Document and Entity Information - shares	3 Months Ended
	Dec. 31, 2020	Feb. 17, 2021
Cover [Abstract]
Entity Registrant Name	Financial Gravity Companies, Inc.
Entity Central Index Key	0001377167
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Dec. 31, 2020
Amendment Flag	false
Current Fiscal Year End Date	--09-30
Is Entity's Reporting Status Current?	Yes
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		83,618,412
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2021
Entity small business	true
Entity emerging growth	false
Entity Shell company	false
Interactive data current	Yes
Incorporation state	NV
Entity file number	001-34770