v3.25.4
Document and Entity Information
 12 Months Ended
Dec. 31, 2025
shares
Document and Entity Information  
Document Type 40-F
Document Registration Statement false
Document Annual Report true
Document Period End Date Dec. 31, 2025
Securities Act File Number 001-42611
Entity Registrant Name IsoEnergy Ltd.
Entity Incorporation, State or Country Code Z4
Entity Primary SIC Number 1090
Entity Tax Identification Number 00-0000000
Entity Address, Address Line One 217 Queen Street West, Suite 401
Entity Address, City or Town Toronto
Entity Address, State or Province ON
Entity Address, Postal Zip Code M5V 0R2
Entity Address, Country CA
City Area Code 833
Local Phone Number 572-2333
Title of 12(b) Security Common Shares, no par value
Trading Symbol ISOU
Security Exchange Name NYSE
Annual Information Form true
Audited Annual Financial Statements true
Entity Common Stock, Shares Outstanding 54,928,896
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Emerging Growth Company true
Entity Ex Transition Period false
ICFR Auditor Attestation Flag false
Document Financial Statement Error Correction [Flag] false
Auditor Firm ID 85
Auditor Name KPMG LLP
Auditor Location Vancouver, British Columbia, Canada
Entity Central Index Key 0001997377
Current Fiscal Year End Date --12-31
Document Fiscal Year Focus 2025
Document Fiscal Period Focus FY
Amendment Flag false
Business Contact  
Document and Entity Information  
Contact Personnel Name CT Corporation
Entity Address, Address Line One 28 Liberty Street
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10005
City Area Code 212
Local Phone Number 894-8940