A split-plot field experiment was conducted in kharif 2025 at ICAR-KVK, Kalaburagi-II, Karnataka, to determine how three sulphur sources (gypsum, bentonite sulphur, elemental sulphur) and four levels (0, 10, 20, 30 kg S ha-1) influence N, P, K and S uptake and the economics of maize (Zea mays L.) hybrid RCRMH-2) on a sulphur-deficient calcareous Vertisol. Bentonite sulphur gave significantly higher total N uptake (104.69 kg ha-1) than gypsum (80.88), with elemental sulphur intermediate (91.32) P, K and S uptake followed the same order. Uptake of all four nutrients increased significantly with sulphur level, peaking at 30 kg S ha-1 (N 122.63, P 33.75, K 128.89, S 20.19 kg ha-1) and falling to about 43-60 per cent of these values in the control. The interaction was non-significant except for K uptake in straw and total. Bentonite sulphur at 30 kg S ha-1 (S2L3) gave the highest uptake of every nutrient (137.25 N, 37.80 P, 146.93 K, 23.21 S kg ha-1), while gypsum with no sulphur (S1L4) gave the lowest (47.78, 11.66, 30.05, 7.24). Bentonite sulphur recorded the highest net profit (₹1,05,048 ha-1) and benefit:cost ratio (2.60) among sources, and 30 kg S ha-1 among levels (₹1,15,325 ha-1, 2.72), against ₹55,965 ha-1 and 1.74 in the control. The best combination, bentonite sulphur at 30 kg S ha-1, returned ₹1,70,000 gross, ₹1,27,298 net and a B:C ratio of 3.98. It is therefore recommended as the most nutrient-efficient and remunerative practice for maize on calcareous Vertisols.