NOTE 22: INCOME TAXES
A reconciliation of income tax expense (benefit) computed using the federal statutory rate to the income tax expense (benefit) in our consolidated statements of operations is as follows (in thousands):
| Year ended December 31, | 2016 | 2015 | ||||||
| Tax benefit computed at federal statutory rate | $ | (2,216 | ) | $ | (1,133 | ) | ||
| State taxes, net of federal benefit | (156 | ) | (127 | ) | ||||
| Increase valuation allowance | 2,048 | 735 | ||||||
| State NOL expiration/write-off | 321 | 39 | ||||||
| Adjustment to income tax accruals | 5 | 423 | ||||||
| State research credit expiration | 3 | 65 | ||||||
| Non-deductible expenses | 3 | 3 | ||||||
| Other, net | — | 1 | ||||||
| Total income tax expense | $ | 8 | $ | 6 | ||||
Deferred tax assets (liabilities) are comprised of the following (in thousands):
| December 31, | 2016 | 2015 | ||||||
| Accounts receivable | $ | 36 | $ | 141 | ||||
| Employee compensation and benefits | 100 | 91 | ||||||
| Contingent consideration | (169 | ) | (268 | ) | ||||
| Amortization | 1,305 | 1,089 | ||||||
| Deferred acquisition costs | 245 | 265 | ||||||
| NOL and tax credit carryforwards | 34,807 | 32,895 | ||||||
| Warranty accrual | 18 | 15 | ||||||
| Severance accrual | — | 97 | ||||||
| Other, net | 60 | 34 | ||||||
| Deferred tax assets (liabilities), net | $ | 36,402 | $ | 34,359 | ||||
| Less valuation allowance | (36,421 | ) | (34,372 | ) | ||||
| Net deferred tax assets (liabilities) | $ | (19 | ) | $ | (13 | ) | ||
We record the benefit we will derive in future accounting periods from tax losses and credits and deductible temporary differences as “deferred tax assets.” We record a valuation allowance to reduce the carrying value of our net deferred tax assets if, based on all available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized. Since 2009, we have maintained a valuation allowance to fully reserve our deferred tax assets. We recorded a full valuation allowance in 2009 because we determined there was not sufficient positive evidence regarding our potential for future profits to outweigh the negative evidence of our three-year cumulative loss position at that time. We expect to continue to maintain a full valuation allowance until we determine that we can sustain a level of profitability that demonstrates our ability to realize these assets. To the extent we determine that the realization of some or all of these benefits is more likely than not based upon expected future taxable income, a portion or all of the valuation allowance will be reversed. Such a reversal would be recorded as an income tax benefit and, for some portion related to deductions for stock option exercises, an increase in shareholders’ equity.
ATRM has federal NOLs of approximately $97 million that will begin to expire in 2020 if not utilized. We also have state NOLs of approximately $34 million that will expire at various times, beginning in 2017, if not utilized. We also have federal and state research tax credit carryforwards of approximately $1.3 million that will expire at various times, beginning in 2017, if not utilized. The utilization of NOLs and research tax credit carryforwards may be subject to changes in tax regulations and/or to annual limitations as a result of changes in ownership that may already have occurred or future changes in ownership pursuant to the requirements of Section 382 of the Code. Such limitations could result in the expiration of NOL and tax credit carryforwards before utilization.
Our federal and state operating loss carryforwards include windfall tax deductions from stock option exercises. The amount of windfall tax benefit recognized in additional paid-in capital is limited to the amount of benefit realized currently in income taxes payable. As of December 31, 2016, ATRM had suspended additional paid-in capital credits of $1.3 million related to windfall tax deductions. Upon realization of the NOLs from such windfall tax deductions, we would record a benefit of up to $1.3 million in additional paid-in capital.
We assessed our income tax positions at December 31, 2016 and 2015 for all years subject to examination and determined that our unrecognized tax positions were immaterial at those dates.
ATRM is subject to income tax examinations in the U.S. federal and certain state jurisdictions. Our 2013 and 2012 federal income tax returns were reviewed by the Internal Revenue Service during fiscal years 2015 and 2014, respectively, and resulted in no adjustments. Federal tax returns are subject to review for fiscal years 2014 through 2016 and state income tax returns are subject to review for fiscal years 2012 through 2016.