v3.26.1
Cover - shares
 12 Months Ended
Apr. 30, 2026
Apr. 30, 2025
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 Apr. 30, 2026  
Document Fiscal Period Focus FY  
Document Fiscal Year Focus 2026  
Current Fiscal Year End Date --04-30  
Entity File Number 001-42952  
Entity Registrant Name Phaos Technology Holdings (Cayman) Limited  
Entity Central Index Key 0002024258  
Entity Incorporation, State or Country Code E9  
Entity Address, Address Line One 55 Ayer Rajah Crescent  
Entity Address, Address Line Two #5-05  
Entity Address, City or Town Singapore  
Entity Address, Country SG  
Entity Address, Postal Zip Code 139949  
Title of 12(b) Security Class A Ordinary shares, par value $0.0001 per Class A Ordinary Share  
Trading Symbol POAS  
Security Exchange Name NYSEAMER  
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  
ICFR Auditor Attestation Flag false  
Document Financial Statement Error Correction [Flag] false  
Auditor Firm ID 6783 6651
Auditor Name Assentsure PAC Kreit & Chiu CPA LLP
Auditor Location Singapore Los Angeles, California
Auditor Opinion [Text Block] We have audited the accompanying consolidated balance sheet of Phaos Technology Holdings (Cayman) Ltd. (the “Company”) as of April 30, 2026, the related consolidated statements of operations and comprehensive income, changes in equity, and cash flows for the year ended April 30, 2026, and the related notes (collectively referred to as the “Financial Statements”). In our opinion, the financial statements present fairly, in all material respects, the consolidated financial position of the Company as of April 30, 2026, and the consolidated results of its operations and its cash flows for the year ended April 30, 2026, in conformity with accounting principles generally accepted in the United States of America (“US GAAP”).  
Common Class A [Member]    
Entity Addresses [Line Items]    
Entity Common Stock, Shares Outstanding 16,446,750  
Common Class B [Member]    
Entity Addresses [Line Items]    
Entity Common Stock, Shares Outstanding 15,125,251  
Business Contact [Member]    
Entity Addresses [Line Items]    
Entity Address, Address Line One 55 Ayer Rajah Crescent  
Entity Address, Address Line Two #05-05  
Entity Address, City or Town Singapore  
Entity Address, Country SG  
Entity Address, Postal Zip Code 139949  
City Area Code +65  
Local Phone Number 6250 3877  
Contact Personnel Name Gan Hong Loon  
Contact Personnel Email Address hongloon@phaostech.com