%22522%22%20y%3D%2257.5%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22700%22%20fill%3D%22%232563eb%22%3E%243%3C%2Ftext%3E%3Ctext%20x%3D%22230%22%20y%3D%22152.5%22%20text-anchor%3D%22end%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22600%22%20fill%3D%22%230f172a%22%3EIFRS%20%28IAS%2037%29%3C%2Ftext%3E%3Crect%20x%3D%22240%22%20y%3D%22120%22%20width%3D%22450%22%20height%3D%2255%22%20rx%3D%226%22%20fill%3D%22%237c3aed%22%2F%3E%3Ctext%20x%3D%22702%22%20y%3D%22152.5%22%20font-family%3D%22system-ui%2C-apple-system%2Csans-serif%22%20font-size%3D%2214%22%20font-weight%3D%22700%22%20fill%3D%22%237c3aed%22%3E%245%3C%2Ftext%3E%3C%2Fsvg%3E) *For the same $3–7M probable-loss range, US GAAP requires accruing the lower end while IFRS requires the best estimate (midpoint), producing a $2M gap.* - **Probability threshold**: ~70%+ under US GAAP vs >50% under IFRS, meaning IFRS captures more contingencies as accrued provisions. - **Measurement when range exists**: lower end (US GAAP) vs best estimate / midpoint (IFRS). - **Discounting**: required under IFRS when the time value of money is material; not required under US GAAP for most contingencies. - **Terminology**: IFRS calls accrued items "provisions" and reserves the "contingent liability" label only for disclosed-not-accrued items. For multinational investors comparing peer companies across reporting frameworks, these differences can produce meaningful balance sheet variation that has nothing to do with underlying business risk. Ready to put this knowledge to work? Try Warren, your AI financial advisor — get personalized, conflict-free guidance at heywarren.com --- ## Related Reading **More from Warren**: - [What Is Pyramiding in Trading?](/blog/what-is-pyramiding) - [Housing Market Crash: History, Causes, and What Precedes Them](/blog/housing-market-crash) - [Capital Adequacy Ratio Meaning: CAR Formula & Basel III](/blog/capital-adequacy-ratio) - [Liquid Markets: Tightness, Depth, and Resiliency](/blog/liquid-markets) **Authoritative sources**: - [SEC Investor.gov — Investing Basics](https://www.investor.gov/introduction-investing/investing-basics) - [FINRA — Investor Education](https://www.finra.org/investors)