v3.26.3
Cover
 12 Months Ended
Jun. 30, 2026
shares
Entity Addresses [Line Items]  
Document Type 20-F
Amendment Flag false
Document Registration Statement false
Document Annual Report true
Document Transition Report false
Document Shell Company Report false
Document Period End Date Jun. 30, 2026
Document Fiscal Period Focus FY
Document Fiscal Year Focus 2026
Current Fiscal Year End Date --06-30
Entity File Number 333-283829
Entity Registrant Name Hamco Ventures Limited
Entity Central Index Key 0002039079
Entity Incorporation, State or Country Code D8
Entity Address, Address Line One Room 706
Entity Address, Address Line Two 7th Floor Printing House
Entity Address, City or Town 6 Duddell Street Central
Entity Address, Country HK
Entity Address, Postal Zip Code 00000
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
Elected Not To Use the Extended Transition Period false
Document Accounting Standard U.S. GAAP
Entity Shell Company false
Entity Bankruptcy Proceedings, Reporting Current false
Entity Common Stock, Shares Outstanding 206,984,000
ICFR Auditor Attestation Flag false
Document Financial Statement Error Correction [Flag] false
Auditor Name TAAD, LLP
Auditor Firm ID 5854
Auditor Location Diamond Bar, California
Business Contact [Member]  
Entity Addresses [Line Items]  
Entity Address, Address Line One Room 706
Entity Address, Address Line Two 7th Floor Printing House
Entity Address, City or Town 6 Duddell Street Central
Entity Address, Country HK
Entity Address, Postal Zip Code 00000
City Area Code 852
Local Phone Number 2333-8738
Contact Personnel Name Mr. Chun Leung Chow (Eddy)
Contact Personnel Email Address info@hamcoventures.com