Note 7 - Income Taxes (Tables)

12 Months Ended

Jun. 30, 2020

Notes Tables

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

Year Ended June 30,	2020			2019
Current:
Federal	$	(15,037	)	$	(13,277	)
State		3,501			25
Deferred		13,276			(13,251	)
Total income tax provision (benefit)	$	1,740		$	(26,503	)

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

Year Ended June 30,	2020			2019
Federal income tax liability (benefit) at statutory rate	$	(97,409	)	$	85,599
State income tax liability, net of federal income tax effect		2,765			20
(Decrease) increase in valuation allowance		61,948			(328,541	)
Current year permanent items		35,931			14,687
R&D credit		(22,568	)		(15,000	)
Return-to-provision		(30,040	)		8,433
Expiration of deferred tax assets		44,790			189,186
State tax rate change		18,962			-
Other		(12,639	)		19,087
Total income tax provision (benefit)	$	1,740		$	(26,529	)

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	2020			2019
Deferred income tax assets:
Deferred compensation	$	614,018		$	642,424
Stock-based compensation		249,313			228,981
Accrued expenses and reserves		479,112			503,726
Deferred revenue		146,841			202,102
Federal and state net operating loss carryforwards		606,730			558,117
Credit carryforwards		216,484			139,504
Equipment and leasehold improvements		134,045			122,714
Valuation allowance		(2,444,035	)		(2,382,087	)
Total deferred income tax assets		2,508			15,481
Deferred income tax liabilities:
Other		(2,508	)		(2,205	)
Net deferred income tax assets	$	-		$	13,276

Summary of Valuation Allowance [Table Text Block]

	Balance,			Decrease (Increase)
	beginning			in valuation			Balance,
Year Ended June 30,	of year			allowance			end of year
2020	$	(2,382,087	)	$	(61,948	)	$	(2,444,035	)
2019	$	(2,710,628	)	$	328,541		$	(2,382,087	)