v3.25.2
10. Income Taxes: Schedule of Effective Income Tax Rate Reconciliation (Tables)
12 Months Ended
May 31, 2025
Tables/Schedules  
Schedule of Effective Income Tax Rate Reconciliation

 

2025

 

2024

 

Computed tax provision at the expected statutory rate

$2,317,000  

 

$2,293,400  

 

Tax effect of permanent differences:

 

 

 

 

Research tax credits

(489,692) 

 

(407,675) 

 

Foreign-derived intangible income deduction

(224,700) 

 

(142,100) 

 

Stock option costs

(11,682) 

 

48,500  

 

Other permanent differences

24,300  

 

2,800  

 

Other

4,774  

 

127,075  

 

$1,620,000  

 

$1,922,000  

 

Effective income tax rate

14.7% 

 

17.6%