Subsequent Events	12 Months Ended
Dec. 31, 2025
Subsequent Events [Abstract]
Subsequent Events	13. SUBSEQUENT EVENTS Subsequent events after the date of the Consolidated Statements of Assets and Liabilities have been evaluated through the date the consolidated financial statements were issued. Other than the item discussed below, the Company has concluded that there is no impact requiring adjustment or disclosure in the consolidated financial statements. Repayment of the 2026 Notes On January 15, 2026, the Company borrowed $505,000 under the Revolving Credit Facility and used the proceeds, together with cash on hand, to repay the 2026 Notes, plus accrued and unpaid interest, in full satisfaction of its obligations under the 2026 Notes. 2029 Notes On January 28, 2026, the Company closed an offering of $400,000 aggregate principal amount of 5.100% unsecured notes due 2029 (the “2029 Notes”). The 2029 Notes were issued pursuant to an indenture between us and Computershare Trust Company, National Association, as Trustee (as successor to Wells Fargo). The 2029 Notes bear interest at a rate of 5.100% per year, payable semi-annually in arrears on January 28 and July 28 of each year, commencing on July 28, 2026. The 2029 Notes will mature on January 28, 2029 and may be redeemed in whole or in part at the Company's option at any time or from time to time at the redemption prices set forth in the indenture. In connection with the 2029 Notes, the Company entered into an interest rate swap to more closely align the interest rates of the Company’s fixed rate liabilities with the investment portfolio, which predominately consists of floating rate loans. The Company designated this interest rate swap and the 2029 Notes in a qualifying fair value hedging relationship. Distribution On February 25, 2026, the Board of Directors declared a quarterly base distribution of $0.32 per share payable on or about April 28, 2026 to holders of record as of March 31, 2026. In addition, the Board declared a quarterly supplemental distribution of $0.03 per share payable on or about March 20, 2026 to holders of record as of March 9, 2026. Goldman Sachs BDC, Inc. — Tax Information (unaudited) During the year ended December 31, 2025, the Company designated 87.50% of its distributions from net investment income as interest-related dividends pursuant to Section 871(k) of the Internal Revenue Code. During the year ended December 31, 2025, the Company designated 78.44% of the dividends paid from net investment company taxable income as section 163(j) Interest Dividends.

Subsequent Events

12 Months Ended

Dec. 31, 2025

13. SUBSEQUENT EVENTS

Subsequent events after the date of the Consolidated Statements of Assets and Liabilities have been evaluated through the date the consolidated financial statements were issued. Other than the item discussed below, the Company has concluded that there is no impact requiring adjustment or disclosure in the consolidated financial statements.

Repayment of the 2026 Notes

On January 15, 2026, the Company borrowed $505,000 under the Revolving Credit Facility and used the proceeds, together with cash on hand, to repay the 2026 Notes, plus accrued and unpaid interest, in full satisfaction of its obligations under the 2026 Notes.

2029 Notes

On January 28, 2026, the Company closed an offering of $400,000 aggregate principal amount of 5.100% unsecured notes due 2029 (the “2029 Notes”). The 2029 Notes were issued pursuant to an indenture between us and Computershare Trust Company, National Association, as Trustee (as successor to Wells Fargo). The 2029 Notes bear interest at a rate of 5.100% per year, payable semi-annually in arrears on January 28 and July 28 of each year, commencing on July 28, 2026. The 2029 Notes will mature on January 28, 2029 and may be redeemed in whole or in part at the Company's option at any time or from time to time at the redemption prices set forth in the indenture.

In connection with the 2029 Notes, the Company entered into an interest rate swap to more closely align the interest rates of the Company’s fixed rate liabilities with the investment portfolio, which predominately consists of floating rate loans. The Company designated this interest rate swap and the 2029 Notes in a qualifying fair value hedging relationship.

Distribution

On February 25, 2026, the Board of Directors declared a quarterly base distribution of $0.32 per share payable on or about April 28, 2026 to holders of record as of March 31, 2026. In addition, the Board declared a quarterly supplemental distribution of $0.03 per share payable on or about March 20, 2026 to holders of record as of March 9, 2026.

Goldman Sachs BDC, Inc. — Tax Information (unaudited)

During the year ended December 31, 2025, the Company designated 87.50% of its distributions from net investment income as interest-related dividends pursuant to Section 871(k) of the Internal Revenue Code.

During the year ended December 31, 2025, the Company designated 78.44% of the dividends paid from net investment company taxable income as section 163(j) Interest Dividends.