Income Taxes (Tables)

12 Months Ended

May 31, 2020

Income Tax Disclosure [Abstract]

Provision for income taxes

	Year ended May 31,
	2020			2019
Current provision for continued operations		(14,368	)		8,783
Current provision for discontinued operations		60,677			17,655
Deferred provision		999,420			329,035
Change in valuation allowance		(999,420	)		(329,035	)
Total provision for income taxes	$	46,039		$	26,438

Deferred tax assets

	2020			2019
Basis difference for assets	$	162,853		$	182,654
Inventory related items		75,500			169,585
Other reserves and liabilities		112,829			74,694
Net operating loss carryforward		624,650			1,507,141
General business and other credit carry forward		455,841			489,327
Other deferred items, net		-			7,692
Gross deferred tax assets		1,431,673			2,431,093
Deferred tax asset valuation allowance		(1,431,673	)		(2,431,093	)
Net deferred tax assets	$	-		$	-

Effective income tax rate reconciliation

	2020			2019
Statutory Federal Rate		21.0	%		21.0	%
State Taxes, net of federal benefit		5.3	%		5.3	%
Change in deferred tax valuation allowance		-27.1	%		-25.7	%
Impact of Tax Act		0	%		0.0	%
Stock-based compensation		0	%		-1.8	%
R&E tax credits		0.2	%		1.8	%
Effect of foreign income tax rates		-0.1	%		-3.4	%
Deferred tax true-up		0.0	%		4.1	%
State minimum taxes		1.7	%		-1.0	%
Permanent and other differences		0.2	%		-2.5	%
Effective Tax Rate		1.2	%		-2.2	%