Annual and transition report of foreign private issuers [Sections 13 or 15(d)]

Document and Entity Information

v3.26.1
Document and Entity Information - shares
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
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 Dec. 31, 2025  
Document Fiscal Period Focus FY  
Document Fiscal Year Focus 2025  
Current Fiscal Year End Date --12-31  
Entity File Number 001-40858  
Entity Registrant Name XORTX Therapeutics Inc.  
Entity Central Index Key 0001729214  
Entity Incorporation, State or Country Code A1  
Entity Address, Address Line One 3710 — 33rd Street NW  
Entity Address, City or Town Calgary  
Entity Address, State or Province AB  
Entity Address, Country CA  
Entity Address, Postal Zip Code T2L 2M1  
Title of 12(b) Security Common Shares  
Trading Symbol XRTX  
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  
Elected Not To Use the Extended Transition Period false  
Document Accounting Standard International Financial Reporting Standards  
Entity Shell Company false  
Document Financial Statement Error Correction [Flag] false  
Entity Common Stock, Shares Outstanding 6,962,218  
Auditor Firm ID 731 995
Auditor Name DAVIDSON & COMPANY LLP Smythe LLP
Auditor Location Vancouver, Canada Vancouver, Canada
Business Contact [Member]    
Entity Addresses [Line Items]    
Entity Address, Address Line One 3710 — 33rd Street NW  
Entity Address, City or Town Calgary  
Entity Address, State or Province AB  
Entity Address, Country CA  
Entity Address, Postal Zip Code T2L 2M1  
Country Region 1  
City Area Code 403  
Local Phone Number 455-7727  
Contact Personnel Name Michael Bumby  
Contact Personnel Email Address mbumby@xortx.com