Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2016

Principles of Consolidation - The consolidated financial statements include the accounts of Comstock Mining Inc., and its wholly owned subsidiaries: Comstock Mining LLC, Comstock Real Estate Inc. and Comstock Industrial LLC. Inter-company transactions and balances have been eliminated.

Basis of Presentation

Basis of Presentation - The accompanying consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America which contemplate continuation of the Company as a going concern.

Inventories, Stockpiles and Mineralized Material on Leach Pads

Inventories, Stockpiles and Mineralized Material on Leach Pads - Inventories, including stockpiles and mineralized material on leach pads are carried at the lower of cost or net realizable value. Net realizable value represents the estimated future sales price of the product based on current and long-term metals prices, less the estimated costs to complete production and bring the product to sale. Write-downs of stockpiles, mineralized material on leach pads and inventories to net realizable value are reported as a component of costs applicable to mining revenue. Cost is comprised of production costs for mineralized material produced and processed. Production costs include the costs of materials, costs of processing, direct labor, mine site and processing facility overhead costs, stock-based compensation, and depreciation, amortization and depletion.

Stockpiles - Stockpiles represent mineralized material that has been extracted from the mine and is available for further processing. Stockpiles are measured by estimating the number of tons added and removed from the stockpile. Stockpile tonnages are verified by periodic surveys. Costs are allocated to stockpiles based on relative values of material stockpiled and processed using current mining costs incurred up to the point of stockpiling the material, including applicable overhead, depreciation, and depletion relating to mining operations, and removed at each stockpile’s average cost per ton.

Mineralized Material on Leach Pads - The Company utilizes a heap leaching process to recover gold from its mineralized material. Under this method, the mineralized material is placed on leach pads where it is treated with a chemical solution that dissolves the gold contained in the material. The resulting gold-bearing solution is further processed in a facility where the gold is recovered. Costs are added to mineralized material on leach pads based on current mining and processing costs, including applicable depreciation relating to mining and processing operations. Costs are transferred from mineralized material on leach pads to subsequent stages of in-process inventories as the gold-bearing solution is processed. The value of such transferred costs of mineralized material on leach pads is based on the average cost per estimated recoverable ounce of gold on the leach pad.

The estimates of recoverable gold on the leach pads are calculated from the quantities of material placed on the leach pads (measured tons added to the leach pads), the grade of material placed on the leach pads (based on assay data) and a recovery percentage.

Although the quantities of recoverable gold placed on the leach pads are reconciled by comparing the quantities and grades of material placed on leach pads to the quantities and grades quantities of gold actually recovered (metallurgical balancing), the nature of the leaching process inherently limits the ability to precisely monitor inventory levels. As a result, the metallurgical balancing process is constantly monitored and estimates are refined based on actual results over time. Variations between actual and estimated quantities resulting from changes in assumptions and estimates that do not result in write-downs to net realizable value are accounted for on a prospective basis.

In-process Inventories - In-process inventories represent mineralized materials that are currently in the process of being converted to a saleable product through the Merrill-Crowe process. The value of in-process material is measured based on assays of the material fed into the process and the projected recoveries of material. In-process inventories are valued at the average cost of the material fed into the process attributable to the source material coming from the mines, stockpiles and/or leach pads plus the in-process conversion costs, including applicable depreciation relating to the process facilities incurred to that point in the process.

Finished Goods Inventories - Finished goods inventories include gold that has been processed through the Company’s Merrill-Crowe facility and are valued at the average cost of their production.

Fair Value Measurements

Fair Value Measurements - The fair value of a financial instrument is the amount that could be received upon the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Financial assets are marked to bid prices and financial liabilities are marked to offer prices. The fair value should be calculated based on assumptions that market participants would use in pricing the asset or liability, not on assumptions specific to the entity. In addition, the fair value of liabilities should include consideration of non-performance risk, including the party’s own credit risk.

Fair value measurements do not include transaction costs. A fair value hierarchy is used to prioritize the quality and reliability of the information used to determine fair values. Categorization within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fair value hierarchy is defined into the following three categories:

Level 1: Quoted market prices in active markets for identical assets or liabilities.

Level 2: Observable market-based inputs or unobservable inputs that are corroborated by market data.

Level 3: Unobservable inputs that are not corroborated by market data.

