Basis of presentation and principles of consolidation. The accompanying consolidated financial statements are presented on a consolidated basis and include all of the accounts and operations of Livent and its majority-owned subsidiaries. The financial statements reflect the financial position, results of operations and cash flows of Livent in accordance with U.S. GAAP. All significant intercompany accounts and transactions are eliminated in consolidation.

Estimates and assumptions. In preparing the financial statements in conformity with U.S. GAAP we are required to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ materially from these estimates under different assumptions or conditions, but we do not believe such differences will materially affect our financial position, results of operations or cash flows.

Due to the current coronavirus ("COVID-19") pandemic, there has been uncertainty and disruption in the global economy and financial markets. The estimates used for, but not limited to, the collectability of trade receivables, fair value of long-lived assets, income taxes, inventory valuation and fair value of financial instruments could be impacted. We have assessed the impact and are not aware of any specific events or circumstances that required an update to our estimates and assumptions or materially affected the carrying value of our assets or liabilities as of the date of issuance of this Annual Report on Form 10-K. These estimates may change as new events occur and additional information is obtained.

Trade receivables, net of allowance. Trade receivables consist of amounts owed to us from customer sales and are recorded when revenue is recognized. The allowance for trade receivables represents our best estimate of the probable losses associated with potential customer defaults. In developing our allowance for trade receivables, we use a two stage process which includes calculating a formula to develop an allowance to appropriately address the uncertainty surrounding collection risk of our entire portfolio and specific allowances for customers where the risk of collection has been reasonably identified either due to liquidity constraints or disputes over contractual terms and conditions.

Our method of calculating the formula consists of estimating the recoverability of trade receivables based on historical experience, current collection trends, and external business factors such as economic factors, including regional bankruptcy rates, and political factors. Our analysis of trade receivable collection risk is performed quarterly, and the allowance is adjusted accordingly.

Inventories. Inventories are stated at the lower of cost or net realizable value. Inventory costs include those costs directly attributable to products before sale, including all manufacturing overhead but excluding distribution costs. All inventories are determined on a first-in, first-out (“FIFO”) basis.

recognize acquired property, plant and equipment, from acquisitions at its estimated fair value. Depreciation is calculated principally on a straight-line basis over the estimated useful lives of the assets. The major classifications of property, equipment and software, including their respective expected useful lives, consisted of the following:

Gains and losses are reflected in income upon sale or retirement of assets. Expenditures that extend the useful lives of property, plant and equipment or increase productivity are capitalized. Ordinary repairs and maintenance are expensed as incurred through operating expense. We periodically evaluate whether events or circumstances indicate that the net book value of our property, plant and equipment may not be recoverable.

Capitalized interest. For the years ended December 31, 2021, 2020 and 2019 we capitalized interest expense of $15.4 million, $12.0 million and $5.7 million, respectively. These costs were associated with the construction of certain long-lived assets and have been capitalized as part of the cost of those assets. We amortize capitalized interest over the estimated useful lives of the assets.

Impairments of long-lived assets. We review the recoverability of the net book value of long-lived assets whenever events and circumstances indicate that the net book value of an asset may not be recoverable from the estimated undiscounted future cash flows expected to result from its use and eventual disposition. In cases where undiscounted expected future cash flows are less than the net book value, we recognize an impairment loss equal to an amount by which the net book value exceeds the fair value of the asset. Long-lived assets to be disposed of are reported at the lower of carrying amount or fair value less cost to sell. There were no significant impairments during the three years ended December 31, 2021.

Asset retirement obligations. We record asset retirement obligations (“AROs”) at present value at the time the liability is incurred if we can reasonably estimate the settlement date. The associated AROs are capitalized as part of the carrying amount of related long-lived assets. In future periods, the liability is accreted to its estimated fair value and the capitalized cost is depreciated over the useful life of the related asset. We also adjust the liability for changes resulting from the passage of time and/or revisions to the timing or the amount of the original estimate. Upon retirement of the long-lived asset, we either settle the obligation for its recorded amount or incur a gain or loss.

