v3.26.1
Document and Entity Information - shares
 3 Months Ended
Mar. 31, 2026
May 11, 2026
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Mar. 31, 2026  
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2026  
Entity Registrant Name John Hancock Comvest Private Income Fund  
Entity Central Index Key 0001987221  
Entity File Number 814-01669  
Entity Tax Identification Number 93-4109571  
Entity Incorporation, State or Country Code DE  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Shell Company false  
Entity Filer Category Non-accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Address, Address Line One 360 S Rosemary Avenue  
Entity Address, Address Line Two Suite 1700  
Entity Address, State or Province FL  
Entity Address, City or Town West Palm Beach  
Entity Address, Postal Zip Code 33401  
City Area Code 561  
Local Phone Number 727-2001  
Entity Common Stock, Shares Outstanding   18,631,636
Entity Interactive Data Current Yes