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Note 3 - Income Taxes | 12 Months Ended
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Sep. 30, 2021
Notes to Financial Statements |
Income Tax Disclosure [Text Block] | NOTE 3 – INCOME TAXES Components of income tax expense are as follows for the years ended:
|  | September 30, |  |  | September 30, |
|  | 2021 |  |  | 2020 |
Current: |  |  |  |  |  |  |  |
Federal |  | $ | 5,154,287 |  |  | $ | 1,966,491 |
State |  |  | 439,944 |  |  |  | 175,201 |
Current income tax expense |  |  | 5,594,231 |  |  |  | 2,141,692 |
Deferred: |  |  |  |  |  |  |  |
Federal |  |  | (234,297 | ) |  |  | (252,929 | )
State |  |  | 46,947 |  |  |  | (26,879 | )
Deferred income tax expense |  |  | (187,350 | ) |  |  | (279,808 | )
Income tax expense |  | $ | 5,406,881 |  |  | $ | 1,861,884 |
The following is a reconciliation of the federal statutory income tax rate to the effective tax rate as a percent of pre-tax income for the following years ended:
|  | September 30, |  |  | September 30, |
|  | 2021 |  |  | 2020 |
Federal statutory rate |  |  | 21.0 | % |  |  | 21.0 | %
State income taxes |  |  | 2.2 | % |  |  | 2.0 | %
Permanent differences: |  |  |  |  |  |  |  |
Change in valuation allowance |  |  | - |  |  |  | (0.5% | )
Expiration and utilization of state NOL’s |  |  | - |  |  |  | 0.4 | %
Research and development credits |  |  | (0.7% | ) |  |  | (2.5% | )
Excess tax expense (benefits) from stock-based compensation |  |  | (1.5% | ) |  |  | (0.1% | )
Tax rate |  |  | 21.0 | % |  |  | 20.3 | %
As of September 30, 2021 and 2020, the current income tax payable was approximately $933,000 and $845,000, respectively. Current income tax payable amounts are included in Accrued Expenses in the Company’s balance sheets. As of September 30, 2021 and 2020, the Company had no U.S. federal net operating loss (“NOL”) carry-forwards. The state NOL carryforwards of $769,000 at September 30, 2020 were fully utilized during fiscal 2021 resulting in no state NOL carryforwards at September 30, 2021. In addition, as of September 30, 2021, the Company had Minnesota research and development tax credits of $300,033. As of September 30, 2020, the Company had Minnesota research and development and alternative minimum tax credits of $337,000 and $32,000, respectively. The Company has not recorded a valuation allowance on these research and development related deferred tax assets as the Company believes it is more likely than not they will be utilized before they begin to expire in fiscal year 2031. Significant components of deferred income tax assets and liabilities are as follows at:
|  | September 30, |  |  | September 30, |
|  | 2021 |  |  | 2020 |
Deferred income tax assets (liabilities): |  |  |  |  |  |  |  |
Intangibles |  | $ | (91,924 | ) |  | $ | (86,319 | )
Property and equipment depreciation |  |  | (379,572 | ) |  |  | (419,896 | )
Net operating loss carry forwards and credits |  |  | 300,032 |  |  |  | 351,446 |
Stock-based compensation |  |  | 230,553 |  |  |  | 169,730 |
Inventories |  |  | 518,526 |  |  |  | 386,296 |
Prepaid expenses |  |  | (48,505 | ) |  |  | (43,233 | )
Accrued expenses and reserves |  |  | 519,408 |  |  |  | 467,010 |
Goodwill |  |  | (683,051 | ) |  |  | (646,916 | )
Gross deferred tax asset (liability) |  |  | 365,467 |  |  |  | 178,118 |
Valuation allowance |  |  | - |  |  |  | - |
Net deferred tax asset (liability) |  | $ | 365,467 |  |  | $ | 178,118 |
Realization of NOL carryforwards and other deferred tax temporary differences are contingent upon future taxable earnings. The Company’s deferred tax assets were reviewed for expected utilization by assessing the available positive and negative factors surrounding their recoverability. As of September 30, 2021 and 2020, no valuation allowance was deemed necessary as the Company determined it was more likely than not that the Company’s deferred tax assets will be realized. The valuation allowance activity for the years ended September 30, 2021 and 2020 is as follows:
Year Ended |  | Balance at Beginning of Year |  |  | Income Tax Benefit |  |  | Reversal for State NOL Expiration and Utilization |  |  | Balance at End of Year |
September 30, 2021 |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |
September 30, 2020 |  | $ | 47,014 |  |  | $ | (5,235 | ) |  | $ | (41,779 | ) |  | $ | - |
The Company is required to recognize the financial statement benefit of a tax position only after determining that the relevant tax authority would more likely than not sustain the position following an audit. For tax positions meeting the more likely than not threshold, the amount recognized in the financial statements is the largest benefit that has a greater than 50 percent likelihood of being realized upon ultimate settlement with the relevant tax authority. The Company applies the interpretation to all tax positions for which the statute of limitations remained open. The Company had no liability for unrecognized tax benefits and did not recognize any interest or penalties during the years ended September 30, 2021 or 2020. The Company is subject to income taxes in the U.S. federal jurisdiction, and various state jurisdictions. Tax regulations within each jurisdiction are subject to the interpretation of the related tax laws and regulations and require significant judgment to apply. With few exceptions, the Company is no longer subject to U.S. federal, state and local income tax examinations by tax authorities for fiscal years ending prior to 2004. We are generally subject to U.S. federal and state tax examinations for all tax years since 2004 due to our NOL carryforwards and the utilization of the carryforwards in years still open under statute.

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- Definition The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32857-109319 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 11.C) -URI http://asc.fasb.org/extlink&oid=122134291&loc=d3e330215-122817 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 17 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32809-109319 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I.5.Q1) -URI http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32705-109319 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 270 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6424409&loc=d3e44925-109338 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -URI http://asc.fasb.org/topic&trid=2144680 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6424122&loc=d3e41874-109331 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(2)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
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