Document And Entity Information - shares	9 Months Ended
	Mar. 31, 2025	May 06, 2025
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2025
Document Transition Report	false
Entity File Number	033-79130
Entity Registrant Name	CONSUMERS BANCORP, INC.
Entity Incorporation, State or Country Code	OH
Entity Tax Identification Number	34-1771400
Entity Address, Address Line One	614 East Lincoln Way, P.O. Box 256
Entity Address, City or Town	Minerva
Entity Address, State or Province	OH
Entity Address, Postal Zip Code	44657
City Area Code	330
Local Phone Number	868-7701
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 (in shares)		3,131,933
Entity Central Index Key	0001006830
Current Fiscal Year End Date	--06-30
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q3
Amendment Flag	false