| Document and Entity Information | May 17, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | May 17, 2024 |
| Entity Registrant Name | TC BANCSHARES, INC. |
| Entity Central Index Key | 0001850398 |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Entity File Number | 001-40637 |
| 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 |
| Entity Incorporation, State or Country Code | GA |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, par value $0.01 |
| Trading Symbol | TCBC |
| Security Exchange Name | NASDAQ |
