Document And Entity Information - USD ($)	12 Months Ended
	Sep. 30, 2021	Dec. 20, 2021	Mar. 31, 2021
Document Information Line Items
Entity Registrant Name	BANTEC, INC.
Document Type	10-K
Current Fiscal Year End Date	--09-30
Entity Common Stock, Shares Outstanding		2,693,360,585
Entity Public Float			$ 19,423,527
Amendment Flag	false
Entity Central Index Key	0001704795
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Non-accelerated Filer
Entity Well-known Seasoned Issuer	No
Document Period End Date	Sep. 30, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Shell Company	false
Entity Ex Transition Period	false
Document Annual Report	true
Document Transition Report	false
Entity File Number	000-55789
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	30-0967943
Entity Address, Address Line One	195 Paterson Avenue
Entity Address, City or Town	Little Falls
Entity Address, State or Province	NJ
Entity Address, Postal Zip Code	07424
City Area Code	(203)
Local Phone Number	220-2296
Title of 12(g) Security	COMMON STOCK, $0.0001 PAR VALUE
Entity Interactive Data Current	Yes