| Cover | Mar. 01, 2023 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Mar. 01, 2023 |
| Entity File Number | 814-00866 |
| Entity Registrant Name | Monroe Capital Corporation |
| Entity Central Index Key | 0001512931 |
| Entity Tax Identification Number | 27-4895840 |
| Entity Incorporation, State or Country Code | MD |
| Entity Address, Address Line One | 311 South Wacker Drive |
| Entity Address, Address Line Two | Suite 6400 |
| Entity Address, City or Town | Chicago |
| Entity Address, State or Province | IL |
| Entity Address, Postal Zip Code | 60606 |
| City Area Code | 312 |
| Local Phone Number | 258-8300 |
| 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 $0.001 per share |
| Trading Symbol | MRCC |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
