Rice straw is a byproduct of rice cultivation, of which a considerable amount is burnt in India and other countries, causing environmental pollution and climate change by releasing greenhouse gases such as CO2, N2O, CH4, NOX, and CO into the atmosphere. The aim of this study was to recycle this huge amount of agricultural biomass by degrading it through microbial inoculants The present study consists of four treatments, rice straw (S), rice straw + water (SW), rice straw + water + Pusa decomposer (SF), and rice straw + water + TNAU biomineralizer (SB). Results of this study showed the accelerated decomposition process in microbial treated rice straw compared to rice straw + water (SW) and untreated rice straw (S). The distorted, rough, and porous surface structure of SEM micrograph in treatments SF and SB confirmed the ability of both the microbial consortia to decompose rice straw faster than in rice straw + water (SW) and untreated rice straw (S). EDAX spectra of elemental composition reported the carbon content in order of 33.66%, 29.75%, 13.33%, and 20.65% w/w of rice straw in S, SW, SF, and SB treatments respectively. The highest nitrogen content (0.64%) w/w of rice straw was reported in SF treatment and was followed by SB (0.61%) w/w, SW (0.45%) w/w, and S (0.43%) w/w of rice straw. Treatment SF and SB registered lower C/N ratios of 20.83 and 33.85 respectively compared to SW (66.11) and S (78.28) treatments.