Long-Lived Assets

Long-Lived Assets - We review the carrying amount of our long-lived assets for impairment whenever there are negative indicators of impairment. An asset is considered impaired when estimated future cash flows are less than the carrying amount of the asset. In the event the carrying amount of such asset is not considered recoverable, the asset is adjusted to its fair value. Fair value is generally determined based on discounted future cash flows.

Mineral Rights and Properties

Mineral Rights and Properties - We defer acquisition costs until we determine the viability of the property. Since we do not have proven and probable reserves as defined by Securities and Exchange Commission (“SEC”) Industry Guide 7, exploration expenditures are expensed as incurred. We expense care and maintenance costs as incurred.

We review the carrying value of our mineral rights and properties for impairment whenever there are negative indicators of impairment. Our estimate of the gold price, mineralized materials, operating capital, and reclamation costs are subject to risks and uncertainties affecting the recoverability of our investment in the mineral claims and properties. Although we have made our best, most current estimate of these factors, it is possible that near term changes could adversely affect estimated net cash flows from our mineral claims and properties and possibly require future asset impairment write-downs.

Where estimates of future net operating cash flows are not available and where other conditions suggest impairment, we assess recoverability of carrying value from other means, including net cash flows generated by the sale of the asset. We use the units-of-production method to deplete the mineral rights and properties.

Properties, Plant and Equipment

Properties, Plant and Equipment - We record properties, plant and equipment at historical cost. We provide depreciation and amortization in amounts sufficient to match the cost of depreciable assets to operations over their estimated service lives or productive value. We capitalize expenditures for improvements that significantly extend the useful life of an asset. We charge expenditures for maintenance and repairs to operations when incurred. Depreciation is computed using the straight-line method over estimated useful lives as follows:



Building	7 to 15 years
Vehicles and equipment	3 to 7 years
Processing and laboratory	5 to 15 years
Furniture and fixtures	2 to 3 years

Reclamation Liabilities and Asset Retirement Obligations

Reclamation Liabilities and Asset Retirement Obligations - Minimum standards for site reclamation and closure have been established for us by various government agencies. Asset retirement obligations are recognized when incurred and recorded as liabilities at fair value. The liability is accreted over time through periodic charges to earnings. In addition, the asset retirement cost is capitalized and amortized over the life of the related asset. Reclamation costs are periodically adjusted to reflect changes in the estimated present value resulting from the passage of time and revisions to the estimates of either the timing or amount of the reclamation and abandonment costs. The Company reviews, on an annual basis, unless otherwise deemed necessary, the asset retirement obligation at each mine site.

Revenue Recognition

Revenue Recognition - Revenue is recognized from sales when persuasive evidence of an arrangement exists, the price is determinable, the product has been delivered, the title has been transferred to the customer and collection of the sales price is reasonably assured. Gold revenue is recorded at an agreed upon spot price and gold ounce measurement resulting in revenue and a receivable at the time of sale. Gold revenue is recorded net of refining charges and discounts. Sales of by-products (such as silver) are credited to costs applicable to mining revenue. Real estate revenue is recognized as services are provided to customers.

All accounts receivable amounts are due from a single customer. Substantially all mining revenues recorded in the current period also related to the same customer. As gold can be sold through numerous gold market traders worldwide, the Company is not economically dependent on a limited number of customers for the sale of its product.

Stock Issued For Goods and Services

Stock Issued For Goods and Services - Common and preferred shares issued for goods and services are valued based upon the fair market value of our common stock or the goods and services received, whichever is the most reliably measurable on the date of issue.

Stock-Based Compensation

Stock-Based Compensation - For stock-based transactions, compensation expense is recognized over the requisite service period, which is generally the vesting period, based on the estimated fair value on the grant date of the award.

Loss per Common Share

Loss per Common Share - Basic net loss per common share is computed by dividing net loss, less the preferred stock dividends, by the weighted average number of common shares outstanding. Dilutive loss per share includes any additional dilution from common stock equivalents, such as stock options and warrants, and convertible instruments, if the impact is not antidilutive. Since the Company incurred net losses for the periods presented, all equity-linked instruments are considered anti-dilutive.

Comprehensive Loss

Comprehensive Loss - There were no components of comprehensive loss other than net loss for the years ended December 31, 2016, 2015 and 2014.

Income Taxes

Income Taxes - The Company’s income tax expense and deferred tax assets and liabilities reflect management’s best assessment of estimated future taxes to be paid. Significant judgments and estimates are required in determining the consolidated income tax expense.

