v3.26.1
Cover - $ / shares
9 Months Ended
Mar. 31, 2026
May 07, 2026
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Mar. 31, 2026  
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2026  
Current Fiscal Year End Date --06-30  
Entity File Number 001-41956  
Entity Registrant Name AtlasClear Holdings, Inc.  
Entity Central Index Key 0001963088  
Entity Tax Identification Number 92-2303797  
Entity Incorporation, State or Country Code DE  
Entity Address, Address Line One 2203 Lois Avenue  
Entity Address, Address Line Two Suite 814  
Entity Address, City or Town Tampa  
Entity Address, State or Province FL  
Entity Address, Postal Zip Code 33607  
City Area Code (727)  
Local Phone Number 446-6660  
Title of 12(b) Security Common Stock, $0.0001 par value per share  
Trading Symbol ATCH  
Security Exchange Name NYSEAMER  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Elected Not To Use the Extended Transition Period false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   150,337,774
Entity Listing, Par Value Per Share $ 0.0001