A field experiment was conducted during rabi seasons of 2015–16 and 2016–17 to study the effect of P, S and biofertilizers on growth, yield and quality of lentil cv. PL-5. Plant height, branches/plant, pods/plant, grains/pod, 1000-grain weight, seed weight/plant and grain yield were maximum at 60 kg P2O5/ha, 30 kg S/ha and seed inoculation with Rhizobium+PSB biofertilizers. Similar was the case with grain protein, protein yield and net returns. The additional net returns due to P60, S30 and Rhizobium+PSB were Rs. 8689, 2643 and 3237/ha, respectively, over their respective controls. The combined influence of these inputs augmented the yield and net returns of lentil over their separate effects.