7. INCOME TAXES
The Company accounts for income taxes pursuant to ASC Topic 740-10, "Accounting for Income Taxes". ASC Topic 740-10 utilizes the liability method of computing deferred income taxes.
Income tax differed from the amounts computed by applying an effective United States federal income tax rate of 34% to pretax income in 2016, 2015 and 2014 as a result of the following:
| 2016 | 2015 | 2014 | |
| Computed expected tax expense (benefit) | $ (671,000) | $ (2,735,000) | $ 1,290,000 |
| Miscellaneous timing differences | |||
| related to book and tax depletion | |||
| differences and the expensing of | |||
| intangible drilling costs | 380,000 | 1,978,000 | (764,000) |
| NOL Carryforward | 118,000 | - | - |
| Correction of prior year estimate | - | (171,000) | - |
| Expected Federal income tax expense (benefit) | $ (173,000) | $ (928,000) | $ 526,000 |
| Income tax expense (benefit) for the years ended December 31, 2016, 2015 and 2014 consisted of the following: | |||
| 2016 | 2015 | 2014 | |
| Federal income taxes (benefit) | $ (173,000) | $ (928,000) | $ 526,000 |
| State income taxes | - | - | - |
| Current income tax provision (benefit) | $ (173,000) | $ (928,000) | $ 526,000 |
Deferred income taxes reflect the effects of temporary differences between the tax bases of assets and liabilities and the reported amounts of those assets and liabilities for financial reporting purposes. Deferred income taxes also reflect the value of investment tax credits and an offsetting valuation allowance. The Company's total deferred tax assets and corresponding valuation allowance at December 31, 2016 and 2015 consisted of the following:
| December 31, | ||
| 2016 | 2015 | |
| Deferred tax assets | ||
| Depletion and amortization | 1,137,000 | 1,186,000 |
| Expired leasehold | 250,000 | 190,000 |
| Other, net | 7,000 | 7,000 |
| Total deferred tax assets | 1,394,000 | 1,383,000 |
| Deferred tax liabilities | ||
| Intangible drilling costs | (1,323,000) | (1,801,000) |
| Depreciation | (89,000) | (72,000) |
| Total deferred tax liability | (1,412,000) | (1,873,000) |
| Net deferred income tax payable | $ (18,000) | $ (490,000) |