Document and Entity Information - shares	6 Months Ended
	Nov. 30, 2024	Jan. 03, 2025
Registrant CIK	0000096536
Fiscal Year End	--05-31
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Nov. 30, 2024
Document Transition Report	false
Securities Act File Number	0-3498
Entity Registrant Name	Taylor Devices, Inc.
Entity Incorporation, State or Country Code	NY
Entity Tax Identification Number	16-0797789
Entity Address, Address Line One	90 Taylor Drive
Entity Address, City or Town	North Tonawanda
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	14120
Entity Address, Address Description	Address of principal executive offices
City Area Code	716
Local Phone Number	694-0800
Phone Fax Number Description	Registrant’s telephone number, including area code
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		3,136,209
Amendment Flag	false
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q2
Common Class A
Title of 12(b) Security	Common Stock, $.025 par value per share
Trading Symbol	TAYD
Security Exchange Name	NASDAQ
Series A Preferred Stock
Title of 12(b) Security	Preferred Stock Purchase Rights