We have mining operations and legal reclamation obligations related to our facilities upon closure of the mines. The AROs primarily relate to post-closure reclamation of brine wells and sites involved in the surface mining and manufacturing of lithium in Argentina. Also, we have obligations at certain of our manufacturing facilities and offices in the event of permanent plant shutdown.

Deferred compensation plan. We have established a trust fund administered by a third party to provide funding for benefits payable under the Livent Non-qualified Saving Plan ("Livent NQSP") to which highly compensated Livent employees can elect to defer part of their compensation. The assets held in the trust consist of money market investments, a managed portfolio of equity securities and Livent common stock. For each reporting period, the Company records a net mark-to-market adjustment to Selling, general and administrative expense in our consolidated statements of operations for the investments in the trust fund and the corresponding obligation to participants in the Livent NQSP. The money market investments and equity securities assets are included in Other assets in the accompanying consolidated balance sheets. The investments in Livent common stock under the Livent NQSP are included in Treasury stock on our consolidated balance sheets. The deferred compensation obligation to participants is included in Other long-term liabilities on our consolidated balance sheets. See Note 15 and Note 17 for additional details on the Livent NQSP deferred compensation plan.

and Hedging - Contracts in Entity's Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity's Own Equity ("ASU 2020-06"), which we early adopted January 1, 2021 under the full retrospective method. See Note 11 and Note 14 for details.

Financial instruments. Our financial instruments include cash and cash equivalents, trade receivables, other current assets, investments held in trust fund, trade payables, derivatives and amounts included in accruals meeting the definition of financial instruments. Trade receivables and trade payables are recorded at cost, which approximates fair value due to the short-term nature of the instruments. Investments held in trust are for the Livent NQSP as discussed in "Deferred compensation plan" subsection above. Livent enters into derivative contracts to hedge exposures and the associated assets or liabilities are recorded in our consolidated balance sheets and the gains or losses associated with these transactions are included in the consolidated statements of operations.

Equity method investments. Livent has entered into agreements with The Pallinghurst Group relating to Quebec Lithium Partners ("QLP"), a joint venture owned equally by The Pallinghurst Group and Livent, and the conduct of certain business operations and oversight previously conducted by Nemaska Lithium Inc. The Company accounts for the investment in QLP as an equity method investment included in Investments in our consolidated balance sheets. See Note 16 for details.

Leases. The Company determines if an arrangement is a lease at the inception of the contract. Our operating leases are included in Operating lease right-of-use ("ROU") assets, Operating lease liabilities - current, and Operating lease liabilities - long term in the consolidated balance sheets. The operating lease ROU assets and operating lease liabilities are recognized based on the present value of future minimum lease payments over the lease term at commencement date. As most of our leases do not provide an implicit interest rate, we utilize an estimated incremental borrowing rate based on the information available at commencement date in determining the present value of future payments. In determining the discount rate used in the present value calculation, the Company has elected to apply the portfolio approach for leases provided the leases commenced at or around the same time. This election allows the Company to account for leases at a portfolio level provided that the resulting accounting at this level would not differ materially from the accounting at the individual lease level. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term.

The Company has elected not to separate lease and non-lease components and accounts for each separate lease component and non-lease component associated with that lease component as a single lease component. Operating lease ROU assets include all contractual lease payments and initial direct costs incurred less any lease incentives. Facility leases generally only contain lease expense and non-component items such as taxes and pass through charges. Additionally, we have elected not to apply the recognition requirements of ASC 842 to leases which have a lease term of less than one year at the commencement date.

Most of the Company's leases for corporate facilities contain terms for renewal and extension of the lease agreement. The exercise of lease renewal options is generally at the Company’s sole discretion. The Company includes the lease extensions when it is reasonably certain we will exercise the extension. The Company’s lease agreements do not contain any material variable lease payments, material residual value guarantees or any material restrictive covenants. We currently do not have any finance leases. See Note 16 for information on related disclosures regarding leases.

Restructuring and other charges. We continually perform strategic reviews and assess the return on our businesses. This sometimes results in a plan to restructure the operations of our business. We record an accrual for severance and other exit costs under the provisions of the relevant accounting guidance.

