Document and Entity Information - USD ($)	12 Months Ended
	Sep. 30, 2019	Jan. 10, 2020
Document and Entity Information [Abstract]
Entity Registrant Name	Bantek Inc.
Entity Central Index Key	0001704795
Amendment Flag	false
Current Fiscal Year End Date	--09-30
Document Type	10-K
Document Period End Date	Sep. 30, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Public Float	$ 300,000
Entity Common Stock, Shares Outstanding		3,255,346,130
Entity File Number	000-55789
Entity Interactive Data Current	Yes
Entity Incorporation State Country Code	DE