"Barcoo" was deployed again to New Guinea in late March 1945, and in April was assigned to United States Navy Task Force 78.1 to support the Borneo campaign. For the Tarakan landings on 1 May, "Barcoo" was designated as the ship in charge of the landing craft tank division of the assault force. "Barcoo" was also involved in the North Borneo landings in June, then was assigned to general escort and fire support duties for the rest of the campaign. The frigate fired in anger for the last time on 3 August 1945, during a bombardment of the village of Soengaipaten in Borneo.