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Document And Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2021
Mar. 22, 2022
Jun. 30, 2021
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2021    
Document Fiscal Year Focus 2021    
Document Fiscal Period Focus FY    
Trading Symbol TCBC    
Entity Registrant Name TC BANCSHARES, INC.    
Entity Central Index Key 0001850398    
Current Fiscal Year End Date --12-31    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company true    
Entity Ex Transition Period false    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Shell Company false    
Title of 12(b) Security Common Stock, par value $0.01    
Security Exchange Name NASDAQ    
Entity File Number 001-40637    
Entity Incorporation, State or Country Code GA    
Entity Tax Identification Number 86-2650449    
Entity Address, Address Line One 131 South Dawson Street    
Entity Address, City or Town Thomasville    
Entity Address, State or Province GA    
Entity Address, Postal Zip Code 31792    
City Area Code 229    
Local Phone Number 226-3221    
Document Transition Report false    
Entity Common Stock, Shares Outstanding   4,898,350  
Entity Public Float     $ 0
Icfr Auditor Attestation Flag false    
Documents Incorporated by Reference

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the Registrant's definitive proxy statement (the "Proxy Statement") for its 2022 annual meeting of shareholders are incorporated by reference herein into Part III, Items 10 through 14, of this Annual Report.

    
Document Annual Report true    
Auditor Name WIPFLI LLP    
Auditor Location Atlanta, Georgia    
Auditor Firm ID 344