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Income Taxes
12 Months Ended
Dec. 31, 2020
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
Eos is subject to regulation under U.S. federal and U.S. state tax laws, regulations and policies. Changes to these laws or regulations may affect the Company’s tax liability, return on investments and business operations.
Earnings before income taxes
Net loss before income taxes for domestic operations for the years ended December 31, 2020 and 2019 was $(68,754) and $(79,483), respectively.
Income expense (benefit)
Income tax expense (benefit) for the years ended December 31, 2020 and 2019 was as follows:

20202019
Current expense (benefit):
U.S. federal$— $— 
U.S. state and local— — 
Total current income tax (benefit) provision— — 
Deferred expense (benefit):
U.S. federal$— $— 
U.S. state and local— — 
Total deferred income tax (benefit) provision— — 
Total income tax (benefit) provision$— $— 
Eos has no tax provision (benefit) for the periods ended December 31, 2020 and 2019 due the generation of taxable losses offset by a valuation allowance, discussed below, on the deferred tax assets.
Reconciliation of US Federal Statutory income tax rate to actual income tax rate
The reconciliation from the statutory U.S. federal income tax rate to the effective tax rate is as follows:
20202019
Income (loss) before income taxes(68,754)(79,483)
Statutory U.S. federal income tax (21%)(14,439)(16,691)
State and local income tax(3,149)1,548 
Disallowed interest expense4,564 11,903 
Non-deductible transaction cost66 — 
Non-deductible equity cost1,698 — 
Federal R&D credit3,660 (1,002)
Uncertain tax position322 — 
Valuation allowance7,360 4,215 
Other(82)27 
Total income tax expense— — 
Effective tax rate— — 
The reported income tax provision differs from the amount computed by applying the statutory US federal income tax rate of 21% to the income before income taxes primarily due to pretax losses for which no tax benefit has been provided and nondeductible interest expense for US income tax purposes.
Deferred Income Taxes
Eos records deferred income taxes to reflect the net tax effects of temporary differences, if any, between the carrying amounts of assets and liabilities for financial reporting and the amounts used for income tax purposes. The components of deferred tax assets and liabilities at December 31, 2020 and 2019 were as follows:

20202019
Deferred tax assets:
NOL carryforwards$40,386 $30,540 
Tax credit carryforwards1,204 4,346 
Employee compensation1,478 187 
Accruals and reserves1,743 543 
Organizational costs179 194 
Transaction costs324 — 
Deferred tax assets, gross$45,314 35,810 
Valuation allowance(43,895)(34,773)
Total deferred tax assets, net$1,419 $1,037 
Deferred tax liabilities:
Fixed assets(1,358)(1,010)
Investment in partnership(61)(27)
Deferred tax liabilities(1,419)(1,037)
Total deferred tax asset (liability)— — 

Eos’s net deferred tax balances consist primarily of federal and state net operating losses (“NOLs”) available for carry forward, and research and development credits for the years ended December 31, 2020 and 2019. The deferred tax balances and related disclosures above reflect the adjusted attribute carryforwards and associated deferred tax assets post-sale of the prior years’ attributes.
During 2019, the Company participated in a tax certificate transfer program with the state of New Jersey and sold a portion of its available prior year New Jersey state NOLs, in varying amounts from tax years 2016, 2017 and 2018. The deferred tax balances and related disclosures above reflect the adjusted attribute carryforwards and associated deferred tax assets post-sale of the prior years’ attributes. The Company anticipates participating in the program for the tax year 2019, but as of the balance sheet date, no 2019 attributes had been sold.
The Company maintains a valuation allowance where it is more-likely-than-not that all or a portion of a deferred tax asset may not be realized. Changes in the valuation allowance are included in the Company’s income tax provision in the period of change. In determining whether a valuation allowance is required, the Company evaluates factors such as prior earnings history, expected future earnings, reversal of existing taxable temporary differences, carry back and carry forward periods and tax planning strategies that could potentially enhance the likelihood of the realization of a deferred tax asset. Management has determined that it is more-likely-than not that Eos will not be able to utilize its deferred tax assets at December 31, 2020 and 2019 due to a history of cumulative losses. As such, Eos has a valuation allowance against its net deferred tax assets.
The valuation allowance increased by $9,122 between December 31, 2020 and 2019. The increase was primarily attributable to an increase in NOL and tax credit carryforwards. At December 31, 2020, the valuation allowance is $43,895, of which $1,762 will be allocated to additional paid-in capital when released. The remaining valuation allowance of $42,133 will be released through continuing operations.
Net Operating Losses & Tax Credits

