Document and Entity Information - USD ($)	12 Months Ended
	Sep. 30, 2024	Nov. 29, 2024	Mar. 31, 2024
Details
Registrant CIK	0000775057
Fiscal Year End	--09-30
Registrant Name	ALTEX INDUSTRIES INC
SEC Form	10-K
Period End date	Sep. 30, 2024
Tax Identification Number (TIN)	84-0989164
Number of common stock shares outstanding		11,229,520
Public Float			$ 1,058,000
Filer Category	Non-accelerated Filer
Current with reporting	Yes
Interactive Data Current	Yes
Voluntary filer	No
Well-known Seasoned Issuer	No
Shell Company	false
Small Business	true
Emerging Growth Company	false
Document Financial Statement Error Correction	false
Document Annual Report	true
Document Transition Report	false
Securities Act File Number	1-9030
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	700 Colorado Blvd
Entity Address, Address Line Two	#273
Entity Address, City or Town	Denver
Entity Address, State or Province	CO
Entity Address, Postal Zip Code	80206-4084
Entity Address, Address Description	Address of principal executive offices
City Area Code	303
Local Phone Number	265-9312
Amendment Flag	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Auditor Name	M&K CPAS, PLLC
Auditor Firm ID	2738
Auditor Location	The Woodlands, TX