Deferred income taxes arise from temporary differences between the tax and financial statement recognition of revenue and expense. In evaluating the Company’s ability to recover its deferred tax assets, management considers all available positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax planning strategies and recent financial operations. In projecting future taxable income, the Company develops assumptions including the amount of future state and federal pretax operating income, the reversal of temporary differences, and the implementation of feasible and prudent tax planning strategies. These assumptions require significant judgment about the forecasts of future taxable income, and are consistent with the plans and estimates that the Company is using to manage the underlying businesses. The Company provides a valuation allowance for deferred tax assets for which the Company does not consider realization of such deferred tax assets to be more likely than not.

Changes in tax laws and rates could also affect recorded deferred tax assets and liabilities in the future. Management is not aware of any such changes that would have a material effect on the Company’s results of operations, cash flows or financial position.

Use of Estimates

Use of Estimates - In preparing financial statements in conformity with generally accepted accounting principles, we are required to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements and revenues and expenditures during the reported periods. Actual results could differ materially from those estimates. Estimates may include those pertaining to valuation of inventories and mineralized material on leach pads, the estimated useful lives and valuation of properties, plant and equipment, mineral rights and properties, deferred tax assets, convertible preferred stock, derivative assets and liabilities, reclamation liabilities, stock-based compensation and payments, and contingent liabilities.

Recently Issued Accounting Pronouncements

Recently Issued Accounting Pronouncements – In October 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2016-16, Income Taxes (Topic 740). This standard is intended to improve the accounting for the income tax consequences of intra-entity transfers of assets other than inventory. ASU 2016-16 is effective for annual reporting periods beginning after December 15, 2017, including interim reporting periods within those annual reporting periods. The Company is currently evaluating the effect that adopting this new accounting guidance will have on its consolidated results of operations and financial position.

In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718). This standard is intended to simplify the accounting for several aspects of the accounting for equity-based compensation, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. ASU 2016-09 is effective for interim and annual reporting periods beginning after December 15, 2016, and early adoption is permitted. The Company is currently evaluating the effect that adopting this new accounting guidance will have on its consolidated results of operations and financial position.

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. Topic 842 affects any entity that enters into a lease, with some specified scope exceptions. For public business entities, the amendments in this update are effective for financial statements issued for annual periods beginning after December 15, 2018, and interim periods within those annual periods. Early application is permitted for all entities. The Company is currently evaluating the impact of adopting this standard on its consolidated financial statements, which will require right of use assets and lease liabilities be recorded in the consolidated balance sheet for operating leases.

In August 2014, the FASB issued ASU 2014-15. This ASU requires management to assess an entity’s ability to continue as a going concern by incorporating and expanding upon certain principles that are currently in U.S. auditing standards. Specifically, the ASU (1) provides a definition of the term substantial doubt, (2) requires an evaluation every reporting period including interim periods, (3) provides principles for considering the mitigating effect of management’s plans, (4) requires certain disclosures when substantial doubt is alleviated as a result of consideration of management’s plans, (5) requires an express statement and other disclosures when substantial doubt is not alleviated, and (6) requires an assessment for a period of one year after the date that the financial statements are issued (or available to be issued). This standard is effective for the fiscal years ending after December 15, 2016, and for annual periods and interim periods thereafter. The Company adopted this ASU in the fourth quarter of 2016, which required enhanced disclosure in Note 2.

In May 2014, the FASB issued ASU 2014-09 that introduces a new five-step revenue recognition model that an entity should use to recognize revenue when depicting the transfer of promised goods or services to customers in an amount that reflects the consideration that the entity expects to be entitled in exchange for those goods or services. This ASU also requires disclosures sufficient to enable users to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers, including qualitative and quantitative disclosures about contracts with customers, significant judgments and changes in judgments, and assets recognized from the costs to obtain or fulfill a contract. This standard is effective for fiscal years beginning after December 15, 2016, including interim periods within that reporting period. The Company is currently evaluating the new guidance to determine the impact it will have on its consolidated financial statements.

In November 2015, the FASB issued ASU 2015-17, Balance Sheet Classification of Deferred Taxes, which eliminates the current requirement to present deferred tax liabilities and assets as current and noncurrent amounts in a classified statement of financial position. Instead, entities will be required to classify all deferred tax assets and liabilities as noncurrent in a statement of financial position. This standard is effective financial statements issued for annual periods beginning after December 15, 2016, and interim periods within those annual periods. Early application is permitted. The Company elected early application of this ASU, which did not have a material impact on the consolidated financial statements.