Income Taxes - Effective income tax rate (Details) |
3 Months Ended | 5 Months Ended | 6 Months Ended | 12 Months Ended | |
|---|---|---|---|---|---|
Jun. 30, 2021 |
Jun. 30, 2020 |
Jun. 30, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
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| Reconciliation of the U.S. federal statutory income tax rate to the Company's effective income tax rate | |||||
| State income taxes, net of federal benefit | 0.00% | 0.00% | 0.00% | ||
| Evolv Technologies Holdings, Inc. | |||||
| Reconciliation of the U.S. federal statutory income tax rate to the Company's effective income tax rate | |||||
| Federal statutory income tax rate | 21.00% | 21.00% | |||
| State income taxes, net of federal benefit | 3.90% | 1.90% | |||
| Federal and state research and development tax credits | 7.30% | 5.00% | |||
| Change in valuation allowance | (33.70%) | (23.20%) | |||
| Change in tax rate | 1.30% | (3.00%) | |||
| Permanent differences | (0.30%) | (1.40%) | |||
| Other | 0.50% | (0.30%) | |||
| Effective income tax rate | 0.00% | 0.00% | |||
| X | ||||||||||
- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the income tax rates. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible expenses. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to research tax credit. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Details
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