As of December 31, 2020 and 2019, Eos has federal research and development tax credits (“R&D credit”) of approximately $4,603 and $3,733, which begin to expire in varying amounts from 2031 – 2040 and 2032 – 2039, respectively, subject to the annual limitation described below. In addition, Eos has state R&D credits of approximately $1,131 and $613, which will expire in varying amounts from 2024 – 2027 and 2025 – 2026 for the years ended December 31, 2020 and 2019, respectively.
The Company has NOL carryforwards for tax purposes and other deferred tax assets that are available to offset future taxable income, subject to the annual limitation described below.
As of December 31, 2020 and 2019, Eos has gross federal NOL carryforwards of approximately $174,258 and $137,909. As of December 31, 2020, Eos has state NOL carryforwards of $60,206. Regarding the federal NOL for the year ended December 31, 2020, $89,051 begins to expire in varying amounts from 2032 through 2036, while $85,207 has an indefinite carryforward period. The state NOL carryforwards begin to expire in varying amounts from 2035 through 2040. The US (federal and state) operating loss carryforwards and credits may be subject to an annual limitation due to the “change in ownership” provisions of the Internal Revenue Code, and similar state provisions. The Company determined that the merger transaction (described further in Note 2 ), constitutes a change of ownership as defined under Internal Revenue Code Section 382 and Section 383. Based on management’s Section 382 Limitation Analysis, it is expected that all NOL carryforwards that existed as of the transaction date will be allowable under Section 382, however, the deferred tax asset on the Company’s NOL carryforward is offset by a full valuation allowance at December 31, 2020. Based on management’s Section 383 Limitation Analysis, it is expected that $4,530 of federal R&D credits will expire unused. As such, these credits have been written off as of December 31, 2020.
In March and December, 2020, the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”) and the Consolidated Appropriations Act of 2021 (the “CAA”) were signed into law in response to the Covid-19 pandemic. The CARES Act and the CAA provided several forms of tax law changes, though Eos does not anticipate that any will have a material impact on the financial statements.
Unrecognized Tax Benefits
The Company is subject to income taxes in the United States (federal and state). Significant judgment is required in evaluating the Company’s tax positions and determining Eos’s provision for income taxes. During the ordinary course of business, there are transactions and calculations for which the ultimate tax determination is uncertain. The Company records a liability for uncertain tax positions on the basis of a two-step process in which (i) management determines whether it is more-likely-than-not that the tax position will be sustained on the technical merits of the position and (ii) for those tax positions that meet the more-likely-than-not recognition threshold, the Company recognizes the largest amount of tax benefit that is more than 50 percent likely to be realized upon ultimate settlement with the related tax authority.
Eos has unrecognized tax benefits associated with uncertain tax positions as of December 31, 2020 and 2019 as follows:
20202019
Gross unrecognized tax benefits as of January 1
— — 
Additions:
Current year tax positions722 
Prior year tax positions— — 
Reduction of prior year tax positions— — 
Settlements— — 
Lapse of statute of limitations— — 
Gross unrecognized tax benefits as of December 31722 — 
Included in the balance of unrecognized tax benefits at December 31, 2020 are potential benefits of nil that, if recognized, would affect the effective tax rate on income from continuing operations. The open tax years for federal and state tax returns are generally 2017 and forward. Net operating losses and R&D credits generated in closed years and utilized in open years are subject to adjustment by the tax authorities. Eos is not currently under examination by any taxing jurisdiction.
The Company regularly assesses the adequacy of its provision for income tax contingencies in accordance with ASC 740. As a result, the Company may adjust the reserves for unrecognized tax benefits for the impact of new facts and developments, such as changes to interpretation of relevant tax law, assessments from taxing authorities, settlements with tax authorities and lapses of statute of limitations.