v3.25.1
Document and Entity Information - shares
 3 Months Ended
Mar. 31, 2025
May 02, 2025
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2025  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q1  
Current Fiscal Year End Date --12-31  
Document Quarterly Report true  
Document Transition Report false  
Entity Registrant Name Paymentus Holdings, Inc.  
Entity Central Index Key 0001841156  
Entity File Number 001-40429  
Entity Tax Identification Number 45-3188251  
Entity Incorporation, State or Country Code DE  
Entity Address, Address Line One 11605 North Community House Road  
Entity Address Address Line2 Suite 300  
Entity Address, City or Town Charlotte  
Entity Address, State or Province NC  
Entity Address, Postal Zip Code 28277  
City Area Code 888  
Local Phone Number 440-4826  
Title of 12(b) Security Class A Common Stock, par value $0.0001 per share  
Trading Symbol PAY  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company false  
Common Class A [Member]    
Document Information [Line Items]    
Entity Common Stock Shares Outstanding   35,178,073
Common Class B [Member]    
Document Information [Line Items]    
Entity Common Stock Shares Outstanding   89,954,158