During the 2016-17 rabi season, a study on “Management of N levels and time of cut in rabi forage oat (Avena sativa L.)” was conducted at Agronomy Instructional Farm, SDAU, Sardarkrushinagar with twelve treatment combinations comprised of four N levels viz., 80 kg ha^-1 (N₁), 100 kg ha^-1 (N₂), 120 kg ha^-1 (N3) and 140 kg ha^-1 (N4) and three cutting management practices, 45 days after sowing (C1), 55 days after sowing (C2), and 65 days after sowing (C3), were conducted in four replications of a randomised block design (factorial concept). Plant growth, yield and quality characteristics were all significantly increased when the rabi forage oat was fertilised with 140 kg nitrogen ha^-1. Cutting at 65 days after sowing resulted in significantly higher growth attributes and nitrogen uptake, and crude fibre content. Fertilizing rabi forage oat with 140 kg nitrogen ha^-1 and 65 days after sowing cutting can result in higher green forage yield, net monetization and benefit cost ratio.