Document and Entity Information - shares	3 Months Ended
	Sep. 30, 2020	Nov. 12, 2020
Document and Entity Information
Document Type	10-Q
Document Period End Date	Sep. 30, 2020
Entity Registrant Name	TEB Bancorp, Inc.
Title of 12(b) Security	None
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		2,624,343
Entity Central Index Key	0001751700
Current Fiscal Year End Date	--06-30
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Amendment Flag	false