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Note 12 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) | Oct. 31, 2021 | Oct. 31, 2020
--- | --- | ---
Accounts receivable, due to allowances for doubtful accounts and sales returns | $ 30,238 | $ 139,809
Inventories, due to allowance for damaged and slow-moving inventories and additional costs inventoried for tax purposes pursuant to the Tax Reform Act of 1986 | 873,433 | 764,183
Liabilities recorded for accrued expenses, deductible for tax purposes when paid | 187,108 | 294,857
Share-based compensation expense | 59,622 | 16,814
Section 163(j) interest | 18,527 | 254,520
Expenses incurred related to expected PPP Loan forgiveness | 0 | 1,162,161
Net operating loss carryforwards | 3,114,714 | 2,163,956
AMT credit carryforwards | 0 | 25,003
Other | 33,383 | 53,136
Total gross deferred tax assets | 4,317,025 | 4,874,439
Valuation allowance | (4,280,823) | (4,759,862)
Net deferred tax assets | 36,202 | 114,577
Plant and equipment, due to differences in depreciation and capital gain recognition | (36,202) | (86,997)
Other receivables, due to accrual for financial reporting purposes | 0 | (2,577)
Total gross deferred tax liabilities | (36,202) | (89,574)
Net deferred tax asset | $ 0 | $ 25,003

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