v3.26.3
Document And Entity Information
 12 Months Ended
Jun. 30, 2026
shares
Document Information [Line Items]  
Entity Central Index Key 0001905920
Document Type 20-F
Document Registration Statement false
Document Annual Report true
Current Fiscal Year End Date --06-30
Document Period End Date Jun. 30, 2026
Document Fiscal Year Focus 2026
Document Transition Report false
Document Shell Company Report false
Entity File Number 001-42269
Entity Registrant Name Galaxy Payroll Group Limited
Entity Incorporation, State or Country Code D8
Entity Address, Address Line One 25th Floor
Entity Address, Address Line Two Ovest
Entity Address, Address Line Three 77 Wing Lok Street
Entity Address, City or Town Sheung Wan
Entity Address, Country HK
Entity Address, Postal Zip Code 000000
Title of 12(b) Security Class A Ordinary Shares, par value US$0.00625 per share
Trading Symbol GLXG
Security Exchange Name NASDAQ
Entity Well-known Seasoned Issuer No
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Non-accelerated Filer
Entity Emerging Growth Company true
Entity Ex Transition Period false
ICFR Auditor Attestation Flag false
Document Financial Statement Error Correction [Flag] false
Document Accounting Standard U.S. GAAP
Entity Shell Company false
Amendment Flag false
Document Fiscal Period Focus FY
Class A Ordinary Shares  
Document Information [Line Items]  
Entity Common Stock, Shares Outstanding 5,601,515
Class B Ordinary Shares  
Document Information [Line Items]  
Entity Common Stock, Shares Outstanding 360,000
Business Contact  
Document Information [Line Items]  
Entity Address, Address Line One 25th Floor
Entity Address, Address Line Two Ovest77 Wing Lok Street
Entity Address, City or Town Sheung Wan
Entity Address, Country HK
Contact Personnel Name Lao Wai Hong, Chief Executive Officer
Entity Address, State or Province DE
Entity Address, Postal Zip Code 000000
City Area Code 852
Local Phone Number 3105 2611