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Federal Income Taxes (Tables)
12 Months Ended
May 31, 2018
Income Tax Disclosure [Abstract]  
Summary of Deferred Taxes

Deferred taxes as of May 31, 2018 and 2017 are as follows:

 

    2018     2017  
Deferred tax asset:                
Net operating loss carryforward   $ 2,015,616     $ 2,102,924  
Accrued expenses     101,320       113,021  
Allowance for doubtful accounts     -       8,788  
Other     27,432       27,540  
Total deferred tax asset     2,144,368       2,252,273  
Deferred tax liability:                
Depreciation and amortization, tax reporting
in excess of financial
    (2,635,333 )     (1,970,858 )
Net deferred tax asset (liability)   $ (490,965 )   $ 281,415  

Summary of Net Change in Deferred Taxes

The net change in deferred taxes for the year ended May 31, 2018 and 2017 is as follows:

 

    2018     2017  
Net operating loss carryforward   $ (87,308 )   $ (229,465 )
Depreciation and amortization, tax reporting                
 in excess of financial     (664,475 )     (911,766 )
Stock compensation costs     -       18,124  
Allowance for doubtful accounts     (8,788 )     4,280  
Accrued expenses     (11,701 )     113,021  
Other     (108 )     3,539  
Net decrease   $ (772,380 )   $ (1,002,267 )

Summary of Provision for Income Taxes

The provision for income taxes at May 31, 2018 and 2017 consists of the following:

 

    2018     2017  
Current income tax – Federal and State   $ -     $ 9,723  
Deferred income tax provision     772,380       1,002,267  
Provision for income taxes   $ 772,380     $ 1,011,990  

Summary of Provision for Income Taxes for Federal Statutory Rate

Greystone’s provision for income taxes for the years ended May 31, 2018 and 2017 differs from the federal statutory rate as follows:

 

    2018     2017  
Tax provision using statutory rates     21 %     34 %
State income taxes     9       -  
Federal tax rate change adjustment     (2 )     -  
Expiring net operating losses     3       -  
VIE income passed to members     (2 )     (3 )
Tax provision per financial statements     29 %     31 %

Summary of Net Operating Loss for Federal Income Tax

   

NOL

Carryforward

   

Year

Expiring

 
Cumulative through May 31, 2005   $ 1,575,000       2019 - 2025  
Year ended May 31, 2006     120,983       2026  
Year ended May 31, 2007     2,151,837       2027  
Year ended May 31, 2011     746,484       2031  
Year ended May 31, 2015     321,625       2035  
Year Ended May 31, 2016     1,060,747       2036  
Year Ended May 31, 2018     1,481,098         N/A