Additionally, as part of these restructuring plans, write-downs of long-lived assets may occur. Two types of assets are impacted: assets to be disposed of by sale and assets to be abandoned. Assets to be disposed of by sale are measured at the lower of carrying amount or estimated net proceeds from the sale. Assets to be abandoned with no remaining future service potential are written down to amounts expected to be recovered. The useful life of assets to be abandoned that have a remaining future service potential are adjusted and depreciation is recorded over the adjusted useful life.

Revenue recognition. Revenue from product sales is recognized when we satisfy a performance obligation by transferring the promised goods to a customer, that is, when control of the good transfers to the customer. The customer is then invoiced at the agreed-upon price with payment terms generally ranging from 30 to 180 days. See Note 4 for further details regarding revenue recognition.

Income and other taxes. We provide current income taxes on income reported for financial statement purposes adjusted for transactions that do not enter into the computation of income taxes payable and recognize deferred tax liabilities and assets for the expected future tax consequences of temporary differences between the carrying amounts and the tax basis of assets and liabilities. Prior to separation, pursuant to the tax matters agreement with FMC, in jurisdictions where we file consolidated returns with FMC, we have recorded our allocated share of the consolidated liability as part of the income tax payable in our consolidated balance sheets. In taxing jurisdictions where we file as a standalone entity we have recorded the tax liability/benefit to income tax payable/receivable. We do not provide income taxes on the equity in undistributed earnings of consolidated foreign subsidiaries as it is our intention that such earnings will remain invested in those companies.

Stock-based compensation. Stock-based compensation expense for the three years ended December 31, 2021 has been recognized for all share options and other equity-based arrangements. Stock-based compensation cost is measured at the date of grant, based on the fair value of the award, and is recognized over the employee’s requisite service period. We made a policy election to recognize forfeitures in stock-based compensation expense as they occur. See Note 12 for more information.

Environmental obligations. We provide for environmental-related obligations when they are probable and amounts can be reasonably estimated. Where the available information is sufficient to estimate the amount of liability, that estimate has been used.

Included in our environmental liabilities are costs for the operation, maintenance and monitoring of site remediation plans (“OM&M”). Such reserves are based on our best estimates for these OM&M plans. Over time we may incur OM&M costs in excess of these reserves. However, we are unable to reasonably estimate an amount in excess of our recorded reserves because we cannot reasonably estimate the period for which such OM&M plans will need to be in place or the future annual cost of such remediation, as conditions at these environmental sites change over time. Such additional OM&M costs could be significant in total but would be incurred over an extended period of years.

Environmental remediation charges represent the costs for the continuing charges associated with environmental remediation at operating sites from previous years and from products that are no longer manufactured. Livent has one environmental remediation site located in Bessemer City, North Carolina. The (income)/charge associated with the cost of remediation for the years ended December 31, 2021, 2020 and 2019 are $(0.3) million, $0.1 million and $0.9 million, respectively. These amounts are recorded as a component within “Restructuring and other charges” on the consolidated statements of operations. The total environmental remediation liability as of December 31, 2021 and 2020 was $6.1 million and $6.7 million, respectively.

Foreign currency. We translate the assets and liabilities of our foreign operations at exchange rates in effect at the balance sheet date. For foreign operations for which the functional currency is not the U.S. dollar, we record translation gains and losses as a component of accumulated other comprehensive loss in equity. The foreign operations’ statements of operations are translated at the monthly exchange rates for the period. Transactions denominated in foreign currency other than our functional currency of the operation are recorded upon initial recognition at the exchange rate at the date of the transaction. After initial recognition, monetary assets and liabilities denominated in foreign currency are remeasured at each reporting date into the functional currency at the exchange rate at that date. Exchange rate differences are recognized as foreign currency transaction gain or loss recorded as a component of Costs of sales in our consolidated statements of operations. We recorded transaction and remeasurement losses of $10.3 million, $14.2 million and $14.8 million for the years ended December 31, 2021, 2020 and 2019, respectively.