Cover - USD ($)	12 Months Ended
	Mar. 31, 2025	May 20, 2025	Sep. 30, 2024
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Document Financial Statement Error Correction [Flag]	false
Entity Interactive Data Current	Yes
ICFR Auditor Attestation Flag	true
Amendment Flag	false
Document Period End Date	Mar. 31, 2025
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	FY
Entity Information [Line Items]
Entity Registrant Name	ePlus inc.
Entity Central Index Key	0001022408
Entity File Number	1-34167
Entity Tax Identification Number	54-1817218
Entity Incorporation, State or Country Code	DE
Current Fiscal Year End Date	--03-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Public Float			$ 2,581,036,655
Entity Contact Personnel [Line Items]
Entity Address, Address Line One	13595 Dulles Technology Drive
Entity Address, City or Town	Herndon
Entity Address, State or Province	VA
Entity Address, Postal Zip Code	20171-3413
Entity Phone Fax Numbers [Line Items]
City Area Code	703
Local Phone Number	984-8400
Entity Listings [Line Items]
Title of 12(b) Security	Common Stock, $.01 par value
Trading Symbol	PLUS
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		26,526,783