The invention is a tiltable bracket assembly for a rain gutter of a building, the assembly including an elongate clip configured to engage with an edge of the rain gutter; and a support bracket, wherein the support bracket includes a vertical element and a horizontal element, wherein the horizontal element including a hinged flap for a base of the rain gutter; characterized in that the vertical element of the support bracket includes a track for the elongate clip, and wherein the horizontal element of the support bracket includes a slot for the elongate clip. The elongate clip is configured to slide along the vertical element of the support bracket to engage and disengage with the upper rear edge of the rain gutter. When disengaged, the flap can be articulated to facilitate the pivotal movement of the rain gutter. This allows the gutter to be easily emptied or cleared of leaves or snow of the like as required.