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12. INCOME TAXES (Tables)
12 Months Ended
Dec. 31, 2020
Income Tax Disclosure [Abstract]  
Schedule of income taxes
    Current     Deferred     Total  
Year Ended December 31, 2019:                  
U.S. federal   $ ––     $ ––     $ ––  
State and local     10,792       ––       10,792  
Foreign     14,073       ––       14,073  
    $ 24,865     $ ––     $ 24,865  
Year Ended December 31, 2020:                        
U.S. federal   $ ––     $ ––     $ ––  
State and local     11,752       ––       11,752  
Foreign     14,964       ––       14,964  
    $ 26,716     $ ––     $ 26,716  
Schedule of income tax reconciliation

    2019     2020  
Computed "expected" US benefit at Federal statutory rate   $ (685,652 )   $ (807,799 )
Change resulting from:                
     State and local income taxes, net of federal income tax benefit     (102,770 )      (145,891 )
     Valuation allowance     411,810       (121,000 ) 
     Non––deductible items     87,998       394,236  
     Expired Federal net operating loss     218,376       1,043,171  
     Federal and state rate changes     95,103       (113,340 )
     Non-taxable PPP loan forgiveness     ––       (222,661 )
           Income tax expense    $ 24,865     $ 26,716  

 

Schedule of deferred tax assets
    2019     2020  
Deferred income tax assets:            
     Inventories   $ 145,884     $ 241,874  
     Accounts receivable     253,559       445,392  
     Accrued expenses     80,068       116,254  
     Net operating loss and tax credit carry forwards     13,276,081       15,243,998  
     Plant and equipment     6,014       39,521  
     Stock compensation     123,841       448,375  
     Lease accounting     26,515       248  
     Other – interest expense     12,385       24,009  
Total deferred income tax assets     13,924,347       16,559,671  
Valuation allowance     (13,924,347 )     (16,559,671 )
Net deferred tax assets   $ ––     $ ––