Cover Page - shares	6 Months Ended
	Dec. 31, 2021	Jan. 20, 2022
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Dec. 31, 2021
Document Transition Report	false
Entity File Number	001-37709
Entity Registrant Name	AXOS FINANCIAL, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	33-0867444
Entity Address, Address Line One	9205 West Russell Road, Suite 400
Entity Address, City or Town	Las Vegas
Entity Address, State or Province	NV
Entity Address, Postal Zip Code	89148
City Area Code	858
Local Phone Number	649-2218
Title of 12(b) Security	Common stock, $0.01 par value
Trading Symbol	AX
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		59,501,899
Entity Central Index Key	0001299709
Current Fiscal Year End Date	--06-30
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Amendment Flag	false